dc generator class 3-6.pptx
•Download as PPTX, PDF•
0 likes•5 views
This document discusses lap and wave winding methods for electrical generators. Lap winding involves connecting the ends of coils to the same segment of a commutator. Wave winding connects the starting end of one coil to the end of the next coil of the same polarity. An example problem calculates the induced EMF and armature current of a short-shunt compound generator delivering 30A at 220V. The document provides guidance to refer to notes for better understanding generator equations and examples involving speed and load current calculations. Students are assigned math problems related to the content covered.
Report
Share
Report
Share
Recommended
Chapter 2 mukesh gurjar
A transformer transfers electrical energy between two or more circuits through electromagnetic induction. It works on the principle of mutual induction between two or more windings due to a changing magnetic field. Transformers are used to increase or decrease alternating voltages in power applications. The primary winding is supplied with alternating current which produces a changing magnetic flux in the transformer core. This changing flux induces a changing voltage in the secondary winding due to electromagnetic induction based on Faraday's law of induction. Real transformers have losses such as core losses from hysteresis and eddy currents, as well as winding resistance losses. Transformers can be modeled using an equivalent circuit to represent these losses and other factors.
DC GENERATOR EE8301 Electrical Machines 1
Construction and components of DC Machine – Principle of operation – Lap and wave windings-EMF equations– circuit model – armature reaction –methods of excitationcommutation – interpoles compensating winding –characteristics of DC generators.
Interaction of the secondary arc
1) Secondary arcs on transmission lines can be modeled as a time-varying resistance using an arc conductance equation that represents the energy balance in the arc column.
2) Field tests on transmission lines are useful for verifying numerical arc simulations and understanding arc behavior. Tests showed secondary arcs excite traveling waves that influence the arc current waveform.
3) Arc parameters like the time constant are represented as functions of random arc length variations. This allows simulations to reproduce the random secondary arc behavior observed in tests.
BE8251 AGRI 24may.pptx
This document discusses magnetic circuits and different types of electrical machines. It introduces key concepts like magnetic flux, magnetomotive force, reluctance, and permeability in magnetic circuits. It explains that generators convert mechanical energy to electrical energy, motors convert electrical energy to mechanical energy, and transformers change voltage levels. Faraday's laws of electromagnetic induction and Lenz's law are also summarized. DC generators are described as converting mechanical rotation into electrical current via the principle of electromagnetic induction. The commutator allows the induced current in the generator coils to flow in one direction to the external circuit.
BACK to BASIC 5.pdf
1) An inductor opposes changes in current through self-induction, generating a counter-EMF when current increases or decreases. This causes the current in an AC inductive circuit to lag 90 degrees behind the voltage.
2) Inductive reactance represents an inductor's opposition to AC current, and increases with frequency and inductance. It can be calculated using XL=2πfL.
3) A purely inductive AC circuit does not consume any power on average, as energy stored in the magnetic field during one half of the cycle is returned during the other half.
Lesson 2 - Ohm's Law and Resisitive Circuits 2.pptx
This document provides an overview of a lecture on Ohm's Law and resistive circuits. It introduces key concepts like Ohm's Law, power, energy, series and parallel resistive circuits. The objectives are to understand and apply Ohm's Law, define units of power and energy, calculate energy and power, recognize different circuit connections, and solve circuits to find currents and voltages. Example problems are provided and worked through on topics like series, parallel and series-parallel resistive circuits.
Nptel.ac.in courses 108106071_pdfs_1_4
1. An ideal transformer has an infinitely permeable core so very little current is needed to establish flux. It also has lossless windings so there is 100% efficiency.
2. Mutual induction occurs between the primary and secondary windings via the magnetic flux. The voltage ratio is equal to the ratio of turns.
3. When load is connected, the secondary current produces a demagnetizing force, but the primary automatically increases its current to maintain the original flux level.
transformer working principle
The document discusses the working principles of transformers. It states that transformers are used to increase or decrease voltage levels for power transmission and distribution. They work by electromagnetic induction - a changing current in the primary winding creates a magnetic field that induces a voltage in the secondary winding. The turns ratio determines whether a transformer steps up or steps down voltage, and it must be considered when referring impedances between the primary and secondary circuits.
Recommended
Chapter 2 mukesh gurjar
A transformer transfers electrical energy between two or more circuits through electromagnetic induction. It works on the principle of mutual induction between two or more windings due to a changing magnetic field. Transformers are used to increase or decrease alternating voltages in power applications. The primary winding is supplied with alternating current which produces a changing magnetic flux in the transformer core. This changing flux induces a changing voltage in the secondary winding due to electromagnetic induction based on Faraday's law of induction. Real transformers have losses such as core losses from hysteresis and eddy currents, as well as winding resistance losses. Transformers can be modeled using an equivalent circuit to represent these losses and other factors.
DC GENERATOR EE8301 Electrical Machines 1
Construction and components of DC Machine – Principle of operation – Lap and wave windings-EMF equations– circuit model – armature reaction –methods of excitationcommutation – interpoles compensating winding –characteristics of DC generators.
Interaction of the secondary arc
1) Secondary arcs on transmission lines can be modeled as a time-varying resistance using an arc conductance equation that represents the energy balance in the arc column.
2) Field tests on transmission lines are useful for verifying numerical arc simulations and understanding arc behavior. Tests showed secondary arcs excite traveling waves that influence the arc current waveform.
3) Arc parameters like the time constant are represented as functions of random arc length variations. This allows simulations to reproduce the random secondary arc behavior observed in tests.
BE8251 AGRI 24may.pptx
This document discusses magnetic circuits and different types of electrical machines. It introduces key concepts like magnetic flux, magnetomotive force, reluctance, and permeability in magnetic circuits. It explains that generators convert mechanical energy to electrical energy, motors convert electrical energy to mechanical energy, and transformers change voltage levels. Faraday's laws of electromagnetic induction and Lenz's law are also summarized. DC generators are described as converting mechanical rotation into electrical current via the principle of electromagnetic induction. The commutator allows the induced current in the generator coils to flow in one direction to the external circuit.
BACK to BASIC 5.pdf
1) An inductor opposes changes in current through self-induction, generating a counter-EMF when current increases or decreases. This causes the current in an AC inductive circuit to lag 90 degrees behind the voltage.
2) Inductive reactance represents an inductor's opposition to AC current, and increases with frequency and inductance. It can be calculated using XL=2πfL.
3) A purely inductive AC circuit does not consume any power on average, as energy stored in the magnetic field during one half of the cycle is returned during the other half.
Lesson 2 - Ohm's Law and Resisitive Circuits 2.pptx
This document provides an overview of a lecture on Ohm's Law and resistive circuits. It introduces key concepts like Ohm's Law, power, energy, series and parallel resistive circuits. The objectives are to understand and apply Ohm's Law, define units of power and energy, calculate energy and power, recognize different circuit connections, and solve circuits to find currents and voltages. Example problems are provided and worked through on topics like series, parallel and series-parallel resistive circuits.
Nptel.ac.in courses 108106071_pdfs_1_4
1. An ideal transformer has an infinitely permeable core so very little current is needed to establish flux. It also has lossless windings so there is 100% efficiency.
2. Mutual induction occurs between the primary and secondary windings via the magnetic flux. The voltage ratio is equal to the ratio of turns.
3. When load is connected, the secondary current produces a demagnetizing force, but the primary automatically increases its current to maintain the original flux level.
transformer working principle
The document discusses the working principles of transformers. It states that transformers are used to increase or decrease voltage levels for power transmission and distribution. They work by electromagnetic induction - a changing current in the primary winding creates a magnetic field that induces a voltage in the secondary winding. The turns ratio determines whether a transformer steps up or steps down voltage, and it must be considered when referring impedances between the primary and secondary circuits.
Inducción electromagnética
The document discusses Faraday's law of induction and electromagnetic induction. It provides an example of calculating the magnetic flux through a planar area. It then analyzes the example, finding the induced EMF and induced current in the circuit. It explains that if the coil was made of an insulating material instead, the induced EMF would remain the same but the induced current would be lower due to the higher resistance.
Transformer
construction of transformer , core , winding , theory of operation , equivalent circuit of transformer,emf equation of transformer,type of transformer
Electromagnetic induction and transformer
Electromagnetic induction occurs when a changing magnetic field induces a current in a conductor. Magnetic flux is the measure of the magnetic field passing through an area. Faraday's law states that an electromotive force (EMF) is induced in a conductor when there is a change in magnetic flux over time. Transformers use this principle to change voltage levels using a primary and secondary coil wound around an iron core. Lenz's law describes how the induced current will flow in a direction that creates an opposing magnetic field to the changing field that created it.
Chapter1 part1
This document discusses magnetic circuits and electromagnetic induction. It covers topics such as magnetic fields, flux, reluctance, magnetomotive force, self and mutual inductance. Key points include:
- Magnetic fields are fundamental to energy conversion in electrical machines.
- Magnetic flux passes through magnetic materials, forming closed loops.
- Electromagnetic induction causes an induced emf when magnetic flux through a coil changes.
- Self and mutual inductance describe the relationship between current, flux linkage, and induced emf in coils.
9780750687478.pdf
This chapter discusses a.c. circuits containing resistors, inductors, and capacitors connected in series. It introduces the concepts of reactance and impedance to analyze simple a.c. series circuits. The key learning outcomes are to understand phasor and waveform diagrams for resistance, inductance, and capacitance, and analyze circuits using impedance and power triangles. The chapter also covers power dissipation calculations and introduces the concept of series resonance.
Arpita nandi
The document is a physics project report submitted by Arpita Nandi to her teacher Akash Baidya. In the acknowledgement, Arpita thanks Akash for his guidance and for providing an interesting physics project topic. She conducted an experiment to study how the self-inductance of a coil depends on various factors. The experiment involved measuring current and bulb brightness in a circuit containing a coil at different frequencies both with and without an iron core inside the coil. Arpita concluded that self-inductance increases when an iron core is inserted or frequency is decreased.
Transformer wikipedia, the free encyclopedia
The document summarizes key aspects of transformers:
1. Transformers transfer energy through inductive coupling between winding circuits, with a varying current in the primary winding creating a varying magnetic flux that induces a voltage in the secondary winding.
