Transformers Which motor is preferred for use in mines where explosive gases exist? Induction motor Shunt motor Synchronous motor Air motor Induction motor Shunt motor Synchronous motor Air motor ANSWER DOWNLOAD EXAMIANS APP
Transformers The no load primary current is about ______of full load primary current. 15-30% 30-40% 3-5% Above 40% 15-30% 30-40% 3-5% Above 40% ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer will be maximum when ______ Resistance of the two winding are equal Copper loss is equal to constant loss Leakage reactance of the two winding None of the listed here Resistance of the two winding are equal Copper loss is equal to constant loss Leakage reactance of the two winding None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer transfers electrical energy from primary to secondary usually with a change in ______ Power Frequency Time period Voltage Power Frequency Time period Voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers In the short circuit test on a transformer, we generally short circuit ______ High voltage winding None of the listed here Either low or high voltage winding Low voltage winding High voltage winding None of the listed here Either low or high voltage winding Low voltage winding ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary winding of a power transformer should always be switched shorted fused open switched shorted fused open ANSWER DOWNLOAD EXAMIANS APP
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