Transformers The hum in a transformer is mainly attributed to magnetostriction mechanical vibrations load changes oil in the transformer magnetostriction mechanical vibrations load changes oil in the transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Burden of a current transformer is usually expressed in Kilowatt Volt amperes Volts Amperes Kilowatt Volt amperes Volts Amperes ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the coefficient of coupling for a transformer in which 4% of the total flux generated in the primary does not pass through the secondary? 4 9.6 0.96 0.4 4 9.6 0.96 0.4 ANSWER DOWNLOAD EXAMIANS APP
Transformers Short circuit test on transformers is conducted to determine eddy current losses core losses hysteresis losses copper losses eddy current losses core losses hysteresis losses copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers A certain transformer has a turns ratio of 1 and a 0.85 coefficient of coupling. When 2 V ac is applied to the primary, the secondary voltage is 1 V 0 V 1.7 V 0.85 V 1 V 0 V 1.7 V 0.85 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 load. The turns ratio is 3:1. What is the secondary voltage? 2 V 180 V 20 V 18 V 2 V 180 V 20 V 18 V ANSWER DOWNLOAD EXAMIANS APP
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