2. Transformers range in size from small units in microphones to large units connecting power grids. They are essential for transmission, distribution and use of electrical energy.
3. An ideal transformer induces a secondary voltage proportionate to the primary voltage and winding turn ratios, with no losses. Real transformers have additional factors like core losses, winding impedances and leakage flux.
Transformer wikipedia, the free encyclopedia
The document summarizes key information about transformers:
- Transformers transfer energy through inductive coupling between winding circuits. A changing current in the primary winding creates a changing magnetic field that induces a voltage in the secondary winding.
- Transformers come in various sizes, from thumb-sized to units weighing hundreds of tons used in power grids. They are essential for transmitting, distributing, and utilizing electrical energy.
- An ideal transformer transfers power without losses according to turns ratio. Real transformers have losses from winding resistance, leakage flux, and magnetic core properties like hysteresis and eddy currents.
Transformer
This document discusses the construction and working of transformers. It begins with an introduction that defines a transformer as a device that changes AC electric power at one voltage level to another through magnetic coupling of two coils. It then covers the main topics of the structure and working principle of transformers, the different types of constructions including core and shell types, losses in transformers including copper, hysteresis and eddy current losses, the differences between ideal and practical transformers, and applications such as in transmission and distribution of power.
Generator ppt 1
The document discusses direct current (DC) machines and their operation. It provides details on:
1) The basic components and construction of a DC machine including its armature winding, commutator, and field poles.
2) How an alternating current induced in the armature coils is converted to direct current via the commutator and brush assembly.
3) Different types of armature windings including lap and wave windings.
4) Factors that affect the performance of DC machines such as armature reaction and how it can be mitigated through techniques like using interpoles.
5) Equations for calculating the generated electromotive force (EMF) in a DC generator.
6 faradays law
Faraday's law of induction states that a changing magnetic field induces an electromotive force (emf) in a nearby conductor. Michael Faraday discovered this phenomenon through experiments in 1831. Specifically, he found that moving a magnet toward or away from a coil of wire induces a temporary current in the coil. This led to the development of Faraday's law, which describes the relationship between the induced emf and the rate of change of the magnetic flux through a circuit. Applications of Faraday's law include electric generators, motors, and eddy current brakes.
electromagnetic induction
- Electromagnetic induction occurs when a changing magnetic field induces an electromotive force (emf) in a conductor. This induced emf can drive an electric current.
- Faraday's law of induction states that the induced emf in a coil is proportional to the rate of change of the magnetic flux through the coil. A changing magnetic field is necessary to induce an emf and current.
- Lenz's law describes the direction of the induced current: the current will flow in the direction that opposes the change producing it. This ensures the law of conservation of energy is obeyed.
- Transformers take advantage of electromagnetic induction to change the voltage of an alternating current (AC) while transmitting power efficiently over
Ferroresonance Conditions in Wind Parks
Wind parks are made up of a large number of
saturable inductances (power transformers, inductive voltage
transformers (IVTs)), as well as capacitors (cables, wind turbine
harmonic filters, capacitor voltage transformers (CVTs), voltage
grading capacitors in circuit-breakers). Therefore, they may
present scenarios in which ferroresonance occurs. This paper
presents the scenarios that can lead to ferroresonant circuits in
doubly fed induction generator (DFIG) based wind parks.
Full transformer
here all MAJOR TOPICS OF TRANSFORMER IS MAINTAIN & WHICH HELPFULL FOR REVISION AND LEANING AND TEACHING
Transformers
This document provides an overview of Chapter Two of a textbook on transformers. It covers:
- The basic principles of transformer operation and types of transformers.
- Equivalent circuits used to model transformers and how to determine component values through open and short circuit tests.
- Voltage regulation in transformers and how it is calculated using phasor diagrams.
- Other topics covered include parallel operation of transformers, three-phase transformer connections, and inrush current.
Lecture 7 bee
This document discusses mutually induced electromotive force (EMF) and its coefficient of mutual induction. It begins by describing two coils, A and C, placed side by side, where changing the current in coil A using a battery, switch, and resistor induces an EMF in coil C that is detected by a galvanometer. It then explains that the magnitude of the mutually induced EMF in coil C depends on the rate of change of the flux produced by coil A that is linked with coil C. This flux-linkage is quantified by the coefficient of mutual induction M, which equals the flux linkages in one coil per ampere of current in the other coil. Finally, it describes that the coefficient of mutual
Two marks
1. The document provides information about transformers, including definitions, parts, principles of operation, and applications. It contains questions and answers on topics like transformer ratings, losses, efficiency, and classifications.
2. Transformers work on the principle of mutual induction to transform voltage from one alternating current circuit to another without changing frequency. The main parts are the primary and secondary windings and the magnetic core.
3. Transformers are used in power generation, transmission and distribution to step up or step down voltages for efficient transmission or use by customers.
RGPV BE 104 Unit II
This document provides information about magnetic circuits, transformers, and their components. It begins with reviewing laws of magnetism, flux, and their relationship. It then discusses analysis of magnetic circuits and single phase transformers. The document outlines basic concepts and construction features of transformers, including voltage and current transformation, equivalent circuits, and transformer tests.
