Critical field circuit resistance and critical speed, Electrical Engineering

Assignment Help:

Q. Define and explain the critical field circuit resistance and critical speed of a DC shunt generator.

 

Ans. The OCC and R - line for a DC shunt generator. As, Rf is increased the line slope increases, till at critical Rf value the coincides with the linear part of OCC. At and higher than this value of Rf VOC reduces to merely the residual value (negligible), which implies that the generator fails to excite.

Also, if for fixed Rf the generator speed is reduced, at critical speed the OCC comes to a position where its linear part lies along the Rf line and the generator fails to excite.

 

 

 

 


Related Discussions:- Critical field circuit resistance and critical speed

Program counter , Program Counter (PC) It is a   16 bit  register.  It ...

Program Counter (PC) It is a   16 bit  register.  It is a memory  pointer. It stores  the memory address  of the next  byte of the program to be executed. Memory  address is of

Describe CCIT hierarchical structure, Q. Describe CCITT  hierarchical  stru...

Q. Describe CCITT  hierarchical  structure  of  switching  and  routing  using  block schematic.  Ans: Hierarchical network are capable of handling heavy traffic where req

Design the low-pass filter, Q. Design the low-pass filter shown in Figure (...

Q. Design the low-pass filter shown in Figure (by determining L) to have a half-power frequency of 10 kHz.

How many 500-page books can be stored on a 2400-ft, Q. How many 500-page bo...

Q. How many 500-page books can be stored on a 2400-ft, 1600-BPI magnetic tape if a typewritten page contains about 2500 bytes?

Benefits of digital systems, Q. Show Benefits of digital systems? Ever ...

Q. Show Benefits of digital systems? Ever since most digital systems have only two possible states, there is high degree of accuracy in the transmission of data. With an analog

Explain magnetic property of ferromagnetic materials, The critical temperat...

The critical temperature above which the ferromagnetic materials lose their magnetic property is known as (A) Hysteresis.                                   (B) Curie point.

Transistors, what is transistor how it works?

what is transistor how it works?

Band Pass active filter, How to design band pass active filer? Any software...

How to design band pass active filer? Any software avaialble

Show binary to octal conversion, Q. Show Binary to Octal Conversion? It...

Q. Show Binary to Octal Conversion? It is simple to convert from an integer binary number to octal. This is accomplished by: Break the binary number into 3-bit secti

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