Transformers How many primary volts must be applied to a transformer with a turns ratio of 0.1 to obtain a secondary voltage of 9 V? 90 V 900 V 9 V 0.9 V 90 V 900 V 9 V 0.9 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is also called its Power efficiency None of the listed here Energy efficiency Current efficiency Power efficiency None of the listed here Energy efficiency Current efficiency ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary windings are wound on the top of each other in order to reduce ______ Copper losses Leakage reactance Winding resistance Iron losses Copper losses Leakage reactance Winding resistance Iron losses ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer oil must be free from Odour Gases Sludge Moisture Odour Gases Sludge Moisture ANSWER DOWNLOAD EXAMIANS APP
Transformers The effect of leakage flux in a transformer is to ______ Cause voltage drop in the windings Increase copper losses None of the listed here Decreases copper losses Cause voltage drop in the windings Increase copper losses None of the listed here Decreases copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The steel used for transformer core has All of the listed here High silicon content High permeability Low hysteresis loss All of the listed here High silicon content High permeability Low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
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