The document contains questions about electronics topics such as resistors, capacitors, transistors, diodes, transformers, circuits, and Kirchhoff's laws. It tests knowledge of components, circuit analysis, and principles of electricity. Multiple choice questions cover topics like component identification, circuit calculations, applications of devices, and explanations of electrical concepts.
The document is a practice test for electronics containing 65 multiple choice questions. It covers topics such as basic electronic components like resistors, capacitors, diodes, transistors; circuits; electricity; electronics; transformers; and applications of electronics. The questions test knowledge of properties of components, how components function in circuits, Kirchhoff's laws, and concepts in electricity and electronics. An answer key is provided at the end to check responses.
The document contains 40 multiple choice questions related to basic electrical engineering concepts for DMRC JE/SSC JE/CIL MT exams. The questions cover topics like conventional vs electron flow, series resonance, quality factor, power factor, RLC circuits, capacitors, inductors, Kirchhoff's laws, and more. Key terms that appear frequently include resistance, reactance, impedance, capacitance, inductance, and resonance. The questions are designed to test understanding of fundamental electrical concepts.
ANURAG TYAGI CLASSES (ATC) is an organisation destined to orient students into correct path to achieve
success in IIT-JEE, AIEEE, PMT, CBSE & ICSE board classes. The organisation is run by a competitive staff comprising of Ex-IITians. Our goal at ATC is to create an environment that inspires students to recognise and explore their own potentials and build up confidence in themselves.ATC was founded by Mr. ANURAG TYAGI on 19 march, 2001.
MEET US AT:
www.anuragtyagiclasses.com
This document contains a technical assessment with 82 multiple choice questions covering topics in electronics and semiconductor devices. The questions assess knowledge of key concepts like resistivity of materials like silicon and germanium, properties of intrinsic and doped semiconductors, diode characteristics, transistor operation, digital circuits, color television systems, communication systems, and operational amplifiers.
This document discusses electric circuits and Ohm's law. It provides examples of calculating current, resistance, voltage, and power in both series and parallel circuits. Key points covered include:
- Ohm's law defines the relationship between voltage, current, and resistance in a circuit.
- Components in series experience the same current but their voltages add up. The total resistance is the sum of the individual resistances.
- Components in parallel experience the same voltage but their currents combine. The total resistance is lower than any individual resistance.
- Power is calculated as the product of voltage and current, and describes how much energy is used by components in a circuit.
1. The document provides definitions and explanations of key electrical concepts such as current, potential difference, resistance, Ohm's law, and Kirchhoff's laws.
2. It examines factors that influence physical quantities like resistance, resistivity, and conductivity. Resistance depends on length, cross-sectional area, material, and temperature.
3. The document compares how resistances connected in series differ from those connected in parallel, and provides equations for calculating equivalent or total resistance in each case.
The document is a practice test for electronics containing 65 multiple choice questions. It covers topics such as basic electronic components like resistors, capacitors, diodes, transistors; circuits; electricity; electronics; transformers; and applications of electronics. The questions test knowledge of properties of components, how components function in circuits, Kirchhoff's laws, and concepts in electricity and electronics. An answer key is provided at the end to check responses.
The document contains 40 multiple choice questions related to basic electrical engineering concepts for DMRC JE/SSC JE/CIL MT exams. The questions cover topics like conventional vs electron flow, series resonance, quality factor, power factor, RLC circuits, capacitors, inductors, Kirchhoff's laws, and more. Key terms that appear frequently include resistance, reactance, impedance, capacitance, inductance, and resonance. The questions are designed to test understanding of fundamental electrical concepts.
ANURAG TYAGI CLASSES (ATC) is an organisation destined to orient students into correct path to achieve
success in IIT-JEE, AIEEE, PMT, CBSE & ICSE board classes. The organisation is run by a competitive staff comprising of Ex-IITians. Our goal at ATC is to create an environment that inspires students to recognise and explore their own potentials and build up confidence in themselves.ATC was founded by Mr. ANURAG TYAGI on 19 march, 2001.
MEET US AT:
www.anuragtyagiclasses.com
This document contains a technical assessment with 82 multiple choice questions covering topics in electronics and semiconductor devices. The questions assess knowledge of key concepts like resistivity of materials like silicon and germanium, properties of intrinsic and doped semiconductors, diode characteristics, transistor operation, digital circuits, color television systems, communication systems, and operational amplifiers.
This document discusses electric circuits and Ohm's law. It provides examples of calculating current, resistance, voltage, and power in both series and parallel circuits. Key points covered include:
- Ohm's law defines the relationship between voltage, current, and resistance in a circuit.
- Components in series experience the same current but their voltages add up. The total resistance is the sum of the individual resistances.
- Components in parallel experience the same voltage but their currents combine. The total resistance is lower than any individual resistance.
- Power is calculated as the product of voltage and current, and describes how much energy is used by components in a circuit.
1. The document provides definitions and explanations of key electrical concepts such as current, potential difference, resistance, Ohm's law, and Kirchhoff's laws.
2. It examines factors that influence physical quantities like resistance, resistivity, and conductivity. Resistance depends on length, cross-sectional area, material, and temperature.
3. The document compares how resistances connected in series differ from those connected in parallel, and provides equations for calculating equivalent or total resistance in each case.
Chapter 8 Modern Electronics (Physics revision)Ahmed Hekal
The document defines key terms related to modern electronics including semiconductors, crystals, holes, doping, p-type and n-type semiconductors. It describes diodes, transistors, analog and digital electronics. It provides examples of usages such as rectifiers, amplifiers, switches, converters. It compares properties of n-type and p-type crystals and diagrams are included to illustrate relationships. Logic gates such as NOT, AND, OR are defined with their equivalent circuits and truth tables.
The document discusses transistor modeling for small-signal analysis. It introduces two common transistor models - the hybrid equivalent model and the re model. The re model represents the transistor with a diode and controlled current source. Important small-signal parameters for analysis are also defined, including input impedance Zi, output impedance Zo, voltage gain Av, and current gain Ai. The phase relationship between input and output signals is also addressed.
This document provides an overview of Chapter 2 on Direct Current (DC) Circuits from the course BEKG 1123 Principles of Electric and Electronics. The chapter covers DC sources, Ohm's law, power and energy, resistors, capacitors, inductors, and circuit analysis techniques including Kirchhoff's laws, series and parallel circuits, and node/mesh analysis. The key topics include defining DC circuits, calculating current, voltage, resistance, conductance and power using Ohm's law, the characteristics and functions of resistors, capacitors and inductors, and analyzing electrical circuits.
This document provides an overview of basic electronics components and circuits. It begins with an introduction to passive components like resistors, capacitors, inductors, and transformers. It then covers analog circuits using transistors and operational amplifiers. The document provides details on circuit analysis and different types of filters. It explains concepts like resistors, capacitors, inductors, diodes, transistors, and operational amplifiers. Examples of common circuits are also presented like voltage dividers, rectifiers, and amplifiers.
Internal Resistance, EMF and Oscilloscopes.pptmrmeredith
The document discusses internal resistance of batteries, electromotive force (EMF), and using an oscilloscope to measure voltage and frequency. It explains that batteries have internal resistance that causes voltage to drop as current increases. EMF is defined as the voltage produced without any current flow. An oscilloscope can be used to measure the voltage and frequency of alternating current (AC) signals. Examples are given of measuring battery parameters and mains voltage.
