Answer Posted / srinu
back emf is produced in all motors due to rotation ,motor act as generator and produce emf ,this emf is oppose the applied voltage,this is called back emf,this is directelly propostionl to rpm
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is meant by stator? What is meant by rotor?
Give some differences between open loop and closed loop?
What is gain margin?
How to calculate energy stored in an inductance?
Please explain, how to test vector group of tranformer(Delta y1) . Thank
why electronic instruments is more favorable than electrical?
why the voltage and current in a long transmission line are called travelling wave?
what is meant by 3rd hormonics ?
why we setting 95 deg and 105 deg in wti and oti of distibution transformer ? give the reson for that ?
What is the use of iron core in a transformer?
How can we calculate cable size in Low voltage & high voltage
Define what is difference between fuse and breaker?
LET ME NOW MORE ABOUT icu and ics for circuit breaker. how we calculate the rating of circuit breaker and i c u and ics values
what will happen if frequency is below 50 hz?
plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?