64)During the short-circuit test on a small transformer the frequency is increased from 50-200Hz. The
copper losses will increase by a factor of
A. 16
B. 4
C. 1
D. 1/4

1 Answer

Answer :

A) 16

Related questions

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Last Answer : During short circuit test iron losses are negligible because the voltage applied on primary side is low.

Description : 45 The function of conservator in a transformer is A. To protect against internal fault B. To reduce copper as well as core losses C. To cool the transformer oil D. To take care of the expansion and contraction of transformer oil due to variation of temperature of surroundings

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Description : 42 The efficiency of a transformer will be maximum when A. copper losses = hysteresis losses B. Hysteresis losses = eddy current losses C. Eddy current losses = copper losses D. Copper losses = iron losses

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