Semiconductor
If a valence Electron acquires sufficient kinetic energy to break its covalent bond and fills the void created by a hole then a vacancy, or hole will be created in the covalent bond that released the electron
Hence there is a transfer of holes to the left and electrons to the right
This document provides an overview of key concepts in electric circuits including:
1. An electric circuit connects an energy source to an energy consuming device through conducting wires that allow electric charges to move. Electromotive force drives current, measured in amperes, through a circuit.
2. Ohm's law defines the relationship between voltage, current, and resistance. Resistance depends on the material's resistivity and dimensions. Components like resistors control current in circuits.
3. Electric power, measured in watts, is calculated by multiplying voltage by current. This relates to the energy delivered by a circuit over time for devices that function as resistors.
1. The document discusses the V-I characteristics of a p-n junction diode and describes its behavior under zero external voltage, forward bias, and reverse bias.
2. Rectifiers are introduced as circuits that convert AC to DC. Half-wave and full-wave rectifiers are described, including their circuit arrangements and operations. Centre-tap and bridge configurations are covered for full-wave rectification.
3. Zener diodes are discussed as properly doped diodes with a sharp breakdown voltage. They are always connected in reverse bias and have a defined zener voltage.
PN junction diode –structure, operation and V-I characteristics, diffusion and transient capacitance - Rectifiers – Half Wave and Full Wave Rectifier,– Display devices- LED, Laser diodes- Zener diodecharacteristics-Zener Reverse characteristics – Zener as regulator,TRANSISTORS, BJT, JFET, MOSFET- structure, operation, characteristics and Biasing UJT, Thyristor and IGBT Structure and characteristics,BJT small signal model – Analysis of CE, CB, CC amplifiers- Gain and frequency response –
MOSFET small signal model– Analysis of CS and Source follower – Gain and frequency response- High frequency analysis,BIMOS cascade amplifier, Differential amplifier – Common mode and Difference mode analysis – FET input stages – Single tuned amplifiers – Gain and frequency response – Neutralization methods, power amplifiers –Types (Qualitative analysis),Advantages of negative feedback – voltage / current, series , Shunt feedback –positive feedback – Condition for oscillations, phase shift – Wien bridge, Hartley, Colpitts and Crystal oscillators.
1. Cells connected in series have their emfs add up but their currents remain equal. Cells in parallel have the same emf but their currents divide.
2. The internal resistance of cells in series adds up while the reciprocal of the internal resistance adds up for parallel cells.
3. A mixed grouping of cells has some cells in series forming rows, and the rows in parallel. The total resistance is minimized when the rows' resistance equals the series resistance within rows.
BJT small signal model – Analysis of CE, CB, CC amplifiers- Gain and frequency response – MOSFET small signal model– Analysis of CS and Source follower – Gain and frequency response- High frequency analysis.
The document defines electromotive force (e.m.f) as the work done by a source to drive one coulomb of charge around a complete circuit. It states that the e.m.f of a cell or battery refers to the electrical energy produced for each coulomb that passes through it. However, the potential difference, or voltage, across the external terminals is usually lower than the e.m.f due to the internal resistance of the cell or battery, which causes a drop in potential and some of the energy to be lost as heat. The relationship between e.m.f, potential difference, current, and internal resistance is explained.
This document contains a sample physics question paper for Class 12 with 26 questions across 5 sections (A-E). It provides general instructions, details of questions in each section, and values of important physical constants. Section A contains 5 one-mark questions, Section B has 5 two-mark questions, Section C has 12 three-mark questions, Section D has 1 four-mark question and Section E contains 3 five-mark questions. The document tests students' understanding of concepts in electricity, magnetism, electromagnetic waves, optics, modern physics and electronics.
Transistors are semiconductor devices that amplify and switch electronic signals. They have three terminals - emitter, base, and collector - and were invented in 1947. Transistors replaced vacuum tubes and allowed for the development of modern computers and electronics. They work by using a small current or voltage applied to the base to control a larger current flowing from collector to emitter. Integrated circuits now contain millions of transistors on a single microchip.
Analog circuits-lab-possible-viva-questionspadmajasiva
The document provides model questions for an analog circuits lab experiment on diode characteristics. It includes:
1. Experiment questions on obtaining the forward bias VI characteristics of a given diode to determine if it is made of Germanium or Silicon based on its cut-in voltage.
2. 20 review questions covering topics like semiconductors, intrinsic and extrinsic semiconductors, P-type and N-type materials, doping, drift current, diffusion current, and PN junctions.
3. A second experiment on obtaining the reverse characteristics of a zener diode to determine its breakdown voltage, along with 5 related review questions.
4. Review questions cover the characteristics and applications of breakdown di
This document provides definitions and explanations of basic electronics concepts. It discusses conductors, semiconductors, and insulators. It also defines the atom as the basic unit of matter, and describes the parts of an atom including protons, neutrons, electrons, and quarks. Additional concepts covered include voltage, current, direct and alternating current, resistors, diodes, transistors, capacitors, transformers, inductors, LEDs, solar cells, switches, magnetic flux, and logic gates. Boolean equations are also introduced.
Exam 387017RR - Resonant CircuitsWhen you have completed .docxSANSKAR20
Exam: 387017RR - Resonant Circuits
When you have completed your exam and reviewed your answers, click Submit Exam. Answers will not be recorded until you
hit Submit Exam. If you need to exit before completing the exam, click Cancel Exam.
Questions 1 to 20: Select the best answer to each question. Note that a question and its answers may be split across a page
break, so be sure that you have seen the entire question and all the answers before choosing an answer.
1. In the circuit shown, if the value of the reactive component was increased, how would it change the
waveforms?
A. The phase shift between the current and the voltage would increase.
B. The phase shift between the current and the voltage would reverse.
C. The phase shift between the current and the voltage would decrease.
D. The phase shift between the current and the voltage would remain the same.
2. Look at the phasor diagram and the circuit shown. The diagram shows the impedances for the
components in the circuit. What is the total impedance of the circuit?
Voltage
R = 300n
(A) (B)
A. 85 a
B. 500 £2
C.100O
D. 50 a
A-
100V
B
100V^
100V
D
3. In the circuit above, if you placed meter leads between points A and D, what voltage would you
measure?
A.300 V
B. 100 V
C.0V
0. 141 V
4. A parallel-tuned circuit is found to have insufficient bandwidth. You can increase the bandwidth of the
circuit by
A. increasing circuit resistance.
B. using the conjugate impedance.
C. adding resistance in parallel.
D. increasing the £"2.
5. Look at this graph of current and voltage phase relationships. The circuit that produces the illustrated
current and voltage phase relationships would be
A. inductive with some resistance.
B. purely inductive.
C. purely capacitive.
D. capacitive with some resistance.
B. 1.5.
C. 30.3.
D. 45.5.
Circuits Circuit 4
7. Look at the four circuit diagrams shown. Technician A says that Circuit 3 is a low-pass circuit, and that
Circuit 4 is a high-pass circuit. Technician B says that Circuit 1 is a band-pass circuit, and that Circuit 2 is a
band-reject circuit. Which of the following statements is correct?
A. Both technicians are correct.
B. Only Technician A is correct.
C. Only Technician B is correct.
D. Neither of the two technicians is correct.
Curve 1 Curve 2
8. Two electronics technicians are looking at the characteristic curves shown. Technician A say that Curve
1 is the curve for a low-pass circuit, and that Curve 2 is the curve for a high-pass circuit. Technician B says
that Curve 3 is the curve for a band-pass circuit, and that Curve 4 is the curve for a band-reject circuit.
Which of the following statements is correct?
