Transformers The hum in a transformer is mainly attributed to oil in the transformer magnetostriction mechanical vibrations load changes oil in the transformer magnetostriction mechanical vibrations load changes ANSWER DOWNLOAD EXAMIANS APP
Transformers Transformer breaths in when load on it decreases None of these load on it increases load remains constant load on it decreases None of these load on it increases load remains constant ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer oil must be free from Moisture Sludge Odour Gases Moisture Sludge Odour Gases 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 0 V 1.7 V 1 V 0.85 V 0 V 1.7 V 1 V 0.85 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary leakage flux links _____ Secondary winding only Both primary and secondary windings None of the listed here Primary winding only Secondary winding only Both primary and secondary windings None of the listed here Primary winding only ANSWER DOWNLOAD EXAMIANS APP
Transformers How are transformers generally cooled for installations rated at less than 5kVA ? Oil cooled Air cooled Water cooled None of the listed here Oil cooled Air cooled Water cooled None of the listed here ANSWER DOWNLOAD EXAMIANS APP