Transformers The hum in a transformer is mainly attributed to oil in the transformer load changes magnetostriction mechanical vibrations oil in the transformer load changes magnetostriction mechanical vibrations ANSWER DOWNLOAD EXAMIANS APP
Transformers The amount of copper in the primary is _______that of secondary. None of the listed here About the same as Greater than Smaller than None of the listed here About the same as Greater than Smaller than ANSWER DOWNLOAD EXAMIANS APP
Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Power transformer Voltage transformer Auto transformer Current transformer Power transformer Voltage transformer Auto transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers No-load on a transformer is carried out to determine magnetising current efficiency of the transformer copper loss magnetising current and loss magnetising current efficiency of the transformer copper loss magnetising current and loss ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following acts as a protection against high voltage surges due to lightning and switching? Breather Conservator Horn gaps Thermal overload relays Breather Conservator Horn gaps Thermal overload relays ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following parts of a transformer is visible from outside? Core Secondary winding Bushings Primary winding Core Secondary winding Bushings Primary winding ANSWER DOWNLOAD EXAMIANS APP
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