Answer / srujan

In generators and transformers the maximum possible load is
decided by temperature rise of the machine.

And all of us know the temperature rise is directly
prepotional to Current in machine and which is prepotional
to KVA.


But in the case of motor the possible maximum loading is
depends on the output torque.So its ratyeing is always in
KW.

Answer / sundar

generator is produced in current but supply the current from
motor is running in this differance between kva & kw

why we use dc motor instead of ac motor?

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