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In order to find the full-load efficiency of a transformer the losses which must be known | |
A. | may be found by performing opencircuit and short-circuit tests [Correct Answer] |
B. | may be found by measuring winding resistances and calculating the I2R losses [Wrong Answer] |
C. | may be found by measuring the input to the primary with secondary open [Wrong Answer] |
D. | cannot be found except by actually loading the transformer fully. [Wrong Answer] |