Transformers The efficiencies of transformers compared with that of electric motors of the same power are somewhat smaller about the same much higher much smaller somewhat smaller about the same much higher much smaller ANSWER DOWNLOAD EXAMIANS APP
Transformers Material used for construction of transformer core is usually Silicon steel Wood Copper Aluminium Silicon steel Wood Copper Aluminium ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following acts as a protection against high voltage surges due to lightning and switching? Breather Thermal overload relays Horn gaps Conservator Breather Thermal overload relays Horn gaps Conservator ANSWER DOWNLOAD EXAMIANS APP
Transformers How are transformers generally cooled for installations rated at less than 5kVA ? Air cooled Oil cooled None of the listed here Water cooled Air cooled Oil cooled None of the listed here Water cooled ANSWER DOWNLOAD EXAMIANS APP
Transformers Leakage flux in a transformer occurs because Air is not a good magnetic insulator Applied voltage is sinusoidal Transformer is not an efficient device Iron core has high permeability Air is not a good magnetic insulator Applied voltage is sinusoidal Transformer is not an efficient device Iron core has high permeability ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer, leakage flux Is minimised by interleaving the primary and secondary windings Helps in transfer of energy Produces mutually induced emf Is negligible at full load Is minimised by interleaving the primary and secondary windings Helps in transfer of energy Produces mutually induced emf Is negligible at full load ANSWER DOWNLOAD EXAMIANS APP
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