Electrical Technology by nanajee
In this material, the contents description is very simple and neat manner. The students will easy to understand.
Transformer construction,types and working
this is good for electrical engineering students to present seminar in your college or university....
Lecture 01.pptx
This document provides an overview of satellite communication principles and the evolution of communication satellites. It discusses how Arthur C. Clarke first conceived of the idea of communication satellites in geostationary orbits in 1945. It then summarizes the key milestones in the development of communication satellites, including early satellites launched by the US and USSR in the late 1950s, the establishment of international cooperation organizations like INTELSAT and Comsat in the 1960s, and the growth of satellite capabilities over time. The document also provides details about Bangladesh's first communication satellite, Bangabandhu Satellite-1, and describes different types of communication satellites.
Ac Circuits.pptx
This document introduces alternating current (AC), which regularly changes direction unlike direct current (DC). It defines key terms used to describe AC quantities like amplitude, time period, frequency, instantaneous value, and angular frequency. It also provides an example problem calculating the maximum value, frequency, time period, and instantaneous value of a given sinusoidal current. Finally, it discusses average value and instantaneous and average power of AC circuits.
More Related Content
Similar to dc generator class 3-6.pptx
Inducción electromagnética
The document discusses Faraday's law of induction and electromagnetic induction. It provides an example of calculating the magnetic flux through a planar area. It then analyzes the example, finding the induced EMF and induced current in the circuit. It explains that if the coil was made of an insulating material instead, the induced EMF would remain the same but the induced current would be lower due to the higher resistance.
Transformer
construction of transformer , core , winding , theory of operation , equivalent circuit of transformer,emf equation of transformer,type of transformer
Electromagnetic induction and transformer
Electromagnetic induction occurs when a changing magnetic field induces a current in a conductor. Magnetic flux is the measure of the magnetic field passing through an area. Faraday's law states that an electromotive force (EMF) is induced in a conductor when there is a change in magnetic flux over time. Transformers use this principle to change voltage levels using a primary and secondary coil wound around an iron core. Lenz's law describes how the induced current will flow in a direction that creates an opposing magnetic field to the changing field that created it.
Chapter1 part1
This document discusses magnetic circuits and electromagnetic induction. It covers topics such as magnetic fields, flux, reluctance, magnetomotive force, self and mutual inductance. Key points include:
- Magnetic fields are fundamental to energy conversion in electrical machines.
- Magnetic flux passes through magnetic materials, forming closed loops.
- Electromagnetic induction causes an induced emf when magnetic flux through a coil changes.
- Self and mutual inductance describe the relationship between current, flux linkage, and induced emf in coils.
9780750687478.pdf
This chapter discusses a.c. circuits containing resistors, inductors, and capacitors connected in series. It introduces the concepts of reactance and impedance to analyze simple a.c. series circuits. The key learning outcomes are to understand phasor and waveform diagrams for resistance, inductance, and capacitance, and analyze circuits using impedance and power triangles. The chapter also covers power dissipation calculations and introduces the concept of series resonance.
Arpita nandi
The document is a physics project report submitted by Arpita Nandi to her teacher Akash Baidya. In the acknowledgement, Arpita thanks Akash for his guidance and for providing an interesting physics project topic. She conducted an experiment to study how the self-inductance of a coil depends on various factors. The experiment involved measuring current and bulb brightness in a circuit containing a coil at different frequencies both with and without an iron core inside the coil. Arpita concluded that self-inductance increases when an iron core is inserted or frequency is decreased.
Transformer wikipedia, the free encyclopedia
The document summarizes key aspects of transformers:
1. Transformers transfer energy through inductive coupling between winding circuits, with a varying current in the primary winding creating a varying magnetic flux that induces a voltage in the secondary winding.
2. Transformers range in size from small units in microphones to large units connecting power grids. They are essential for transmission, distribution and use of electrical energy.
3. An ideal transformer induces a secondary voltage proportionate to the primary voltage and winding turn ratios, with no losses. Real transformers have additional factors like core losses, winding impedances and leakage flux.
Transformer wikipedia, the free encyclopedia
The document summarizes key information about transformers:
- Transformers transfer energy through inductive coupling between winding circuits. A changing current in the primary winding creates a changing magnetic field that induces a voltage in the secondary winding.
- Transformers come in various sizes, from thumb-sized to units weighing hundreds of tons used in power grids. They are essential for transmitting, distributing, and utilizing electrical energy.
- An ideal transformer transfers power without losses according to turns ratio. Real transformers have losses from winding resistance, leakage flux, and magnetic core properties like hysteresis and eddy currents.
Transformer
This document discusses the construction and working of transformers. It begins with an introduction that defines a transformer as a device that changes AC electric power at one voltage level to another through magnetic coupling of two coils. It then covers the main topics of the structure and working principle of transformers, the different types of constructions including core and shell types, losses in transformers including copper, hysteresis and eddy current losses, the differences between ideal and practical transformers, and applications such as in transmission and distribution of power.
