what will happen if dc motor given ac supply

Answer Posted / parth belani

It will run. heating will take place which will damage the
motor if it is given AC supply for longer duration.
when AC supply is given to DC motor, the direction of the
magnetic field as well as the direction of the current in
the armature will be reversed in the second half of the AC
cycle. so, the direction of the torque will remain the same
in both the halves of the AC cycle. and motor will run.

Is This Answer Correct ?    29 Yes 12 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what will happen when the dc supply is given to the capacitor?

1007


what is the difference between fault current ant short circuit current?

2254


all interview questions with answers of ntpc (2000-2009

1773


what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

1810


What will happen if we introduce negative feedback to a control system that uses a positive feedback?

678






how can we save enegry by using VFD for Resiprocating Air compressor which is having more unloading running hours

1791


can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?

951


Form S and "c" license application both are same? @ tneb portal

1261


what parameters are should nessary for control technic dc drive(in rolling mills)?

1512


how can found motors folt current ? how can disided circuit breakers caoicity and breaking capicity ?

1621


What must be the minimum distance maintained between 2 Generators as per International standards?

1589


1) why a dg set shows variation of power factor and load when synchronised with other dgs? 2)Why the load sharing is not become equal in all dgs?. 3)When a dg set will not run on auto start?

1537


for 11KV OH system what will be typical per KM "R" "L" "C" parameter. for 33KV OH system what will be typical per KM "R" "L" "C" parameter. for 33KV UG system what will be typical per KM "R" "L" "C" parameter.

1968


i am studying in final year can i allowed for 23rd UES of Indian army

1654


how can decide the current rating of oltc

1861