Transformers The hum in a transformer is mainly attributed to mechanical vibrations magnetostriction oil in the transformer load changes mechanical vibrations magnetostriction oil in the transformer load changes ANSWER DOWNLOAD EXAMIANS APP
Transformers No-load current of a transformer has has high magnitude and low power factor has high magnitude and high power factor has small magnitude and high power factor has small magnitude and low power factor has high magnitude and low power factor has high magnitude and high power factor has small magnitude and high power factor has small magnitude and low power factor ANSWER DOWNLOAD EXAMIANS APP
Transformers The turns ratio required to match an 80 source to a 320 load is 80 2 20 4 80 2 20 4 ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is also called its Power efficiency None of the listed here Energy efficiency Current efficiency Power efficiency None of the listed here Energy efficiency Current efficiency ANSWER DOWNLOAD EXAMIANS APP
Transformers A shell-type transformer has high eddy current losses negligibly hysteresis losses reduced magnetic leakage None of these high eddy current losses negligibly hysteresis losses reduced magnetic leakage None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual inductance when k = 0.65, L1 = 2 H, and L2 = 5 H is 8 μH 4 μH 2 μH 2 mH 8 μH 4 μH 2 μH 2 mH ANSWER DOWNLOAD EXAMIANS APP
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