Generator ppt 1
The document discusses direct current (DC) machines and their operation. It provides details on:
1) The basic components and construction of a DC machine including its armature winding, commutator, and field poles.
2) How an alternating current induced in the armature coils is converted to direct current via the commutator and brush assembly.
3) Different types of armature windings including lap and wave windings.
4) Factors that affect the performance of DC machines such as armature reaction and how it can be mitigated through techniques like using interpoles.
5) Equations for calculating the generated electromotive force (EMF) in a DC generator.
6 faradays law
Faraday's law of induction states that a changing magnetic field induces an electromotive force (emf) in a nearby conductor. Michael Faraday discovered this phenomenon through experiments in 1831. Specifically, he found that moving a magnet toward or away from a coil of wire induces a temporary current in the coil. This led to the development of Faraday's law, which describes the relationship between the induced emf and the rate of change of the magnetic flux through a circuit. Applications of Faraday's law include electric generators, motors, and eddy current brakes.
electromagnetic induction
- Electromagnetic induction occurs when a changing magnetic field induces an electromotive force (emf) in a conductor. This induced emf can drive an electric current.
- Faraday's law of induction states that the induced emf in a coil is proportional to the rate of change of the magnetic flux through the coil. A changing magnetic field is necessary to induce an emf and current.
- Lenz's law describes the direction of the induced current: the current will flow in the direction that opposes the change producing it. This ensures the law of conservation of energy is obeyed.
- Transformers take advantage of electromagnetic induction to change the voltage of an alternating current (AC) while transmitting power efficiently over
Ferroresonance Conditions in Wind Parks
Wind parks are made up of a large number of
saturable inductances (power transformers, inductive voltage
transformers (IVTs)), as well as capacitors (cables, wind turbine
harmonic filters, capacitor voltage transformers (CVTs), voltage
grading capacitors in circuit-breakers). Therefore, they may
present scenarios in which ferroresonance occurs. This paper
presents the scenarios that can lead to ferroresonant circuits in
doubly fed induction generator (DFIG) based wind parks.
Full transformer
here all MAJOR TOPICS OF TRANSFORMER IS MAINTAIN & WHICH HELPFULL FOR REVISION AND LEANING AND TEACHING
Transformers
This document provides an overview of Chapter Two of a textbook on transformers. It covers:
- The basic principles of transformer operation and types of transformers.
- Equivalent circuits used to model transformers and how to determine component values through open and short circuit tests.
- Voltage regulation in transformers and how it is calculated using phasor diagrams.
- Other topics covered include parallel operation of transformers, three-phase transformer connections, and inrush current.
Lecture 7 bee
This document discusses mutually induced electromotive force (EMF) and its coefficient of mutual induction. It begins by describing two coils, A and C, placed side by side, where changing the current in coil A using a battery, switch, and resistor induces an EMF in coil C that is detected by a galvanometer. It then explains that the magnitude of the mutually induced EMF in coil C depends on the rate of change of the flux produced by coil A that is linked with coil C. This flux-linkage is quantified by the coefficient of mutual induction M, which equals the flux linkages in one coil per ampere of current in the other coil. Finally, it describes that the coefficient of mutual
Two marks
1. The document provides information about transformers, including definitions, parts, principles of operation, and applications. It contains questions and answers on topics like transformer ratings, losses, efficiency, and classifications.
2. Transformers work on the principle of mutual induction to transform voltage from one alternating current circuit to another without changing frequency. The main parts are the primary and secondary windings and the magnetic core.
3. Transformers are used in power generation, transmission and distribution to step up or step down voltages for efficient transmission or use by customers.
RGPV BE 104 Unit II
This document provides information about magnetic circuits, transformers, and their components. It begins with reviewing laws of magnetism, flux, and their relationship. It then discusses analysis of magnetic circuits and single phase transformers. The document outlines basic concepts and construction features of transformers, including voltage and current transformation, equivalent circuits, and transformer tests.
Electrical Technology by nanajee
In this material, the contents description is very simple and neat manner. The students will easy to understand.
Transformer construction,types and working
this is good for electrical engineering students to present seminar in your college or university....
Similar to dc generator class 3-6.pptx (20)
More from 17111ASIFNOORJAMEE
Lecture 01.pptx
This document provides an overview of satellite communication principles and the evolution of communication satellites. It discusses how Arthur C. Clarke first conceived of the idea of communication satellites in geostationary orbits in 1945. It then summarizes the key milestones in the development of communication satellites, including early satellites launched by the US and USSR in the late 1950s, the establishment of international cooperation organizations like INTELSAT and Comsat in the 1960s, and the growth of satellite capabilities over time. The document also provides details about Bangladesh's first communication satellite, Bangabandhu Satellite-1, and describes different types of communication satellites.
Ac Circuits.pptx
This document introduces alternating current (AC), which regularly changes direction unlike direct current (DC). It defines key terms used to describe AC quantities like amplitude, time period, frequency, instantaneous value, and angular frequency. It also provides an example problem calculating the maximum value, frequency, time period, and instantaneous value of a given sinusoidal current. Finally, it discusses average value and instantaneous and average power of AC circuits.
ac slides type 2.pdf
1. The document provides a syllabus for RMS and average values, steady state analysis of RLC circuits with sinusoidal excitation, self and mutual inductances, and resonance in series and parallel circuits.