A. Both technicians are correct.
B. Only Technician B is correct.
C. Neither of the two technicians is correct.
D. Only Technician A is correct.
A
100V
B
100V
c
100V
D—
Voltage
Voltage
Voltage
Current
Current
Waveform 3 Waveform 4
9. In the circuit shown, the generator Irequency is raised ...
The document summarizes key concepts about electrical quantities including current, resistance, voltage, power and energy. It defines current as the flow of electric charge and explains that current is measured using an ammeter. Resistance is defined as the ratio of voltage to current and depends on the length and cross-sectional area of a conductor. Voltage or potential difference is the work required to move a unit charge between two points and is measured using a voltmeter. Power is the rate at which electrical energy is transferred and is calculated by multiplying current and voltage. Energy is calculated by multiplying power by time.
This document appears to be an electricity exam for a high school class. It contains 30 multiple choice questions testing knowledge of electrical concepts like current, resistance, voltage, circuits. It also has sections asking students to draw schematic symbols and diagrams of basic circuit connections like lamps, batteries, switches wired in series and parallel. The exam covers core topics in electricity and tests understanding of both concepts and representation of basic circuits.
1. Electricity and electrical energy can both be generated.
2. The phenomenon where a circuit stores electrical energy is called capacitance.
3. A general term for material and devices used as part of an electrical installation includes utilization equipment.
Chapter 8 Modern Electronics (Physics revision)Ahmed Hekal
The document defines key terms related to modern electronics including semiconductors, crystals, holes, doping, p-type and n-type semiconductors. It describes diodes, transistors, analog and digital electronics. It provides examples of usages such as rectifiers, amplifiers, switches, converters. It compares properties of n-type and p-type crystals and diagrams are included to illustrate relationships. Logic gates such as NOT, AND, OR are defined with their equivalent circuits and truth tables.
The document discusses transistor modeling for small-signal analysis. It introduces two common transistor models - the hybrid equivalent model and the re model. The re model represents the transistor with a diode and controlled current source. Important small-signal parameters for analysis are also defined, including input impedance Zi, output impedance Zo, voltage gain Av, and current gain Ai. The phase relationship between input and output signals is also addressed.
This document provides an overview of Chapter 2 on Direct Current (DC) Circuits from the course BEKG 1123 Principles of Electric and Electronics. The chapter covers DC sources, Ohm's law, power and energy, resistors, capacitors, inductors, and circuit analysis techniques including Kirchhoff's laws, series and parallel circuits, and node/mesh analysis. The key topics include defining DC circuits, calculating current, voltage, resistance, conductance and power using Ohm's law, the characteristics and functions of resistors, capacitors and inductors, and analyzing electrical circuits.
This document provides an overview of basic electronics components and circuits. It begins with an introduction to passive components like resistors, capacitors, inductors, and transformers. It then covers analog circuits using transistors and operational amplifiers. The document provides details on circuit analysis and different types of filters. It explains concepts like resistors, capacitors, inductors, diodes, transistors, and operational amplifiers. Examples of common circuits are also presented like voltage dividers, rectifiers, and amplifiers.
Internal Resistance, EMF and Oscilloscopes.pptmrmeredith
The document discusses internal resistance of batteries, electromotive force (EMF), and using an oscilloscope to measure voltage and frequency. It explains that batteries have internal resistance that causes voltage to drop as current increases. EMF is defined as the voltage produced without any current flow. An oscilloscope can be used to measure the voltage and frequency of alternating current (AC) signals. Examples are given of measuring battery parameters and mains voltage.
Semiconductor
If a valence Electron acquires sufficient kinetic energy to break its covalent bond and fills the void created by a hole then a vacancy, or hole will be created in the covalent bond that released the electron
Hence there is a transfer of holes to the left and electrons to the right
This document provides an overview of key concepts in electric circuits including:
1. An electric circuit connects an energy source to an energy consuming device through conducting wires that allow electric charges to move. Electromotive force drives current, measured in amperes, through a circuit.
2. Ohm's law defines the relationship between voltage, current, and resistance. Resistance depends on the material's resistivity and dimensions. Components like resistors control current in circuits.
3. Electric power, measured in watts, is calculated by multiplying voltage by current. This relates to the energy delivered by a circuit over time for devices that function as resistors.
1. The document discusses the V-I characteristics of a p-n junction diode and describes its behavior under zero external voltage, forward bias, and reverse bias.
2. Rectifiers are introduced as circuits that convert AC to DC. Half-wave and full-wave rectifiers are described, including their circuit arrangements and operations. Centre-tap and bridge configurations are covered for full-wave rectification.
3. Zener diodes are discussed as properly doped diodes with a sharp breakdown voltage. They are always connected in reverse bias and have a defined zener voltage.
PN junction diode –structure, operation and V-I characteristics, diffusion and transient capacitance - Rectifiers – Half Wave and Full Wave Rectifier,– Display devices- LED, Laser diodes- Zener diodecharacteristics-Zener Reverse characteristics – Zener as regulator,TRANSISTORS, BJT, JFET, MOSFET- structure, operation, characteristics and Biasing UJT, Thyristor and IGBT Structure and characteristics,BJT small signal model – Analysis of CE, CB, CC amplifiers- Gain and frequency response –
MOSFET small signal model– Analysis of CS and Source follower – Gain and frequency response- High frequency analysis,BIMOS cascade amplifier, Differential amplifier – Common mode and Difference mode analysis – FET input stages – Single tuned amplifiers – Gain and frequency response – Neutralization methods, power amplifiers –Types (Qualitative analysis),Advantages of negative feedback – voltage / current, series , Shunt feedback –positive feedback – Condition for oscillations, phase shift – Wien bridge, Hartley, Colpitts and Crystal oscillators.
1. Cells connected in series have their emfs add up but their currents remain equal. Cells in parallel have the same emf but their currents divide.
2. The internal resistance of cells in series adds up while the reciprocal of the internal resistance adds up for parallel cells.
3. A mixed grouping of cells has some cells in series forming rows, and the rows in parallel. The total resistance is minimized when the rows' resistance equals the series resistance within rows.
BJT small signal model – Analysis of CE, CB, CC amplifiers- Gain and frequency response – MOSFET small signal model– Analysis of CS and Source follower – Gain and frequency response- High frequency analysis.
The document defines electromotive force (e.m.f) as the work done by a source to drive one coulomb of charge around a complete circuit. It states that the e.m.f of a cell or battery refers to the electrical energy produced for each coulomb that passes through it. However, the potential difference, or voltage, across the external terminals is usually lower than the e.m.f due to the internal resistance of the cell or battery, which causes a drop in potential and some of the energy to be lost as heat. The relationship between e.m.f, potential difference, current, and internal resistance is explained.
This document contains a sample physics question paper for Class 12 with 26 questions across 5 sections (A-E). It provides general instructions, details of questions in each section, and values of important physical constants. Section A contains 5 one-mark questions, Section B has 5 two-mark questions, Section C has 12 three-mark questions, Section D has 1 four-mark question and Section E contains 3 five-mark questions. The document tests students' understanding of concepts in electricity, magnetism, electromagnetic waves, optics, modern physics and electronics.
Transistors are semiconductor devices that amplify and switch electronic signals. They have three terminals - emitter, base, and collector - and were invented in 1947. Transistors replaced vacuum tubes and allowed for the development of modern computers and electronics. They work by using a small current or voltage applied to the base to control a larger current flowing from collector to emitter. Integrated circuits now contain millions of transistors on a single microchip.
