Transformers For the parallel operation of single phase transformers it is necessary that they should have same number of turns on the secondary side. same kVA rating same efficiency same polarity same number of turns on the secondary side. same kVA rating same efficiency same polarity ANSWER DOWNLOAD EXAMIANS APP
Transformers An isolation transformer has primary to secondady turns ratio of Can be any ratio 1:2 1:1 2:1 Can be any ratio 1:2 1:1 2:1 ANSWER DOWNLOAD EXAMIANS APP
Transformers An ideal transformer is one which has a common core for its primary and secondary windings no losses and magnetic leakage interleaved primary and secondary windings core of stainless steel and winding of pure copper metal a common core for its primary and secondary windings no losses and magnetic leakage interleaved primary and secondary windings core of stainless steel and winding of pure copper metal ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be mechanical vibrations poor insulation saturation of core fluctuating load mechanical vibrations poor insulation saturation of core fluctuating load ANSWER DOWNLOAD EXAMIANS APP
Transformers Losses which occur in rotating electric machines and do not occur in trans formers are hysteresis and eddy current losses copper losses friction and windage losses magnetic losses hysteresis and eddy current losses copper losses friction and windage losses magnetic losses ANSWER DOWNLOAD EXAMIANS APP
Transformers Distribution transformers are generally designed for maximum efficiency around 25% load 90% load 50% load Zero load 25% load 90% load 50% load Zero load ANSWER DOWNLOAD EXAMIANS APP
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