Transformers The efficiency of a transformer will be maximum when ______ Leakage reactance of the two winding Copper loss is equal to constant loss Resistance of the two winding are equal None of the listed here Leakage reactance of the two winding Copper loss is equal to constant loss Resistance of the two winding are equal None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is great than one approximately equal to one less than one None of these great than one approximately equal to one less than one None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers In the short circuit test on a transformer, we generally short circuit ______ None of the listed here High voltage winding Low voltage winding Either low or high voltage winding None of the listed here High voltage winding Low voltage winding Either low or high voltage winding ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 load. The turns ratio is 3:1. What is the secondary voltage? 2 V 18 V 20 V 180 V 2 V 18 V 20 V 180 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Short circuit test on transformers is conducted to determine eddy current losses hysteresis losses copper losses core losses eddy current losses hysteresis losses copper losses core losses ANSWER DOWNLOAD EXAMIANS APP
Transformers Which winding of the transformer has less cross-sectional area? Primary winding Secondary winding Low voltage winding High voltage winding Primary winding Secondary winding Low voltage winding High voltage winding ANSWER DOWNLOAD EXAMIANS APP
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