Analog circuits-lab-possible-viva-questionspadmajasiva
The document provides model questions for an analog circuits lab experiment on diode characteristics. It includes:
1. Experiment questions on obtaining the forward bias VI characteristics of a given diode to determine if it is made of Germanium or Silicon based on its cut-in voltage.
2. 20 review questions covering topics like semiconductors, intrinsic and extrinsic semiconductors, P-type and N-type materials, doping, drift current, diffusion current, and PN junctions.
3. A second experiment on obtaining the reverse characteristics of a zener diode to determine its breakdown voltage, along with 5 related review questions.
4. Review questions cover the characteristics and applications of breakdown di
This document provides definitions and explanations of basic electronics concepts. It discusses conductors, semiconductors, and insulators. It also defines the atom as the basic unit of matter, and describes the parts of an atom including protons, neutrons, electrons, and quarks. Additional concepts covered include voltage, current, direct and alternating current, resistors, diodes, transistors, capacitors, transformers, inductors, LEDs, solar cells, switches, magnetic flux, and logic gates. Boolean equations are also introduced.
Exam 387017RR - Resonant CircuitsWhen you have completed .docxSANSKAR20
Exam: 387017RR - Resonant Circuits
When you have completed your exam and reviewed your answers, click Submit Exam. Answers will not be recorded until you
hit Submit Exam. If you need to exit before completing the exam, click Cancel Exam.
Questions 1 to 20: Select the best answer to each question. Note that a question and its answers may be split across a page
break, so be sure that you have seen the entire question and all the answers before choosing an answer.
1. In the circuit shown, if the value of the reactive component was increased, how would it change the
waveforms?
A. The phase shift between the current and the voltage would increase.
B. The phase shift between the current and the voltage would reverse.
C. The phase shift between the current and the voltage would decrease.
D. The phase shift between the current and the voltage would remain the same.
2. Look at the phasor diagram and the circuit shown. The diagram shows the impedances for the
components in the circuit. What is the total impedance of the circuit?
Voltage
R = 300n
(A) (B)
A. 85 a
B. 500 £2
C.100O
D. 50 a
A-
100V
B
100V^
100V
D
3. In the circuit above, if you placed meter leads between points A and D, what voltage would you
measure?
A.300 V
B. 100 V
C.0V
0. 141 V
4. A parallel-tuned circuit is found to have insufficient bandwidth. You can increase the bandwidth of the
circuit by
A. increasing circuit resistance.
B. using the conjugate impedance.
C. adding resistance in parallel.
D. increasing the £"2.
5. Look at this graph of current and voltage phase relationships. The circuit that produces the illustrated
current and voltage phase relationships would be
A. inductive with some resistance.
B. purely inductive.
C. purely capacitive.
D. capacitive with some resistance.
B. 1.5.
C. 30.3.
D. 45.5.
Circuits Circuit 4
7. Look at the four circuit diagrams shown. Technician A says that Circuit 3 is a low-pass circuit, and that
Circuit 4 is a high-pass circuit. Technician B says that Circuit 1 is a band-pass circuit, and that Circuit 2 is a
band-reject circuit. Which of the following statements is correct?
A. Both technicians are correct.
B. Only Technician A is correct.
C. Only Technician B is correct.
D. Neither of the two technicians is correct.
Curve 1 Curve 2
8. Two electronics technicians are looking at the characteristic curves shown. Technician A say that Curve
1 is the curve for a low-pass circuit, and that Curve 2 is the curve for a high-pass circuit. Technician B says
that Curve 3 is the curve for a band-pass circuit, and that Curve 4 is the curve for a band-reject circuit.
Which of the following statements is correct?
A. Both technicians are correct.
B. Only Technician B is correct.
C. Neither of the two technicians is correct.
D. Only Technician A is correct.
A
100V
B
100V
c
100V
D—
Voltage
Voltage
Voltage
Current
Current
Waveform 3 Waveform 4
9. In the circuit shown, the generator Irequency is raised ...
The document summarizes key concepts about electrical quantities including current, resistance, voltage, power and energy. It defines current as the flow of electric charge and explains that current is measured using an ammeter. Resistance is defined as the ratio of voltage to current and depends on the length and cross-sectional area of a conductor. Voltage or potential difference is the work required to move a unit charge between two points and is measured using a voltmeter. Power is the rate at which electrical energy is transferred and is calculated by multiplying current and voltage. Energy is calculated by multiplying power by time.
This document appears to be an electricity exam for a high school class. It contains 30 multiple choice questions testing knowledge of electrical concepts like current, resistance, voltage, circuits. It also has sections asking students to draw schematic symbols and diagrams of basic circuit connections like lamps, batteries, switches wired in series and parallel. The exam covers core topics in electricity and tests understanding of both concepts and representation of basic circuits.
1. Electricity and electrical energy can both be generated.
2. The phenomenon where a circuit stores electrical energy is called capacitance.
3. A general term for material and devices used as part of an electrical installation includes utilization equipment.
This document discusses electronic components and materials, focusing on resistors and capacitors. It provides information on:
- The basic functions and types of resistors, including fixed resistors like carbon and metal film, as well as variable resistors. It describes how to read resistor color codes and calculate resistance values.
- The basic principle of how capacitors store and discharge electric charge based on capacitance, voltage, and dielectric material. It gives the equations for calculating capacitance and energy storage.
- Common capacitor types including mica, ceramic, electrolytic, and variable capacitors. It explains how capacitance depends on plate area, distance, and dielectric constant.
The document summarizes key concepts about electric circuits, including:
- An electric circuit connects an energy source to a device using conducting wires for electric charge to flow. Current is the rate of charge flow.
- Ohm's law defines the relationship between voltage, current, and resistance in a circuit. Resistance depends on the material's resistivity, length, and cross-sectional area.
- Power in a circuit is defined as the product of voltage and current. It describes the rate at which energy is transferred by the electric current.
- Circuits can have components connected in series, parallel, or a combination. Kirchhoff's laws describe the analysis of current and voltage in such circuits.
This document discusses circuits, current, potential difference, and problem solving. It begins by defining an electric circuit and its key components. It then explains that in a series circuit, the current at every point is the same and the sum of the potential differences equals the total potential difference across the whole circuit. In a parallel circuit, the current from the source equals the sum of currents in the branches, and the potential differences across branches are the same. Several example problems are given to calculate current, potential difference, resistance, and other circuit properties for series and parallel circuits.
This document contains 20 multiple choice questions about electrotherapy and electrical engineering concepts. The questions cover topics like the origin of electric current, static electricity generation, semiconductor properties, heat transfer mechanisms, transformer types, rectifier circuits, and vacuum tube amplifier operation.
The document contains 51 multiple choice questions about integrated electronics and operational amplifiers. It is a quiz created by Prof. Hitesh Dholakiya to test knowledge of integrated circuits, their applications and characteristics. The questions cover topics like the invention of the integrated circuit, op-amp configurations, integrated circuit packaging and testing specifications. The document promotes an Android app and YouTube playlist by the author on VLSI and engineering fundamentals.
“Microcontroller Based Substation Monitoring system with gsm modem”.Priya Rachakonda
• The system is used for transmitting the message to predefined number about the
status of electrical parameters such as voltage, current, temperature etc., to improve
the quality of power.
• Studied about the protection, monitoring and control of a power system.
Here are the key steps to solve series-parallel circuits:
1) Identify series and parallel sections
2) Use series/parallel rules within each section
3) Connect the sections using KVL and KCL
Let me know if any part of the process is unclear! Solving complex circuits takes practice.
