Transformers The main reason for generation of harmonics in a transformer could be fluctuating load mechanical vibrations saturation of core poor insulation fluctuating load mechanical vibrations saturation of core poor insulation ANSWER DOWNLOAD EXAMIANS APP
Transformers To step 110 V ac down to 20 V ac, the turns ratio must be 5.5 0.18 18 0.018 5.5 0.18 18 0.018 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 friction and windage losses magnetic losses copper losses hysteresis and eddy current losses friction and windage losses magnetic losses copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer is always made on ______ None of the listed here Either low or high voltage winding High voltage winding Low voltage winding None of the listed here Either low or high voltage winding High voltage winding Low voltage winding ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the approximate efficiency of large transformers? 65% 75% 95 % 85% 65% 75% 95 % 85% ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer the resistance between its primary and secondary is Infinite 1 ohm 1000 ohms Zero Infinite 1 ohm 1000 ohms Zero ANSWER DOWNLOAD EXAMIANS APP
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