Why DC current is not used in transformer?
- 20 Answers
- 36963 Views
- JK Paper, TCS, I also Faced
- E-Mail Answers
Answer Posted / kamaraj
Transformer is working based on the principals of
Electromagnetic induction when A/c supply applied in the
primary wdg which induces EMF in the Secondary wdg.
While applying DC supply in the primary wdg, it will burnt
if it is Step up transformer, because it acts as Series
motor and it takes high current. and there is no back EMF
induced in the Tr sec. wdg.
| Is This Answer Correct ? | 8 Yes | 2 No |
Post New Answer View All Answers
Define piezo-electric effect?
a 100mva,400/200v transformer has leakage impdce of 10% draws a steady state line currentof---------------
how oltc works in rectiformers of higher rating (27 mva,200v dc,120kamps) please provide me full information with diaggram.
What is a dc motor?
how to design coil turns ?
What is the difference between vector surge relay (78) and Pole slip relay (98G)
what are the dimensions for 200 kva transformer plinth (plateform),in which pcc m20 is used..
Explain what is electric traction? Explain few advantages of electric traction system?
Why do we apply both Differential and REF (HV and LV) protection schemes on YNyn configuration of a transformer?
What will happen if the armature resistance is in minimum position and the field resistance is in maximum position while starting the motor
how to select the no. of brushes in a lap winding?
explain the functions of main isolation switches
If a surge divertor is required to be protected by 32 amp C Curve Circuit breaker does this limit the amount of protection from surges that you will acheive
why is the power generator connected as star earthed or star earthed through reactance and what its features ?
working principle a.v.r. ?
