Question

why transformers are rated in KVA while generators are rated in KW?​

Answer 1

Answer:

If we connect inductive or capasitive load (When power factor is not at least unity), The output would differ than as there are losses occurs due to low power factor. For this reason, KVA is an apparent power which does not take in to account the PF (Power factor) instead of KW (Real Power). And kVA = KW / Cos θ.

Explanation:

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Answer 2

Answer:

This is because transformer are used to step up and down the voltage or potential difference which is measured in kilo volt Ampere(KVA) while generator are related with power or rate of power which is measuremed in KiloWatt (KW)