Exam 086044RR - Modulation and Detection CircuitsWhen you.docxSANSKAR20
Exam: 086044RR - Modulation and Detection Circuits
When you have completed your exam and reviewed your answers, click Submit Exam. Answers will not be recorded until you
hit Submit Exam. If you need to exit before completing the exam, click Cancel Exam.
Questions 1 to 25: Select the best answer to each question. Note that a question and its answers may be split across a page
break, so be sure that you have seen the entire question and all the answers before choosing an answer.
R
MAA/V—
f =600 kHz
C -0.000352
L =200 £iH
R=101A
1. Look at the circuit shown in the figure above. The frequency of the power supply is 600 kHz, the
capacitance of C is 0.000352 jiF the inductance of L is 200 |aH, and the resistance of R is 10 Q. What
would be the calculated effective resistance (RJ of this circuit?
A. 56,818 fi
B. 52,119 Q
C. 10,461 n
D. 43,167 n
2. An unmodulated carrier has an amplitude of 5 V. When modulated, the maximum amplitude is 10 V.
What is the modulation percentage?
A. 50 percent
B. 120 percent
C. 30 percent
D. 100 percent
3. In a standard AM transmission with 100 percent modulation,
A. the sideband amplitude is 70.7 percent of the carrier amplitude.
B. the sideband amplitude is one-eighth of the carrier amplitude.
C. the sideband amplitude is one-fourth of the carrier amplitude.
D. the sideband amplitude is 50 percent of the carrier amplitude.
^A/Wsr-
f =600 kHz
C =0,000352 fiF
L=20QmH
R=ioy?
4. For the circuit shown in the figure above, what would be the calculated value of the inductive reactance
(Xj)? (Round your answer to the nearest whole number.)
A. 942 D.
B. 1,057 a
C. 754 a
D. 598 a
5. A 1.5 MHz carrier frequency is amplitude-modulated by a 200 kHz sinewave audio signal. The
bandwidth would be
A. 4,000 kHz.
B. 400 kHz.
C. 405 kHz.
D. 40 kHz.
6 . modulation is particularly adaptable to computer systems, data transmission, and space
communications.
A. Pulse-amplistude
B. Pulse-position
C. Phase
D. Pulse
7. Some methods of pulse modulation provide for transmission of a number of channels on a single carrier.
That is accomplished by dividing the transmission time among the several channels, which is called
A. damping.
B. multiplexing.
C. frequency-shift keying.
D. duplexing.
8. A 1,200 kHz RF carrier is amplitude-modulated by a 500 Hz sinewave audio signal. The upper sideband
frequency would be
A. 1,195 kHz.
B. 1,205 kHz.
C. 120.5 kHz.
D. 1,200.5 kHz.
9. In a Foster-Seeley phase shift discriminator, certain voltage conditions depend on whether the input
signal is at, above, or below resonance. Look at the vector diagram shown in the figure above. Which of
the following statements correctly describes the circuit represented by this vector diagram?
A. The input signal in this circuit is at resonance, and the discriminator's secondary voltages cancel each other.
B. The input signal is above resonance, and no output signal will be produced.
C. The output signal produced will be directly ...
This document contains 72 multiple choice questions about industrial electronics asked by Prof. Hitesh Dholakiya. The questions cover topics like nucleonic sensing methods, EEG, therapeutic radiology energies, characteristics of devices like SCRs, triacs, diacs, UJTs, and their applications. They also include questions on control systems, root locus analysis, and properties of semiconductors like silicon. The questions are part of an MCQ set created by Prof. Dholakiya to test knowledge of industrial electronics concepts.
Electrical Engineering is the Branch of Engineering. Electrical Engineering field requires an understanding of core areas including Thermal and Hydraulics Prime Movers, Analog Electronic Circuits, Network Analysis and Synthesis, DC Machines and Transformers, Digital Electronic Circuits, Fundamentals of Power Electronics, Control System Engineering, Engineering Electromagnetics, Microprocessor and Microcontroller. Ekeeda offers Online Mechanical Engineering Courses for all the Subjects as per the Syllabus. Visit : https://ekeeda.com/streamdetails/stream/Electrical-and-Electronics-Engineering
This document discusses different types of power distribution systems including DC and AC systems. It covers topics such as radial, ring main, and interconnected connection schemes. It also discusses different types of DC and AC distribution like single-ended and double-ended feed as well as balanced and unbalanced loads. Calculation methods for voltage drops in DC and AC systems considering factors like resistance, reactance, and power factor are also presented. Examples of calculations for voltage drops in different types of distribution systems are provided.
Elec581 chapter 2 - fundamental elements of power eletronicsTarek Schehadeih
This document discusses fundamental concepts of power electronics including potential levels in circuits, voltage across circuit elements like switches, resistors, inductors and capacitors. It also covers diodes and their behavior as switches based on forward or reverse bias. Diode circuits like rectifiers and filters are described. Thyristors are then introduced as switches whose conduction can be controlled by a gate signal. Basic thyristor circuits include controlled rectifiers supplying passive or active loads.
The document provides questions and answers related to power electronics topics such as IGBTs, thyristors, power diodes, MOSFETs, choppers, and inverters. Some key highlights include:
IGBTs are popular due to their lower heat requirements and switching losses compared to other devices. Thyristors can be turned on through various methods including forward voltage, gate, and light triggering. Power diodes have higher voltage, current, and power ratings than signal diodes. IGBTs, MOSFETs, and BJTs are voltage, voltage, and current controlled devices respectively based on their gate/base characteristics. PWM is a common control method for inverters and choppers
Ict -computer_hardware_servicing_curriculum_guides_for_grades_7_to_10John Paul Intano
The document provides an overview of the curriculum for an introductory course on computer hardware servicing for Grade 7/8 students. The course covers key competencies including the use of tools, maintaining tools and equipment, performing measurements and calculations, interpreting technical drawings, and practicing occupational health and safety procedures. It aims to introduce students to basic concepts in the field and potential career opportunities. The curriculum is structured into 7 lessons that address topics like personal entrepreneurial competencies, understanding the environment and market, using and maintaining tools and equipment, and following safety protocols.
This document provides an introduction to the basic components of a computer system, including both hardware and software. It describes the major internal hardware components of a typical personal computer, such as the motherboard, CPU, memory, storage devices, ports, and cables. It also covers basic input/output devices like keyboards, mice, monitors, and printers. The document is intended to familiarize readers with computer components as part of a module on computer hardware servicing.
Finalictcomputerhardwareservicinggrades7 10-140422213202-phpapp02John Paul Intano
The document provides an overview of the curriculum for an introductory course on computer hardware servicing for Grade 7/8 students. The course covers key competencies including the use of tools, maintaining tools and equipment, performing measurements and calculations, interpreting technical drawings, and practicing occupational health and safety procedures. It aims to introduce students to basic concepts in the field and potential career opportunities. The curriculum is structured into 7 lessons that address topics like personal entrepreneurial competencies, understanding the environment and market, using and maintaining tools and equipment, and following safety protocols.
The document is a practice exam for an automotive class, containing 50 multiple choice questions testing knowledge of tools, measurement, vehicle operation, and road signs. The questions cover topics like identifying the appropriate tool for a task, tool safety, measurement units and tools, vehicle metrics like distance and speed, and recognizing standard traffic signs. Maintaining and properly storing measuring instruments is important to avoid damage.
