Transformers In a transformer, leakage flux Helps in transfer of energy Is negligible at full load Is minimised by interleaving the primary and secondary windings Produces mutually induced emf Helps in transfer of energy Is negligible at full load Is minimised by interleaving the primary and secondary windings Produces mutually induced emf ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 95% 50% 80% 65% 95% 50% 80% 65% ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer oil must be free from Sludge Gases Moisture Odour Sludge Gases Moisture Odour ANSWER DOWNLOAD EXAMIANS APP
Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Auto transformer Voltage transformer Power transformer Current transformer Auto transformer Voltage transformer Power transformer Current transformer 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? 9.6 0.96 4 0.4 9.6 0.96 4 0.4 ANSWER DOWNLOAD EXAMIANS APP
Transformers Primary winding of a transformer is always a high voltage winding None of these is always a low voltage winding could either be a low voltage or high voltage winding is always a high voltage winding None of these is always a low voltage winding could either be a low voltage or high voltage winding ANSWER DOWNLOAD EXAMIANS APP
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