1) Charge is the electrical property of atomic particles that composes matter. It can be negative or positive and is measured in coulombs.
2) Current is the flow of charge or electrons through a conducting material. It is measured in amperes.
3) Alternating current periodically changes its magnitude and direction, unlike direct current which flows in only one direction. It is the type of electric current used in power grids and appliances.
Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction.
Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction.
Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction.
Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction.
Electrostatic potential and capacitanceEdigniteNGO
Hello everyone, we are from Edignite NGO and we have come up with chapters of class 11 and 12 (CBSE).
For any queries, please contact
Lekha Periwal : +916290889619
Heer Mehta : +917984844099
2017 Some basic conceptions and misconceptions in electrical engineeringG Karthik Raja
In this presentation, I discuss some basic concepts in electrical engineering that are not well known to students like the concept of Live, Neutral and Earth wiring; Active, Reactive and Apparent power and Foundation of 3-phase system. I have brought in a new perspective to understand these concepts. I also discuss some misconceptions that students face and resolve it the right way.
this contant is physics related.Here AC current explain on the purpose of presentation with some equation and circuit diagram.i thaink it wiil be very effective for the students.
this ppt was created by me and i hope it helps to all of you out there. peace
objective : school projects
personal reference
teachers reference
i know its a bit lengthy but im 100% sure it will be helpful
plz leave a like
thxs
Electrostatic potential and capacitanceEdigniteNGO
Hello everyone, we are from Edignite NGO and we have come up with chapters of class 11 and 12 (CBSE).
For any queries, please contact
Lekha Periwal : +916290889619
Heer Mehta : +917984844099
2017 Some basic conceptions and misconceptions in electrical engineeringG Karthik Raja
In this presentation, I discuss some basic concepts in electrical engineering that are not well known to students like the concept of Live, Neutral and Earth wiring; Active, Reactive and Apparent power and Foundation of 3-phase system. I have brought in a new perspective to understand these concepts. I also discuss some misconceptions that students face and resolve it the right way.
this contant is physics related.Here AC current explain on the purpose of presentation with some equation and circuit diagram.i thaink it wiil be very effective for the students.
this ppt was created by me and i hope it helps to all of you out there. peace
objective : school projects
personal reference
teachers reference
i know its a bit lengthy but im 100% sure it will be helpful
plz leave a like
thxs
Ekeeda Provides Online Video Lectures, Tutorials & Engineering Courses Available for Top-Tier Universities in India. Lectures from Highly Trained & Experienced Faculty!
Ekeeda - First Year Enginering - Basic Electrical EngineeringEkeedaPvtLtd
The First Year engineering course seems more like an extension of the subjects that students have learned in their 12th class. Subjects like Engineering Physics, Chemistry, and Mathematics, are incorporated into the curriculum. Students will learn about some of the engineering subjects in this first year, and these subjects are similar to all the branches. Everyone will learn some basics related to the other streams in their first year. Ekeeda offers Online First Year Engineering Courses for all the Subjects as per the Syllabus.
NETWORK ANALYSIS PART 3 For GATE IES PSU -2020 RRB/SSC AE JE TECHNICAL INT...Prasant Kumar
for youtube video visit link
https://youtu.be/eq5UnA1e17E
Single phase AC circuits is most basic and important portion topic for GATE,IES,PSU,SSC,and different state level examinations.which covers following topics.1-Phase AC Circuits,AC & DC SIGNALS,Differentiate AC vs DC signal,PROPERTIES OF AC SIGNALS,peak value and peak to peak value,average value,R.M.S. value,instantaneous value,form factor,peak factor,WAVEFORM ANALYSIS OF AC SIGNAL,advantages of sinusoidal waveform,cycle, time periods and frequency,Phasor,Differentiate between Active, Reactive and Apparent Power,power triangle ,MCQ FOR PRACTICES,unilateral circuit ,bilateral circuit , irreversible circuit , reversible circuit series with each other , parallel with each other , series with the voltage source., parallel with the voltage source ,linear network , non-linear network , passive network , active network
# Previous videos in channel for learning
https://youtu.be/NSdIbrxIE74
# Network Analysis Part 1
https://youtu.be/UWSHxL8Daro
# Network Analysis Part 2
https://youtu.be/fPzCrnBlsIA
AC motors Comparision
https://youtu.be/Nwo8IfNdQZA
Wound Rotor and squirrel cage rotor
https://youtu.be/Y_WoddRiVSE
What is electrical Machine
https://youtu.be/N4xWOwgi8I4
Overview of Power plants
https://youtu.be/kPWElNXvxGs
How to Study for success
https://youtu.be/A_L1lI3zOsc
Why unemployment of Indian engineers
https://youtu.be/pdLe1Z4RRGs
Why I do engineering
https://youtu.be/DTtRl1t2DaM
Generator electricals for slideshare (wecompress.com)David P
Generator or Genset electrical components
Generator electrical calculations
Generator type of loads
what is power factor & how it affects the Generator performance
Generator load calculations
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-Engineering
Current Electricity and Effects of CurrentOleepari
Electric current, potential difference and electric current. Ohm’s law; Resistance, Resistivity,
Factors on which the resistance of a conductor depends. Series combination of resistors,
parallel combination of resistors and its applications in daily life. Heating effect of electric
current and its applications in daily life. Electric power, Interrelation between P, V, I and R
Current and Electricity for class 10.pdfJackHassan2
Download our comprehensive Class 10 Current and Electricity PDF guide to master the fundamentals of electrical circuits, current flow, and key concepts in this critical science topic. This PDF provides clear explanations, diagrams, and practice questions to enhance your understanding and preparation. Covering the essential curriculum, it's an invaluable resource for students aiming for excellence in their science studies.
