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The open-circuit test on a transformer is performed at rated voltage to primarily determine:

AFull-load copper loss
BStray load loss
CCore loss (Iron loss)
DWinding resistance

Explanation

The open-circuit test is conducted at rated voltage and rated frequency with the secondary open to measure hysteresis and eddy current (core) losses.

Submitted by: mcqstutor Team More Electrical Engineering MCQs →

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