Transformers By laminating the core of a transformer, we decrease _____ Eddy current loss Copper loss Hysteresis loss Leakage reactance Eddy current loss Copper loss Hysteresis loss Leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is the main advantage of an auto-transformer over a two winding transformer? Saving in winding material Copper losses are negligible Hysteresis losses are reduced Eddy losses are totally eliminated Saving in winding material Copper losses are negligible Hysteresis losses are reduced Eddy losses are totally eliminated ANSWER DOWNLOAD EXAMIANS APP
Transformers Distribution transformers are generally designed for maximum efficiency around 50% load Zero load 25% load 90% load 50% load Zero load 25% load 90% load ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ Primary will draw large power Core losses will be excessive None of the listed here Primary reactance is too much increased Primary will draw large power Core losses will be excessive None of the listed here Primary reactance is too much increased ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be fluctuating load poor insulation saturation of core mechanical vibrations fluctuating load poor insulation saturation of core mechanical vibrations ANSWER DOWNLOAD EXAMIANS APP
Transformers If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is 250 W 25 W 0 W 2.5 W 250 W 25 W 0 W 2.5 W ANSWER DOWNLOAD EXAMIANS APP
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