2. Key concepts covered include RMS and average values, form factors, steady state analysis using phasors, self and mutual inductances, dot convention, bandwidth and Q factor.
3. Example calculations are provided for average value, RMS value, form factor, and peak factor of different waveforms.
ac slides type 1.pdf
1. The document discusses AC circuits and components including inductors, capacitors, resistors, and transformers.
2. Key concepts covered include inductive and capacitive reactance, impedance, phase relationships between voltage and current, and calculations of effective voltage and current.
3. Transformers can be used to step up or down voltages in an AC circuit by changing the ratio of turns in the primary and secondary coils. An ideal transformer does not lose energy.
binarycodes.pdf
1) Binary codes represent numbers, letters, and other data using groups of bits or symbols. Weighted binary codes follow a positional weighting principle where each bit position represents a specific weight.
2) Non-weighted codes like excess-3 code and Gray code do not assign positional weights. Gray code is used in shaft position encoders to prevent multiple bit changes that can cause problems.
3) BCD (binary coded decimal) represents each decimal digit with a 4-bit binary number, allowing representation of numbers from 0-9. BCD addition can result in numbers outside the valid 0-9 range, requiring carries between digits.
digital-180612132737.pdf
The document discusses different number systems and digital coding techniques. It describes the decimal, binary, octal and hexadecimal number systems. Conversion methods between these systems are provided, including complement representations. Common codes like binary coded decimal, excess-3, and gray codes are defined along with their properties. NAND and NOR gates are identified as universal gates that can be used to implement any logical function. Methods for constructing common logic gates using only NAND gates are presented.
presentation1-200823160102.pdf
The document discusses number base conversions between binary, decimal, octal, and hexadecimal number systems. It provides examples and steps for converting between these different number systems. Conversions include changing the integral and fractional parts of decimal numbers, grouping bits into the correct number of bits for the target base, and multiplying/dividing by the place value of each position.
class 5.pptx
The document discusses iron loss in the armature of a DC machine. It explains that hysteresis loss occurs in the armature core due to magnetic field reversal as it passes under poles of different polarity. It also explains that eddy current loss is the power loss from eddy currents induced in the armature core by the magnetic field as the armature rotates. The maximum efficiency condition for a DC machine is also mentioned.
dc generator class 2.pptx
The document discusses the construction and working principles of a simple DC generator. It explains that a rotating coil inside a magnetic field will generate an alternating current in the coil. To make the output current unidirectional, slip rings are replaced with a split-ring commutator. The commutator has two segments that are insulated from each other and connected to the coil ends. As the coil rotates, the commutator reverses the direction of the current flow, rectifying it to produce a unidirectional current in the external circuit. An actual DC generator consists of additional key components like magnetic poles, field coils, an armature core and windings, commutator, and brushes to generate a steady direct
dc generator class 1.pptx
There are two types of generators: DC generators and AC generators. Both work on the principle of Faraday's laws of electromagnetic induction to convert mechanical energy into electrical energy. DC generators produce direct current, while AC generators produce alternating current. The generator consists of a coil of wire placed in a changing magnetic field. According to Faraday's laws, any change in the magnetic flux through the coil will induce an electromotive force (emf) in the coil.
NLOS UV communication using serial relay.pptx
This document summarizes the performance analysis of non-line-of-sight (NLOS) ultraviolet (UV) communication using serial relay. It discusses how using relays can help overcome challenges of NLOS communication such as high path loss, low signal-to-noise ratio, and limited range. It presents the system model, analyzes path loss, received power, SNR, outage probability, and bit error rate with different numbers of relays. Simulation results show that using relays can enhance signal strength and reduce attenuation effects compared to NLOS without relays. The analysis demonstrates relays improve feasibility and performance of NLOS UV communication.
More from 17111ASIFNOORJAMEE (11)
Recently uploaded
Gas agency management system project report.pdf
The project entitled "Gas Agency" is done to make the manual process easier by making it a computerized system for billing and maintaining stock. The Gas Agencies get the order request through phone calls or by personal from their customers and deliver the gas cylinders to their address based on their demand and previous delivery date. This process is made computerized and the customer's name, address and stock details are stored in a database. Based on this the billing for a customer is made simple and easier, since a customer order for gas can be accepted only after completing a certain period from the previous delivery. This can be calculated and billed easily through this. There are two types of delivery like domestic purpose use delivery and commercial purpose use delivery. The bill rate and capacity differs for both. This can be easily maintained and charged accordingly.
SCALING OF MOS CIRCUITS m .pptx
this ppt explains about scaling parameters of the mosfet it is basically vlsi subject
2008 BUILDING CONSTRUCTION Illustrated - Ching Chapter 02 The Building.pdf
2008 BUILDING CONSTRUCTION Illustrated - Ching Chapter 02 The Building
LLM Fine Tuning with QLoRA Cassandra Lunch 4, presented by Anant
Slides for the 4th Presentation on LLM Fine-Tuning with QLoRA Presented by Anant, featuring DataStax Astra
Rainfall intensity duration frequency curve statistical analysis and modeling...
