what will be happen if we apply D.C supply to the transformer

what will be happen if we apply D.C supply to the
transformer

Question Posted / muthu

14 Answers
22996 Views
CCBPL, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what will be happen if we apply D.C supply to the transformer..

Answer / deepankar

If a constant dc is
applied then primary of
transformer will burn
out.
However if a variable
dc is applied as
obtained from rectifier
without filter then it will
work in same fashion
as on ac.

Is This Answer Correct ?

0 Yes

0 No

what will be happen if we apply D.C supply to the transformer..

Answer / monalisa jena

If the primary of a transformer is connected to a d.c
supply,the primary will draw a steady current,hence
prodocue constant flux.consequently no back emf ll be
produced.The primary ll draw excessive current due to flow
of low resistance of the primary.The result is that the
primary eill overheat and burn out the transformer.

Is This Answer Correct ?

1 Yes

3 No

what will be happen if we apply D.C supply to the transformer..

Answer / samit

A transient spike will apear at secondary and then will
disapear.

Is This Answer Correct ?

10 Yes

14 No

what will be happen if we apply D.C supply to the transformer..

Answer / kishore

WHEN YOU APPLY AC SUPPLY TO TRANSFORMER AS IT FLOW
ALTERNATIVELY UP N DOWN LIKE JUMPING HENCE IT WILL JUMP
FROM PRIMARY WINDING TO SECONDARY WINDING BUT IN CASE OF DC
SUPPLY AS IT GOES IN A STRAIGHT LINE IT BANG WITH PRIMARY
WINDING LIKE A HEADON COLLISION AND BREAK IT ........

IF U GIVE THIS ANS I'M SURE U'LL QUALIFY IN ANY INTERVIEW

Is This Answer Correct ?

14 Yes

39 No

Post New Answer

More Electrical Engineering Interview Questions

SUTIABLE FOR ohm's law super conductor

0 Answers

What is partial discharge in power cable?

1 Answers

what is diff. b/w of earth & neutral?. why we are separately using ?

3 Answers

How much width of the land shall have to be left below the EHT line of 440 kv as per the rule. i am told that a corridor of 35 M width is to be left free below 220 kv line. please confirm

1 Answers

What is class X ct? What rare its uses?

2 Answers

what is the power rating of CPU, CRT type moniter, LCD type moniter,scanner Approx.

0 Answers HAL,

what r the earthing required for commissioning of D.G set?

5 Answers

Comment on the working principle of operation of a single-phase transformer.

0 Answers

In CTs tan delta point should be earthed , what is the reason behind it?

0 Answers

how to set the transformer differential relay

1 Answers Divis Laboratories,

Why charcoal and salt add in earthing pit.

6 Answers Garware, NTPC, Sterling Wilson,

i have 28/32 MVA power transformer with 11/6.6 KC voltage rating and 12%impedance.it have star connection at both side.but it have another thied winding tertiary winding.what is used of this winding. pl tell me

7 Answers

For more Electrical Engineering Interview Questions Click Here