engineering recuitment UPPSC AE Mock Test 2024 Electrical Machines Transformer Transformer Working Principle
Why is the rated output of a transformer expressed in kVA instead of kW?
1
Because the Ohmic loss depends on the transformer voltage
2
Because the total transformer heat loss is expressed in volt-ampere and is independent of the power factor
3
Because the core loss depends on the transformer current
4
Because the transformer operates at a very high efficiency