Using data from 41 years in Patna’ India’ the study’s goal is to analyze the trends of how often it rains on a weekly, seasonal, and annual basis (1981−2020). First, utilizing the intensity-duration-frequency (IDF) curve and the relationship by statistically analyzing rainfall’ the historical rainfall data set for Patna’ India’ during a 41 year period (1981−2020), was evaluated for its quality. Changes in the hydrologic cycle as a result of increased greenhouse gas emissions are expected to induce variations in the intensity, length, and frequency of precipitation events. One strategy to lessen vulnerability is to quantify probable changes and adapt to them. Techniques such as log-normal, normal, and Gumbel are used (EV-I). Distributions were created with durations of 1, 2, 3, 6, and 24 h and return times of 2, 5, 10, 25, and 100 years. There were also mathematical correlations discovered between rainfall and recurrence interval.
Findings: Based on findings, the Gumbel approach produced the highest intensity values, whereas the other approaches produced values that were close to each other. The data indicates that 461.9 mm of rain fell during the monsoon season’s 301st week. However, it was found that the 29th week had the greatest average rainfall, 92.6 mm. With 952.6 mm on average, the monsoon season saw the highest rainfall. Calculations revealed that the yearly rainfall averaged 1171.1 mm. Using Weibull’s method, the study was subsequently expanded to examine rainfall distribution at different recurrence intervals of 2, 5, 10, and 25 years. Rainfall and recurrence interval mathematical correlations were also developed. Further regression analysis revealed that short wave irrigation, wind direction, wind speed, pressure, relative humidity, and temperature all had a substantial influence on rainfall.
Originality and value: The results of the rainfall IDF curves can provide useful information to policymakers in making appropriate decisions in managing and minimizing floods in the study area.
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
Embedded machine learning-based road conditions and driving behavior monitoring
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
Null Bangalore | Pentesters Approach to AWS IAM
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
Comparative analysis between traditional aquaponics and reconstructed aquapon...
The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
Generative AI Use cases applications solutions and implementation.pdf
Generative AI solutions encompass a range of capabilities from content creation to complex problem-solving across industries. Implementing generative AI involves identifying specific business needs, developing tailored AI models using techniques like GANs and VAEs, and integrating these models into existing workflows. Data quality and continuous model refinement are crucial for effective implementation. Businesses must also consider ethical implications and ensure transparency in AI decision-making. Generative AI's implementation aims to enhance efficiency, creativity, and innovation by leveraging autonomous generation and sophisticated learning algorithms to meet diverse business challenges.
https://www.leewayhertz.com/generative-ai-use-cases-and-applications/
AI for Legal Research with applications, tools
AI applications in legal research include rapid document analysis, case law review, and statute interpretation. AI-powered tools can sift through vast legal databases to find relevant precedents and citations, enhancing research accuracy and speed. They assist in legal writing by drafting and proofreading documents. Predictive analytics help foresee case outcomes based on historical data, aiding in strategic decision-making. AI also automates routine tasks like contract review and due diligence, freeing up lawyers to focus on complex legal issues. These applications make legal research more efficient, cost-effective, and accessible.
一比一原版(CalArts毕业证)加利福尼亚艺术学院毕业证如何办理
CalArts毕业证学历书【微信95270640】CalArts毕业证’圣力嘉学院毕业证《Q微信95270640》办理CalArts毕业证√文凭学历制作{CalArts文凭}购买学历学位证书本科硕士,CalArts毕业证学历学位证【实体公司】办毕业证、成绩单、学历认证、学位证、文凭认证、办留信网认证、（网上可查，实体公司，专业可靠）
(诚招代理)办理国外高校毕业证成绩单文凭学位证,真实使馆公证（留学回国人员证明）真实留信网认证国外学历学位认证雅思代考国外学校代申请名校保录开请假条改GPA改成绩ID卡
1.高仿业务:【本科硕士】毕业证,成绩单（GPA修改）,学历认证（教育部认证）,大学Offer,,ID,留信认证,使馆认证,雅思,语言证书等高仿类证书；
2.认证服务: 学历认证（教育部认证）,大使馆认证（回国人员证明）,留信认证（可查有编号证书）,大学保录取,雅思保分成绩单。
3.技术服务：钢印水印烫金激光防伪凹凸版设计印刷激凸温感光标底纹镭射速度快。
办理加利福尼亚艺术学院加利福尼亚艺术学院毕业证文凭证书流程：
1客户提供办理信息：姓名生日专业学位毕业时间等（如信息不确定可以咨询顾问：我们有专业老师帮你查询）；
2开始安排制作毕业证成绩单电子图；
3毕业证成绩单电子版做好以后发送给您确认；
4毕业证成绩单电子版您确认信息无误之后安排制作成品；
5成品做好拍照或者视频给您确认；
6快递给客户（国内顺丰国外DHLUPS等快读邮寄）
-办理真实使馆公证（即留学回国人员证明）
-办理各国各大学文凭（世界名校一对一专业服务,可全程监控跟踪进度）
-全套服务：毕业证成绩单真实使馆公证真实教育部认证。让您回国发展信心十足！
（详情请加一下 文凭顾问+微信:95270640）欢迎咨询！子小伍玩小伍比山娃小一岁虎头虎脑的很霸气父亲让山娃跟小伍去夏令营听课山娃很高兴夏令营就设在附近一所小学山娃发现那所小学比自己的学校更大更美操场上还铺有塑胶跑道呢里面很多小朋友一班一班的快快乐乐原来城里娃都藏这儿来了怪不得平时见不到他们山娃恍然大悟起来吹拉弹唱琴棋书画山娃都不懂却什么都想学山娃怨自己太笨什么都不会斟酌再三山娃终于选定了学美术当听说每月要交元时父亲犹豫了山娃也说爸算了吧咱学校一学期才转
Advanced control scheme of doubly fed induction generator for wind turbine us...