This document provides an overview of key concepts in political science, including definitions of political science, the state, government, and constitution. It discusses the correlates and origins of political science. The state is defined as having four essential elements: people, territory, government, and sovereignty. Several theories are outlined on the origin of the state, including the divine, necessity, paternalistic, and social contract theories. The functions and forms of government are also summarized. Key concepts like sovereignty, eminent domain, and taxation are explained in the context of the inherent powers of the state. The document then provides definitions and discussions of concepts like nation, constitution, bill of rights, and separation of church and state.
This document provides an overview of key concepts in visual arts, including definitions of terms like painting, sculpture and architecture. It discusses elements of visual arts like line, shape, color, texture and space. It also covers principles of design such as balance, proportion, rhythm, emphasis and unity. Additionally, it examines painting styles and movements, notable Philippine painters and their works, sculpting processes and materials, architecture styles, and the history of Philippine architecture. The document is intended to help students understand and analyze different aspects of visual arts.
This document provides an overview of key concepts in visual arts, including definitions of terms like painting, sculpture and architecture. It discusses elements of visual arts like line, shape, color, texture and space. It also covers principles of design such as balance, proportion, rhythm, emphasis and unity. Additionally, it examines painting styles and movements, notable Philippine painters and their works, sculpting processes and materials, architecture styles, and the history of Philippine architecture. The document is intended to help students understand and analyze different aspects of visual arts.
Tle review-drafting-carpentry-masonry-plumbing-electricityJohn Paul Intano
The document discusses drafting and carpentry. For drafting, it describes common drafting equipment like T-squares, triangles, and pencils. It also discusses different types of drawings like orthographic, isometric, and pictorial drawings. For carpentry, it outlines different types of wood and lumber defects. It also explains joints like butt joints, mortise and tenon joints, and describes common carpentry tools for cutting, holding, smoothing, boring, and driving.
This document contains a 35-question practice exam on Technical Drawing (Drafting) and a 35-question practice exam on Carpentry/Woodworking and Basic Masonry and Concrete. The questions cover topics like drafting instruments, types of drawings, lettering guidelines, wood properties, saw types, wood joints, concrete mix proportions, masonry tools, and more. The document provides the questions, answers, and information about the review center where the practice exams are being offered.
This document contains a pre-board exam with 67 multiple choice questions covering various topics in education. The questions test knowledge of educational theories, classroom management strategies, curriculum and instruction, assessment, and the Philippine educational system. Sample questions include those about Piaget's stages of development, Bloom's taxonomy, behaviorism, classroom routines and discipline, learning objectives, and the history of education in the Philippines.
Teacher licensing exam with multiple choice questions covering various topics related to teaching:
- Question 101 asks about the characteristic of a quality professional development program for teachers.
- Questions 102 and 125 are about ensuring high standards for teachers' personal and professional development through measures like monitoring implementation of training.
- Other questions cover topics like the role of teachers in the community, creating a safe and secure learning environment, cultural heritage transmission, political influences on schools, remote school management, inclusive education, gender issues, and teachers' legal and professional obligations.
This document provides an introduction to the National Competency-Based Teacher Standards (NCBTS) in the Philippines. It explains that the NCBTS aims to provide teachers with a single framework that defines effective teaching. The NCBTS is organized into 7 domains that comprise an integrated view of teaching competencies. The domains cover social regard for learning, learning environment, diversity of learners, curriculum, planning and assessment, community linkages, and personal growth. The NCBTS is intended to guide teachers' professional development and help improve student learning outcomes.
The document contains a practice test with 50 multiple choice questions about computer terminology and history. The questions cover topics such as:
- Parts of a typewriter and their functions
- Early calculating devices like the abacus
- Inventors and inventions in the history of computing like Charles Babbage, the Analytical Engine, ENIAC, etc.
- Characteristics of different types and sizes of computers
- Components of a basic computer system like hardware, software, CPU, memory, I/O devices
- Data storage concepts like bits, bytes, files, records, databases
- Functions of an operating system and basic input/output/processing
This document contains a practice test with 50 multiple choice questions about manufacturing processes, business concepts, and typewriter parts. The questions cover topics such as different types of manufacturing like batch manufacturing (question 1), elements needed for a business like capital (question 9), functions of management like planning (question 20), and components of a typewriter like the carriage (question 49). The practice test is intended to help review these various topics in preparation for an exam.
This document contains a practice test with 50 multiple choice questions about business and entrepreneurship topics. The questions cover various concepts like the different types of economies, small business ownership, factors to consider when searching for business opportunities, wholesaling and retailing functions, and different methods of sales. The document is a review for an exam on trade and livelihood education (TLE).
This document contains a LET exam with multiple choice questions covering various topics in education. It includes 67 questions related to teaching principles, classroom management, assessment, learning theories, and the role of teachers. The questions assess knowledge of concepts like reinforcement, learning environments, developmental stages, educational philosophies and more. The document provides an example of an exam used to evaluate teacher licensure in the Philippines.
The document contains questions about cooking techniques, nutrients, and food science terms. It asks the reader to identify techniques like deglazing used by Jonas in the pan, nutrients like fat that have more calories per gram than others, and terms like collagen that is found in meat connective tissue. It also tests knowledge of cooking methods, food groups, meal planning principles, and food service procedures.
This document discusses concepts related to nutrition, health, and grooming. It provides information on essential nutrients including carbohydrates, proteins, fats, vitamins, and minerals. It emphasizes the importance of proper nutrition, exercise, cleanliness, and posture for overall health and appearance. Specific grooming tips are also given for skin care, dental hygiene, hair care, nail care, and clothing care.
This document contains a practice test for a general education natural science reviewer consisting of 40 multiple choice questions covering various topics in biology, anatomy, health, and earth science. The questions assess knowledge of topics like adaptive mechanisms, gene manipulation, hormones, endocrine disorders, cell structures, ecosystems, photosynthesis, human physiology, immunity, reproduction, and more. The practice test is from a website and Facebook page called InfiniThink providing educational review materials.
The document contains a 40-item practice test for general education mathematics. The questions cover a range of math topics including factors, expressions, equations, ratios, rates, proportions, sequences, trigonometry, lines, and geometry. The final question asks for the slope of the perpendicular bisector of a line segment with given endpoints.
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
Walmart Business+ and Spark Good for Nonprofits.pdfTechSoup
"Learn about all the ways Walmart supports nonprofit organizations.
You will hear from Liz Willett, the Head of Nonprofits, and hear about what Walmart is doing to help nonprofits, including Walmart Business and Spark Good. Walmart Business+ is a new offer for nonprofits that offers discounts and also streamlines nonprofits order and expense tracking, saving time and money.
The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
Walmart Business + (https://business.walmart.com/plus) is a new shopping experience for nonprofits, schools, and local business customers that connects an exclusive online shopping experience to stores. Benefits include free delivery and shipping, a 'Spend Analytics” feature, special discounts, deals and tax-exempt shopping.
Special TechSoup offer for a free 180 days membership, and up to $150 in discounts on eligible orders.
Spark Good (walmart.com/sparkgood) is a charitable platform that enables nonprofits to receive donations directly from customers and associates.
Answers about how you can do more with Walmart!"
How to Fix the Import Error in the Odoo 17Celine George
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UPRAHUL
This Dissertation explores the particular circumstances of Mirzapur, a region located in the
core of India. Mirzapur, with its varied terrains and abundant biodiversity, offers an optimal
environment for investigating the changes in vegetation cover dynamics. Our study utilizes
advanced technologies such as GIS (Geographic Information Systems) and Remote sensing to
analyze the transformations that have taken place over the course of a decade.
