Why is motor rated in KW instead of KVA?

The motor is rated in KW instead of KVA because motor produces mechanical output which is directly related to the real power consumption done by the motor, unlike a generator in which the power is rated in KVA because the output of the generator depends upon the type of load connected to it.

In other words, the power factor of the motor is fixed by the designer because it produces a mechanical output that does not depend on the load, unlike the generator that produces electrical output which depends on the type of load.

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