SSC JE Electrical Engineering 26 Sep 2019 Shift 1 Paper

Question : 111 of 200

Marks: +1, -0

What would the total loss of the 2kVA transformer corresponding to maximum efficiency be, provided the transformer has iron of 150 W and full-load copper loss of 250W?

500 W
400 W
100 W
300 W

Validate

Solution:

The condition for maximum efficiency is, Full load copper loss = Iron loss + Full load copper loss

P = P_e + P_i = 150 + 150

= 300 W

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