what happen when dc shunt motor field is sudden open in
running condition
Answer Posted / tommy
When field ckt is opened field current will be zero,flux
will be zero,as speed is inversly proportional to speed
becoz of zero flux motor tries to rotate at maximum
(infinite),dangerous speed .motor will be damaged(un rooted
etc..)
Is This Answer Correct ? | 18 Yes | 1 No |
Post New Answer View All Answers
If we have 11 kv RYB Phase single core cable near about. Then wht effect and losses
describe the Tranformer testing procedure
what is mean by dry frequency
what is the principle of the single phase energy meter? and,what is the advantages and disadvantages of single phase energy meter?
distribution transformer de-rating formula on over limit iron losses
WHY THE COLOR OF OUTDOOR TRANSFORMER IS BLUE ONLY???
What are dependent sources?
To make a basic instrumentation amplifier, it takes A One op-amp with a certain feedback arrangement B Two op-amp and seven resistors C Three op-amps and seven capacitors D Three op-amps and seven resistors
what is the meaning of the symbol << >> put in transformer drawing
Why did lightening arrestor solid copper rod head is sharp on mobile tower top?
TELL ME WHAT IS INDUCTOR AND CAPACITOR WHAT IS IT BASIC OPERATION ANDFUNCTION?
why +24 v and -48 v give to BTS? If -48v protect from surge then why we not use -24 v?
I am going to appear for the RRB Chennai Section Engineer online exam. Please send me the question papers from 2001 to date to my mail id:upendrakrishna20@gmail.com,plz send me ,or send any other rrb papers plzzzzzzzzzzzzzzzzzz
what's the difference between abs/inc encoders. apart from the position remembrance what are all the other differences. and what's mean by grey code.
at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds