Mathematics · Electrical Machines

Open-circuit (OC) and short-circuit (SC) tests conducted on a 10 kVA, 2000 V/200 V, 50 Hz single-phase transformer gave the following readings: OC test (on LV side): 200 V, 1.1 A, 81 W SC test (on HV side): 30 V, 5 A, 100 W At what fraction of full load will the transformer operate at maximum efficiency?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

10.7
20.6
30.8
40.9✓

Correct answer

0.9

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