The complex relationship between human activities and the environment has been the focus
of extensive research and worry. As the global community grapples with swift urbanization,
population expansion, and economic progress, the effects on natural ecosystems are becoming
more evident. A crucial element of this impact is the alteration of vegetation cover, which plays a
significant role in maintaining the ecological equilibrium of our planet.Land serves as the foundation for all human activities and provides the necessary materials for
these activities. As the most crucial natural resource, its utilization by humans results in different
'Land uses,' which are determined by both human activities and the physical characteristics of the
land.
The utilization of land is impacted by human needs and environmental factors. In countries
like India, rapid population growth and the emphasis on extensive resource exploitation can lead
to significant land degradation, adversely affecting the region's land cover.
Therefore, human intervention has significantly influenced land use patterns over many
centuries, evolving its structure over time and space. In the present era, these changes have
accelerated due to factors such as agriculture and urbanization. Information regarding land use and
cover is essential for various planning and management tasks related to the Earth's surface,
providing crucial environmental data for scientific, resource management, policy purposes, and
diverse human activities.
Accurate understanding of land use and cover is imperative for the development planning
of any area. Consequently, a wide range of professionals, including earth system scientists, land
and water managers, and urban planners, are interested in obtaining data on land use and cover
changes, conversion trends, and other related patterns. The spatial dimensions of land use and
cover support policymakers and scientists in making well-informed decisions, as alterations in
these patterns indicate shifts in economic and social conditions. Monitoring such changes with the
help of Advanced technologies like Remote Sensing and Geographic Information Systems is
crucial for coordinated efforts across different administrative levels. Advanced technologies like
Remote Sensing and Geographic Information Systems
9
Changes in vegetation cover refer to variations in the distribution, composition, and overall
structure of plant communities across different temporal and spatial scales. These changes can
occur natural.
How to Setup Warehouse & Location in Odoo 17 InventoryCeline George
In this slide, we'll explore how to set up warehouses and locations in Odoo 17 Inventory. This will help us manage our stock effectively, track inventory levels, and streamline warehouse operations.
How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
1. ELECTRONICS
1. It is an electronic device use to limit the flow of electric current.
A. capacitor B. resistor C. transistor D. diode
2. It is an electronic device use to stow electric charge.
A. resistor B. transistor C . diode D. capacitor
3. It is a solid state device use to amplify the small input signal to become large output signal.
A. resistor B. transistor C. diode D. capacitor
4. It is the simplest solid state device which is use as rectifier.
A. transistor B. diode C. resistor D. capacitor
5. It is a kind of electronic equipment use to measure resistance.
A. Voltmeter B. Ohm meterC. Ammeter D. Wattmeter
6. It is a kind of diagram where all information its symbol and designation are emphasize.
A. Electricity B. Schematic diagram C. Wiring diagram D. fish tailing diagram
7. It is a branch of physics which deals with the study of the behavior properties and control
electrons in the circuit.
A. Electricity B. Electronics C. Radio Mechanics D. Computer
8. It is a kind of circuit where there is a continuous flow of electric current.
A. Close circuit B. Open circuit C. Short circuit D. Ground circuit
9. It is a process of removing unwanted copper from the PCB.
A. Soldering B. Etching C. Boring D. Mounting
10. How much is the resistance of a 100 watts 120 volts light bulb?
A. 1.44 Ω C. 144 Ω
B. 14.4 Ω D. 1440 Ω
11. Commonly resistor is connected in a circuit to
A. drop voltage C. increase voltage
B. drop reactance D. increase reactance
12. If a given resistor has color coded value as brown, red, orange and gold, its nominal value is
A. 123 Ω ± 5% C. 12,000 Ω ± 5%
B. 123 Ω ± 10% D. 12,000 Ω ± 10%
13. When two resistors having different values are connected in parallel, their total resistance can
be calculated as
A. RT = N/2 C. 1/RT = 1/R1 + 1/R2
B. RT = R1 + R2 D. none of the above
14. The total resistance of the resistors connected in series with values such as 1.2 k Ω and 500 Ω is
A. 1.7 k Ω C. 352.94 Ω
B. 1,700 Ω D. a and b
15. It is a property of circuit element which opposes any current change, and is measured in Henry,
this is called
A. Capacitance C. Resistance
B. Inductance D. Conductance
16. The power transformer characterized with more number of turns at the primary than the
secondary winding is a transformer known as
A. step-down C. auto-transformer
B. step-up D. isolating
17. Inductors L1 and L2 are in parallel with each other having the same values of 300mH. Their
combined inductance is
A. 150mH C. 0
B. 600mH D. none of the above
18. If a power transformer has NP of 1800 turns, NS of 74 turns and EP of 220 V, how much is the ES?
A. 3 V C. 9 V
B. 6 V D. 12 V
19. Capacitor’s property which says how much charge can be stored units dielectric is referred to as
A. Resistance C. Inductance
B. Conductance D. Capacitance
20. A capacitor consists of two
A. conductors separated by an insulator
B. insulators separated by a conductor
C. conductors alone
D. insulators alone
21. To combine capacitances in series. It is computed simply by
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2. A. 1/CT = 1/C1 + 1/C2 C. CT = C1 + C2
B. C = Q/V D. None of the above
22. The unit of measure of electrical current is
A. Volt C. Ohm
B. Ampere D. Watt
23. When capacitors are connected in parallel, their capacitances can be calculated as
A. CT = C1 + C2 C. C = Q/V
B. 1/CT = 1/C1 + 1/C2 D. None of the above
24. A capacitance of 0.02 µF equals
A. 0.02 X 10-12
F C. 0.02 X 106
F
B. 0.02 X 10-6
F D. 200 X 10-12
F
25. When a semiconductor diode’s anode terminal is supplied with negative dc voltage and the
cathode with positive dc voltage, the diode bias is
A. Forward C. No bias
B. Reverse D. More bias
26. When the arrow head on the electronic symbol of a semiconductor transistor is pointing inward,
the type of transistor is
A. NPN C. NPNP
B. PNP D. PNPN
D. Larger than a no. 8 copper wire
27. If 12 volts are applied to a certain lamp whose filament has a resistance of 3 ohms, the current
flow through the lamp filament will be
A. 4 amp C. 8 amp
B. 36 amp D. 12 amp
28. If a copper wire becomes heated because of an excessive amount of current flowing through it,
the resistance of the wire
A. Decreases C. Remains the same as when the wire is cold
B. Increases D. Becomes zero
29. To measure the current flowing through a circuit, connect an
A. Ohm meter C. Volt meter
B. Ammeter D. Meter in series with the circuit
30. In the laboratory, to verify the current in a resistor, _______________.
a. an ammeter is connected in series with the resistor
b. a voltmeter is connected in series with the resistor
c. an ammeter is connected parallel to the resistor
d. a voltmeter is connected parallel to the resistor
31. Which statement is true?
a. An ammeter has negligible resistance.
b. A voltmeter has negligible resistance.
c. An ammeter measures voltage.
d. A voltmeter measures current.
32. Kirchhoff’s Current Law : nodes ; Kifchhoff’s Voltage Law : __________
a. junction b. loops c. meshes d. b and c
33. Kirchhoff’s Laws are applicable to networks with series resistors.
a. Always true c. Sometimes true
b. Often time d. Never true
34. The conservation law that served as basis for Kirchhoff’s Current Law is _________.
a. conservation of charge
b. conservation of energy
c. conservation of mass
d. conservation of quantum numbers
35. Which statement is true about Kirchhoff’s Current Law?
a. The sum of the currents entering the node is equal to that leaving the same node.
b. The current in a conducting loop is the same for all resistors in the loop.
c. The numerical sum of the currents entering a node is zero.
d. The sum of the current over a loop is zero.