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
VARIABLE FREQUENCY DRIVE. VFDs are widely used in industrial applications for...
Variable frequency drive .A Variable Frequency Drive (VFD) is an electronic device used to control the speed and torque of an electric motor by varying the frequency and voltage of its power supply. VFDs are widely used in industrial applications for motor control, providing significant energy savings and precise motor operation.
Data Driven Maintenance | UReason Webinar
Discover the latest insights on Data Driven Maintenance with our comprehensive webinar presentation. Learn about traditional maintenance challenges, the right approach to utilizing data, and the benefits of adopting a Data Driven Maintenance strategy. Explore real-world examples, industry best practices, and innovative solutions like FMECA and the D3M model. This presentation, led by expert Jules Oudmans, is essential for asset owners looking to optimize their maintenance processes and leverage digital technologies for improved efficiency and performance. Download now to stay ahead in the evolving maintenance landscape.
Recently uploaded (20)
2008 BUILDING CONSTRUCTION Illustrated - Ching Chapter 02 The Building.pdf
2008 BUILDING CONSTRUCTION Illustrated - Ching Chapter 02 The Building.pdf
LLM Fine Tuning with QLoRA Cassandra Lunch 4, presented by Anant
LLM Fine Tuning with QLoRA Cassandra Lunch 4, presented by Anant
4. Mosca vol I -Fisica-Tipler-5ta-Edicion-Vol-1.pdf
4. Mosca vol I -Fisica-Tipler-5ta-Edicion-Vol-1.pdf
Rainfall intensity duration frequency curve statistical analysis and modeling...
Rainfall intensity duration frequency curve statistical analysis and modeling...
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
Embedded machine learning-based road conditions and driving behavior monitoring
Embedded machine learning-based road conditions and driving behavior monitoring
Comparative analysis between traditional aquaponics and reconstructed aquapon...
Comparative analysis between traditional aquaponics and reconstructed aquapon...
Generative AI Use cases applications solutions and implementation.pdf
Generative AI Use cases applications solutions and implementation.pdf
Advanced control scheme of doubly fed induction generator for wind turbine us...
Advanced control scheme of doubly fed induction generator for wind turbine us...
VARIABLE FREQUENCY DRIVE. VFDs are widely used in industrial applications for...
VARIABLE FREQUENCY DRIVE. VFDs are widely used in industrial applications for...
dc generator class 3-6.pptx
- 1. EECE 269 : Electrical Drivers and Instrumentation Ref Book : A Textbook of Electrical Technology by B.L Theraja CLASS 3-6 Asif Noor Jamee Lecturer EECE Dept, BMA 1
- 2. Lap & Wave Winding Lap winding : The one end of the armature coil is connected to the one segment of the commutator and the second end of the first coil and first end of the second coil are placed on the same segment of the commutator. 2
- 3. 3 Wave winding : In wave winding, one end of the first armature coil is connected to the starting end of the second coil, and which have the same polarity. In wave winding, winding is connected to wave shape, so these windings are called wave windings.
- 4. 4
- 5. 5
- 6. 6
- 7. 7
- 8. 8
- 9. 9
- 10. 10
- 11. 11 Example 26.5. A short-shunt compound generator delivers a load current of 30 A at 220 V, and has armature, series-field and shunt-field resistances of 0.05 Ω, 0.30 Ω and 200 Ω respectively. Calculate the induced e.m.f. and the armature current. Allow 1.0 V per brush for contact drop
- 12. 12
- 13. 13
- 14. 14
- 15. 15 Generated E.M.F. or E.M.F. Equation of a Generator d dt 60 PN d dt Please see in your notes for better understanding
- 16. 16
- 17. 17
- 18. 18
- 19. 19
- 20. 20
- 21. 21
- 22. 22
- 23. 23 Answer: Please see your note
- 24. 24
- 25. 25
- 26. 26
- 27. 27
- 28. 28 Example 26.12. A separately excited generator, when running at 1000 r.p.m. supplied 200 A at 125 V. What will be the load current when the speed drops to 800 r.p.m. If If is unchanged ? Given that the armature resistance = 0.04 ohm and brush drop = 2 V
- 29. 29 Please see in your notes for an alternate way of finding the new load current
- 30. 30 CT 1 SYLLABUS : UP TO THIS LECTURE ASSIGNMENT ALL THE MATH OF THIS SLIDE
- 31. 31