Transformers A transformer operates poorly at very low frequencies because _____ None of the listed here Primary reactance is too much increased Magnetising current is abnormally high Permeability of core is increased None of the listed here Primary reactance is too much increased Magnetising current is abnormally high Permeability of core is increased ANSWER DOWNLOAD EXAMIANS APP
Transformers No-load current of a transformer has has high magnitude and high power factor has small magnitude and high power factor has high magnitude and low power factor has small magnitude and low power factor has high magnitude and high power factor has small magnitude and high power factor has high magnitude and low power factor has small magnitude and low power factor ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum load that a power transformer can carry is limited by its voltage ratio temperature rise dielectric strength of oil copper loss voltage ratio temperature rise dielectric strength of oil copper loss ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the approximate efficiency of large transformers? 85% 75% 95 % 65% 85% 75% 95 % 65% ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary winding of a power transformer should always be fused open switched shorted fused open switched shorted ANSWER DOWNLOAD EXAMIANS APP
Transformers An isolation transformer has primary to secondady turns ratio of 2:1 1:2 1:1 Can be any ratio 2:1 1:2 1:1 Can be any ratio ANSWER DOWNLOAD EXAMIANS APP
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