1. If we apply dc supply to the primary winding of transformer it will be bur

1. If we apply dc supply to the
primary winding
of transformer it will be burnt out.
similarly dc
supply is given to field winding of
syn. motor
and armature winding of dc motor,
they are
safe. (Remember both windings
inductive nature) what is the reason
behind that?

Question Posted / r.durgaprasad

2 Answers
3590 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

1. If we apply dc supply to the primary winding of transformer it will be burnt out. similarly ..

Answer / sourabh vishwakarma

because dc has no frequency so that it can't produced inductance than transformer get heated and burn but dc have megnatic proparty so that motor works in dc.

Is This Answer Correct ?

0 Yes

0 No

1. If we apply dc supply to the primary winding of transformer it will be burnt out. similarly ..

Answer / r.durgaprasad

dc motor is protected by back emf
and syn.
motor is protected by self induced
emf. ( for
low voltage of dc supply transformer
is also safe
because there is also self induced
emf is
produced )

Is This Answer Correct ?

2 Yes

5 No

Post New Answer

More Electrical Engineering Interview Questions

given data are load current & power factor cable core size? plz any one update the calculation formula

0 Answers

Why the generator rating in kva

32 Answers CompuCom, DLF, Genpact, HNG, SIPM,

WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?

0 Answers L&T,

i have 2 motor of same rating. on no load condition one motor take 1.6A but other motor is taking 4.8A. what is the reason of this. please explain with proof.

8 Answers Ambuja, UltraTech,

(1)WHAT HAPPENS WHEN SUDDENLY LOAD GIVEN TO THE INDUCTION MOTOR ? (2)CAN WE MAKE WOOD AS MAGNET ? (3)WHAT IS THE VALUE OF MAGNETIC FLUX DENSITY IN TRANSFORMER ? (4)WHY WE ARE USING ELECTROMAGNETI NOT ELECTROSTATIC IN MACHINE ?

0 Answers Cognizant,

Terminal blocks is used for segregate the connections... There is any principle for terminal block..?

0 Answers

Why does the power consumed is always constant even if a fan speed is altered?

5 Answers

What are the protections for HT Motors?

1 Answers BARC,

why the 4 terminal are named as main, line, common, voltage (M, L, C, v) of a wattmeter?? why not its nameed as A,B,C,D??

6 Answers Jindal,

WHAT IS THE DIFFERENCE BETWEEN RESISANTANCE AND IMPEDANCE IF IMPEDANCE IS MORE THAN RESISTANCE AT SAME VOLTAGE CAN WE HAVE RELATION DERIEVED BETWEEN THEM

4 Answers

What is LT Breaker Panel?

1 Answers

what is skin effect

7 Answers NHPC,

For more Electrical Engineering Interview Questions Click Here