Current and Electricity for class 10.pdfJackHassan2
Download our comprehensive Class 10 Current and Electricity PDF guide to master the fundamentals of electrical circuits, current flow, and key concepts in this critical science topic. This PDF provides clear explanations, diagrams, and practice questions to enhance your understanding and preparation. Covering the essential curriculum, it's an invaluable resource for students aiming for excellence in their science studies.
Alternating current signal
AC means Alternating Current and DC means Direct Current. AC and DC are also used when referring to voltages and electrical signals which are not currents! For example: a 12V AC power supply has an alternating voltage (which will make an alternating current flow).
Similar to Short question on basic elelctrical (20)
Online aptitude test management system project report.pdfKamal Acharya
The purpose of on-line aptitude test system is to take online test in an efficient manner and no time wasting for checking the paper. The main objective of on-line aptitude test system is to efficiently evaluate the candidate thoroughly through a fully automated system that not only saves lot of time but also gives fast results. For students they give papers according to their convenience and time and there is no need of using extra thing like paper, pen etc. This can be used in educational institutions as well as in corporate world. Can be used anywhere any time as it is a web based application (user Location doesn’t matter). No restriction that examiner has to be present when the candidate takes the test.
Every time when lecturers/professors need to conduct examinations they have to sit down think about the questions and then create a whole new set of questions for each and every exam. In some cases the professor may want to give an open book online exam that is the student can take the exam any time anywhere, but the student might have to answer the questions in a limited time period. The professor may want to change the sequence of questions for every student. The problem that a student has is whenever a date for the exam is declared the student has to take it and there is no way he can take it at some other time. This project will create an interface for the examiner to create and store questions in a repository. It will also create an interface for the student to take examinations at his convenience and the questions and/or exams may be timed. Thereby creating an application which can be used by examiners and examinee’s simultaneously.
Examination System is very useful for Teachers/Professors. As in the teaching profession, you are responsible for writing question papers. In the conventional method, you write the question paper on paper, keep question papers separate from answers and all this information you have to keep in a locker to avoid unauthorized access. Using the Examination System you can create a question paper and everything will be written to a single exam file in encrypted format. You can set the General and Administrator password to avoid unauthorized access to your question paper. Every time you start the examination, the program shuffles all the questions and selects them randomly from the database, which reduces the chances of memorizing the questions.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
TOP 10 B TECH COLLEGES IN JAIPUR 2024.pptxnikitacareer3
Looking for the best engineering colleges in Jaipur for 2024?
Check out our list of the top 10 B.Tech colleges to help you make the right choice for your future career!
1) MNIT
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TO KNOW MORE ABOUT COLLEGES, FEES AND PLACEMENT, WATCH THE FULL VIDEO GIVEN BELOW ON "TOP 10 B TECH COLLEGES IN JAIPUR"
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Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
2. Que-What is Charge ?
The electrical property of atomic
particles which a matter composed of is
called charge
Charge may be (-)negative or (+)
positive. It is measured in Coulombs (C)
and donated by q. An electron is
negatively charged and contains a
1.602X10ˆ(-19)
3. Que- What Is Current ?
Flow of charge or electrons through a
conducting material is called electric
current .
It is measured in Ampere(A) and
denoted by I
I= q/t
4. Que- Define Alternating current
Alternating current is that type of
electric current, which changes it’s
magnitude and direction periodically.
5. Que- What is cycle?
One complete set of changes in value and
direction of alternating quantity and emf
or current is called a cycle.
6. Que-What is periodic time?
Periodic time is the time taken to
complete on cycle. Its symbol is ‘T’. For
example
Indian standard frequency is 50 cycles
per second. So the periodic time T =
1/50
seconds. That is equal to 20 m seconds.
7. Que- What is frequency?
Number of cycles per second is called
frequency.
8. Que-What is amplitude value or
peak value?
It is the maximum value of an
alternating quantity that can be
obtained in any one direction.
.
9. Que- What is instantaneous
value?
The value of an alternating quantity at a
particular instant is called instantaneous
value
10. Que-What is average value or
mean value?
Average of all instantaneous values of
emf or current over a half cycle is known
as average value or mean value.
Average value = 0.637 * Emax or Imax
11. Que- What is root mean square
value (R.M.S)?
The R.M.S value is also known as effective
value or virtual value. The instantaneous
value of both the directions will all be
squared up and will be added together.
Then divide to get the average with the
number of instantaneous values and find
the square root of this average to calculate
the R.M.S value of the emf or current.
12. Que-How to calculate R.M.S
value for AC Current?
The R.M.S value of an alternating current or emf
is equal to the same value of direct current (DC),
which produces the same amount of heat with
the same time when applied the DC through the
same circuit as AC is produced.
R.M.S value = maximum value / .2 =1/.2=0.707.
.
R.M.S value or effective value = 0.707 * Emax or
Imax
13. Que- What is form factor?
The ratio of the R.M.S value to the average value is called the form
factor. .
Form factor = 0.707 * Emax
or
Imax : 0.637 * Emax
or
Imax= 0.707 * Emax
or
Imax / 0.637 * Emax
or
Imax = 1.11
So that R.M.S value = average value * 1.11
Or
average value = R.M.S value / 1.11
.
14. Que-What is crest factor or peak
factor?
The ratio of maximum value to the R.M.S
value is known as crest factor. So the
crest factor = maximum value / R.M.S
value.
= Emax or Imax / (Emax or Imax / .2)
= Emax or Imax * .2 / Emax or Imax
= .2 = 1.414
.
15. Que-What is vector quantity and
what is scalar quantity?
Vector quantity
A quantity, which has both the direction and
magnitude is said to be a vector quantity.
Examples are force, emf, current etc.
Scalar quantity
A scalar quantity is that, which has only
magnitude but no direction. Examples are
temperature, mass, volume etc.
.
16. Que-What is phase?
The development of an AC quantity
through different stages is known as
Phase. The term phase refers to the
number of separate individual voltage
setup in an AC circuit.
17. Que-What is in-phase?
When those two vectors (voltage and
current) attain (reaches) their maximum
and minimum values simultaneously (at
the same time), then those two
quantities are said in-phase. Here
between those quantities there is no
angle.
.
18. Que-What is out of phase?
When two alternating quantities voltage
and current do not reaches their
maximum and minimum values
simultaneously, then they are called out
of phase.
.
19. Que-What is phase angle?
Phase angle is an angular displacement
between two alternating quantities.
Phase angle is measured in electrical
degrees or radians.
22. Que- What is lagging quantity?
The alternating quantity that attains its
maximum value later than the other
Quantity is called the lagging quantity.
23. Que- What is the relation
between voltage and current in
AC circuit containing only
resistance?
Current (I) is in-phase with the voltage.
I = V/R amps. P = I * V * cos. or I2 R
watts. (Where cos. is zero because the
voltage and current are in-phase. So cos.
0° (zero) = 1)
24. Que- What is the relation
between voltage and current in
AC circuit containing only
inductance?
Current (I) is lags behind the voltage by
90°. I = V/XL amps. XL = 2πfL ohms. P
= I * V * cos. watts. (Where cos. is 90
because current lags behind voltage by
90°. So cos. 90° = 0) . P = I * V * 0 = 0
watts.
25. Que-What is the relation
between voltage and current in
AC circuit containing only
capacitance?
Current (I) is leading the voltage by 90°. I =
V/XC amps. XC = 1/2πfC ohms.
P = I * V * cos. watts. (Where cos. is 90
because current is leading the voltage by
90°. So cos. 90° = 0) . P = I * V * 0 = 0
watts.
26. Que- What is inductance and
inductive reactance?
Inductance
A coil carrying alternating current produces an
alternating flux, which causes to link with same
coil and produces an emf in the coil, which
opposes the applied emf. This property is known
as inductance. The unit for measurement is
henry. Inductive reactance the opposition or the
reactance offered by the property of inductance
in the circuit is known as inductive reactance
and denoted by the letter XL. The unit for
measurement is ohm.
27. Que- What is capacitance and
capacitive reactance?
Capacitance
The property of a capacitor to store
electrical energy in it, when it is connected
to an electric supply is called capacitance.
Unit for measurement is farad. Capacitor
store an electric energy in the unit of charge
and the unit of charge is coulomb. Capacitive
reactance
The opposition due to capacitance of
capacitor in an electric circuit is called
capacitive reactance and it denoted by the
letter XC. The unit for measurement is ohm.
28. Que- What is impedance?
The total opposition offered by an AC circuit for
the flow of current through it is
called Impedance. The letter ‘Z’ denotes it and
the unit is ohm.
. Z = . R2 + (XL . XC) 2, Z = . R2 + (X) 2
Where . indicates the difference of XL and XC
and denoted in the letter X (net reactance of the
AC circuit).
144. What is ohm’s law for AC circuit?
I = V/Z amps.
Z = V/I ohms.
V = I * Z volts.