Phasor diagram, Electrical Engineering

Assignment Help:

The aim of this question is to help you become familiar with phasor diagrams, and in particular to see how the diagram changes when one of the system parameters (in this case resistance) varies. The diagram (right) represents the approximate equivalent circuit of an induction motor (copper and mechanical losses are ignored, and the permeability of magnetic core is considered infinite), supplied from a constant- voltage source V of angular frequency ω. The power in the fictitious resistance R represents the power converted from electrical to mechanical form, and the value of R is a function of the speed of the motor. Sketch phasor diagrams showing the current and the voltages across R and L when a) R = 0; b) R = 0.1ωL; c) R = ωL; d) R = 10ωL. (Use the same scale for each diagram; calculate angles; and use a protractor or drawing package to produce a set of decent diagrams so that they can be compared easily.

1. You may find it useful to recall the geometrical property of a semi-circle shown in the sketch.

2. Find the value of R (in terms of ωL) that yields maximum power, and the corresponding power.

728_Phasor Diagrams.png


Related Discussions:- Phasor diagram

Classification of solids insulators semiconductor condutors, Classification...

Classification of Solids into Insulators, Semiconductor and Conductors A solid can conduct electric current if the electrons can move in it. This is possible only when an ener

Direct addressing , Direct Addressing In this  addressing  mode one  o...

Direct Addressing In this  addressing  mode one  of the  operands is the  data stored  in the memory. The memory  address of the  operand is directly  given in the instruction

Dc chooper, Establish the relationship between duty ratio and output voltag...

Establish the relationship between duty ratio and output voltage

Matlab, fast decoupled program

fast decoupled program

Calculate the unknown thermal conductivity, Derive the mathematical 3-D hea...

Derive the mathematical 3-D heat conduction equation in Spherical Coordinates? A furnace is made up of three layers of thicknesses 250 mm, 150 mm nad 100 mm with thermal conduct

Diode characteristic, Q. For the circuit shown in Figure(a), determine the ...

Q. For the circuit shown in Figure(a), determine the diode current and voltage and the power delivered by the voltage source. The diode characteristic is given in Figure.

Common-collector amplifier, A common-collector (CC) amplifier is also known...

A common-collector (CC) amplifier is also known as an emitter follower (or a voltage follower) due to the fact that the output voltage "follows" the input by being approximately eq

How 8255 programmable peripheral interface can operate, What are the differ...

What are the different modes in which 8255 Programmable Peripheral Interface (PPI) can operate? Twenty Four I/O lines in 38-bit port groups - A, B and C A and B can be

Return instructions , Return Instructions These instruction  are used ...

Return Instructions These instruction  are used to transfer the program sequence from subroutine to the  calling program. Basically  it restores the  previous  contents  of th

Find the rate of information transmission, Q. Find the rate of information ...

Q. Find the rate of information transmission? If the time occupied in transmitting each binary digit is 1 µs, find the rate of information transmission if 1 baud is equal to 1

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd