why dc power can not be used in transformer?

Answer Posted / rajesh babu

we cant use dc power in a transformer.there are two main
reasons supporting above statement
1)there will be no action of transformer(as it works on
principle of mutual induction)
2)winding of the transformer acts as inductor&it acts as
short circuit for DC
inductive reactance XL=2*PI*F*L
DC HAS ZERO FREQUENCY so XL=0,HENCE IT ACTS AS SHORT CIRCUIT
Deu to this winding of the transformer may burns out.

Is This Answer Correct ?    10 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

being an electrical engineer why you wanna come into software i have an very good academics what answer i have to give

1490


how to CHECK CT AND PT AT THE FAULT OCCUR IN GENERATOR RELAY PANEL .

1752


How to Calculate Current Rating of SDFU (Switch Disconnector Fuse unit) for Protectionof Capacitor Bank connected to Busbar of 800Amp,in LV side of 11/0.433KV, 250KVA Transformer?

4900


by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.

1530


what is the difference between circular wdg & ractangular wdg?

1567






why sometime we get electrical shock while touching the ballon of dish tv connection ? which we should not get.

1528


what is the generator rating for 40 amp load of 3phase motor.?? 400v voltage of generator... plz tell me with formula its urgent...plzzz... and also tell me that this 40 amp at all phases mean 40 amp on red,40 amp on yellow,40 amp on blue...... or the total sum of that 3phase is 40 amp....

7150


Whether should be the oil level in OCTC transfomer? It should be upto winding immersed completely or should be upto tap changer s/w? How it will affect the performance of the transformer. Rating may be 33KVA

1411


how to calculate the conductor size for certain KV transmission line and distribution line?

2021


diff b/w normal grounding and resistance grounding

1417


define as synchronous generator

1703


We have 250 KW x 2 motors, which are load from 25% to 100% varying load in every minute , so how can we compansate the power factor. pl give your opinions on the above subject.

1427


What is the use of oil in transformers?

637


what are the difference between PLC and embedded

1654


what is a types of short circuit and what is a types of distance protection tests

1776