A synchronous motor with a synchronous reactance , Electrical Engineering

Assignment Help:

A synchronous motor with a synchronous reactance of 12 ohms is operating with a current of 100 A at unity power factor supplying power to a large compressor. The phasor diagram for this operating condition is shown in the figure.

2242_Syncronysing monitor1.png

a) The field current is to be adjusted to bring the machine to a new operating point having 60 A of leading current and, since no change is to be made to the compressor, the power input and the100 A of in phase current will remain the same. Sketch the new phasor diagram for this condition on the diagram below, clearly showing the location of the tip of the new I and the tip of the new E.

1373_Syncronysing monitor.png

b) Based on your phasor diagram, find the new values for the amplitudes of the current I and the internal voltage E.

c) With the machine running as in the original phasor diagram, what will be the current and power factor if the compressor load is reduced to zero without any change in the field current? Sketch a phasor diagram for this condition.


Related Discussions:- A synchronous motor with a synchronous reactance

Electrical machine, transformer voltage induced in armatur of ac commentato...

transformer voltage induced in armatur of ac commentator machin in case tha field flux in sinosoidal?..

Public safety - application of software defined radio, Public safety - Appl...

Public safety - Application of Software Defined Radio During emergency situation such as earthquake, tsunami, terrorist attack, public safety officials from different agencies

How is 8255 (programmable peripheral interface) configured, How is 8255 (Pr...

How is 8255 (Programmable Peripheral Interface) configured if its control register contains 9B h. Ans. Programmable Peripheral Interface Command Byte B (sets or

General purpose diodes - types of power diodes , General Purpose Diodes ...

General Purpose Diodes The  general purpose  diodes  have relatively high reverse recovery time. The  diodes are general  made  by diffusion. They  are used  in low  speed  app

Factors affecting to high technical losses, Factors Affecting to High Techn...

Factors Affecting to High Technical Losses Large Scale Rural Electrification Large scale rural electrification programmed undertaken in the country resulted in long LT li

Draw an electrical relay diagram, Draw an electrical relay diagram rung sho...

Draw an electrical relay diagram rung showing a N/O contact of CR1(coil) in series witha N/C contact of CR2(Coil), operating a lamp L1. A delay-on (TON) relay has a preset of 5.

Determine potential drop between the terminals of a battery, The potential ...

The potential drop between the terminals of a battery is equal to the battery's EMF when: a) No current is drawn from the battery b) A very large current is drawn from th

Which realization requires the least number of gates, Q. Consider a 1-bit v...

Q. Consider a 1-bit version of the digital comparator shown in Figure. Note that the operation of this circuit is such that whichever output is 1 gives the desired magnitude compar

What are the different functional units in 8086, Bus Interface Unit and imp...

Bus Interface Unit and implementation unit, are the two dissimilar functional units in 8086.

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