Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Voltage transformer Current transformer Power transformer Auto transformer Voltage transformer Current transformer Power transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers How are transformers generally cooled for installations rated at less than 5kVA ? Oil cooled None of the listed here Water cooled Air cooled Oil cooled None of the listed here Water cooled Air cooled ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer, leakage flux Helps in transfer of energy Is negligible at full load Produces mutually induced emf Is minimised by interleaving the primary and secondary windings Helps in transfer of energy Is negligible at full load Produces mutually induced emf Is minimised by interleaving the primary and secondary windings ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of colling a power transformer is Air blast cooling Any of the listed here Oil cooling Natural air cooling Air blast cooling Any of the listed here Oil cooling Natural air cooling ANSWER DOWNLOAD EXAMIANS APP
Transformers In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of more than 15 A less than 15 A None of these 15 A more than 15 A less than 15 A None of these 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 65% 80% 50% 95% 65% 80% 50% 95% ANSWER DOWNLOAD EXAMIANS APP
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