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?

Answer Posted / 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



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

for 750 kw LT load what will be the ht kva

1251


we have consol make 3 phase servo stabilizer for cnc m/c. while installing the earth neutral voltage is 1.7 volts at stbilizer off condition and when stabilizer get on en voltage reaches 4.8 volts (new earthing is done and neutral is helthy condition all phase to neutral volts 440,442,441 v)why this happen.solution for cause.

5576


one conductor length is L.and i am strech uniformly this conductor and made length is 2L.so resistance of this strech conductor is R=4R..but i want to know about area of stech conductor hows it become a/2..

1689


what is the difference between rectifier and converter and commudator?

1479


What range of speed can you get with the armature control method of speed control of d.c. Shunt motor?

640






what is draiv work

1449


If ROC does not lies inside unit circle,then ? a) Fourier transform converges b) Z transform converges c) Hatly transform converges d) Colpit Transform converges.

1847


In a flange coupling, the flange bolts are designed for

706


What is the meaning of HT Trivector Meter ?

1956


What is the function of capacitor in electrical circuits?

622


what is the meaning of vcc

1904


In how we connect watt meter for open & short circuit test of a single phase transformer.

5652


what is calculation mathod/formaulla for deciding Size of busbar (Copper/ aluminum)for L.T. panel on Various Fault level like 50kA,25kA,10kA

2321


What is the gross weight to copper ratio in slip ring induction motor of 4000 HP,6.6 kv, 372amp, 992 rpm GE motor.

1917


In an ACB shunt trip coil and undervoltage coil operated normally( breaker open and charged). But closing coil not operating untill manually discharge and recharging. Any help.

1294