36. A capacitor and an inductor are electronic components that store electrical energy. How is an
inductor different from a capacitor?
a. An inductor is an electromagnet
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3. b. An inductor is made up of a coil of wire
c. An inductor may be made into a capacitor
d. An inductor stores energy in its magnetic field
37. Which of the following is NOT a function of a resistor in a circuit?
I. It limits the flow of current
II. It prevents short and overloading
III. It regulates the voltage of circuit elements
a. I only b. II only c. I and II d. I, II and III
38. Which of the following describes a step up transformer?
Primary Coil Secondary Coil
No. of
Turns
Voltage No. of turns Voltage
a. 200 10 V 50 100 V
b. 200 10 V 150 100 V
c. 200 10 V 200 100 V
d. 200 10 V 2000 100
39. How does a diode convert an AC signal to a DC signal?
a. By filtering the flow of current in the circuit
b. By allowing current to pass in one direction
c. By resisting the flow of current in the circuit
d. By regulating the flow of current in the circuit
40. Which of the following instrument is used to measure the amount of current flowing in an
element in a circuit?
a. ammeter b. ohmmeter c. tester d. voltmeter
41. A transformer has 250 turns in its secondary coil. The secondary voltage is 10 V. If the
transformer is connected to a 220 V source, how many turns does the transformer have in its
primary coil?
a. 5500 b. 2500 c. 500 d. 11
42. Which of the following semiconducting device serves as an amplifier in a circuit?
a. capacitors b. diodes c. integrated circuits d. transistors
43. A step up transformer is used by power plants to transmit electrical power at a very high
voltage over a large distance. Why is this so?
a. It is the cheapest way of transmitting electrical power.
b. Because large amount of power requires large amount of voltage for transmission.
c. Because high voltage transmission lines have almost zero resistance to the flow of
current.
d. Because current is small in high voltage transmission lines preventing significant waste of
electrical energy.
44. Which of the following semiconducting device is generally used as an indicator when an
appliance is turned on or off?
a. Light emitting diodes c. Photoresistors
b. Photodiodes d. Small lamps
45. Compared to the primary coil, the number of turns in the secondary coil of a step up
transformer is _____________.
a. less c. the same
b. more d. infinite
46. What does a changing magnetic field in a coil of wire produce?
a. An induced power c. An induced resistance
b. An induced voltage d. An induced coil polarity
47. Why does alternating current replace direct current for general use?
a. Alternating current has more power than direct current
b. Alternating voltages are convenient to transform
c. Generators always generate alternating current
d. Alternating current is safer than direct current
48. How does the audio signal of television networks transmitted?
St. Louis Review Center, Inc Davao Tel. no. (082) 224-2515 or 222-8732 20
4. a. By modulating the frequency of the wave
b. By modulating the amplitude of the wave
c By transforming it to an analog signal
d. By transforming it to a digital signal
49. Which of the following medical devices DOES NOT use the principles of electricity and
magnetism to create images or patterns of how organs in the body functions?
50. In the laboratory, to determine the voltage across a resistor, ______________.
a. an ammeter is connected in series with the resistor
b. a voltmeter is connected in series with the resistor
c. an ammeter is connected parallel to the resistor
d. a voltmeter is connected parallel to the resistor
51. Which statement is true?
a. An ammeter has negligible resistance
b. A voltmeter has negligible resistance
c. An ammeter measures voltage
d. A voltmeter measures current
52. Kirchhoff’s Current Law : conservation of charge ; Kirchhoff’s Voltage Law : __________
a. conservation of mass
b. conservation of energy
c. conservation of quantum numbers
d. b and c
53. Kirchhoff’s Laws is applicable to networks containing any electrical elements.
a. Always true
b. Often time
c. Sometimes true
d. Never true
54. Kirchhoff’s Voltage Law is applicable to networks containing ___________.
a. capacitors
b. inductors
c. potential and current sources
d. resistors
55. Which statement is NOT true about Kirchhoff’s Laws?
a. The numerical sum of the voltage rise and that of the potential drop in a conducting loop
are equal.
b. The sum of the voltage rise and the voltage drop in a conducting loop is zero.
c. The voltage across any resistor in a loop is always a voltage drop.
d. The voltage across a voltage source is sometimes a voltage drop.
56. Compared to the primary coil, the number of turns in the secondary coil of a step down
transformer is _____________.
a. less c. the same
b. more d. infinite
57. How does the video signal of television networks transmitted?
a. By modulating the frequency of the wave
b. By modulating the amplitude of the wave
c By transforming it to an analog signal
d. By transforming it to a digital signal
58. Which of the following describes a step down transformer?
Primary Coil Secondary Coil
No. of
Turns
Voltage No. of turns Voltage
a. 50 100 V 200 10 V
b. 150 100 V 200 10 V
c. 200 100 V 200 10 V
d. 2000 100 V 200 10 V
59. Which of the following instrument is used to measure the potential difference across an element
in a circuit?
a. Ammeter b. Ohmmeter c. Tester d. Voltmeter
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5. 60. The amount of energy consumed by an appliance per unit time is indicated as the appliance’s
a. current b. power c. resistance d. voltage
61. Which of the following can be a function of a transistor in a circuit?
a. Amplifies current or electric signals
b. Limits the flow of current
c. Stores electrical energy
d. Regulates voltage
62. A battery has a voltage of 12 V. What does this mean?
a. Both terminals of the battery have a 12 V electric potential.
b. Both terminals of the battery have the same electric potential.
c. One of the terminals of the battery is 12 V and the other is 0 V.
d. One of the terminals of the battery is 12 V higher in electric potential than the other.
63. Which of the following device best demonstrates the concept that magnetism exerts a force on a
moving charge?
a. Diode b. Generator c. Motor d. Transformer
64. Which of the following can cause electric shock?
a. Current and power
b. Current and voltage
c. Voltage and power
d. Voltage and resistance
65. Which of the following can serve as a source of radio waves transmitted by telecommunications
systems?
a. Electromagnetic waves
b. Nuclear reactions
c. Electric circuits
d. The sun
66. A fuse or a circuit breaker is always connected in series with the appliance or the circuit that it
intends to protect when short or overloading happens. Why is this so?
a. It is easier to connect a fuse in series than in parallel.
b. Short and overloading always happen in series circuits.
c. There is higher probability for overloading in parallel circuits.
d. There is only one path for current to flow in a series connection.
1. B
2. D
3. B
4. B
5. B
6. C
7. B
8. A
9. A
10. C
11. D
12. C
13. C
14. D
15. B
16. A
17. A
18. C
19. D
20. A
21. –
22. B
23. A
24. B
25. A
26. –
27. A
28. B
29. B
30. A
31. A
32. D
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6. 33. A
34. A
35. A
36. D
37. D
38. D
39. B
40. A
41. A
42. D
43. D
44. A
45. B
46. B
47. B
48. –
49. –
50. D
51. A
52. B
53. A
54. C
55. D
56. A
57. B
58. D
59. B
60. B
61. A
62. D
63. C
64. A
65. C
66. D
St. Louis Review Center, Inc Davao Tel. no. (082) 224-2515 or 222-8732 23
7. 33. A
34. A
35. A
36. D
37. D
38. D
39. B
40. A
41. A
42. D
43. D
44. A
45. B
46. B
47. B
48. –
49. –
50. D
51. A
52. B
53. A
54. C
55. D
56. A
57. B
58. D
59. B
60. B
61. A
62. D
63. C
64. A
65. C
66. D
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