For the same power rating,which motor is bigger in size,AC or DC?

Answer Posted / kapil pandey

In AC- P = Root3 *V*I (for 3 phases) [ 3 core windings]
In DC - P= 3*V*I (for 3 phases)[6 core windings]
means for getting power sqroot3 times we have to wound
double. making the DC motor size bigger.
one more thing that the loss arresting system & protection
system shall also be bigger in case of DC.

Is This Answer Correct ?    8 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what are the tests comes under the type test, what tests comes under routine tests.

1023


What happen Grid EARTH plat got cut.

1735


why Lightning arrestor are made by 2 seperate stack of inslutor but why cvt are in single stack of insulator.

1515


what is mind in cable

1563


What is 100% protection of generator? Why 100% is not used but 95% is generally used?

616






what is tri state logic gate

1608


pls tell me function of closing coil of A.C.B.

2883


BSNL TTA EXAM QUESTION

1763


what is the difference between changer, converter and transformer?

894


What is called limb of a transformer?

601


I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??

1395


HOW TO CALCULATE S/C,O/C,E/F OF ACB.

2140


how to check three phase motor torque value?

1730


what are the application of over current relay?

4212


Proviiding the Dedicated N earth and individual Body Earths ,Finally these all looped /Now my Question :- will it not harm in case of Transformer Fault current flows in Dediacted N Earthing to Looped Body Earthing.

1738