Answer Posted / nandan bikash sarma
when we will use ac as the exitation the direction of the
magnetic field (NORTH AND SOUTH pole) will change as the
direction of the current changes This will effect the
voltage that we getting from the alternator.So we use a dc
magnetic field
Is This Answer Correct ? | 6 Yes | 3 No |
Post New Answer View All Answers
how the inner and outer body is separated in aircrafts?
if field breaker of generator is closed prior to its rated speed on a power generating unit. what will be the effect on generator, unit transformer and starting transformer.
do we use links in a dc circuit?if so what s its use in it?
a starter used for squirrel cage induction motor?
i karmveer bharti persuing b.tech . plz send me syllabus and name of reference books. for preparation of section eng.
If short circuit ratio is high is it bad or good for a machine then tell the reason...
What is the percentage loss for aluminium wire for HT line more than 11KVa
What is warm / cold start of HT motors. How many warm start & cold start are possible in a day?
Does the motor power displayed on the Motor name plate is the mechnical power motor delivers or it is consumed power from the system?
What is a fuse? How does it work? What are materials used?
percetans
defination of controlled shunt reactor
What is Primary And Secondary Injection Test of Relay and Other Electrical Devices. How IT is carried out.
How to confirm the Phase shifting Transformer VECTOR GROUP relation , as below ZNy11.45d10.45-ZNYy0.15d11.15
what is the difference between unarmoured & Flexible cable? How to identified?