SSC JE Electrical Engineering 2011 Paper

Question : 113 of 150

Marks: +1, -0

A 20 kVA, 2000 V / 200 V, 2-winding transformer, when used as an autotransformer, with constant voltage source of 2000 V, is capable of handling.

Solution:

Let auto transformer is additive

I_{\LV}={20×10^3}/200=100A

Out put

K_\V A

handed by auto transfmer

= 2200 × 100 = 220 K_\V A

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