Transformers The approximate efficiency of a large transformer is 50% 80% 95% 65% 50% 80% 95% 65% ANSWER DOWNLOAD EXAMIANS APP
Transformers A step up transformer increases Frequency Current Power Voltage Frequency Current Power Voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be saturation of core fluctuating load mechanical vibrations poor insulation saturation of core fluctuating load mechanical vibrations poor insulation ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is also called its Energy efficiency Power efficiency Current efficiency None of the listed here Energy efficiency Power efficiency Current efficiency None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ Reluctance of magnetic path is decreased Magnetising current is greatly increased Hysteresis loss is decreased Eddy current is increased Reluctance of magnetic path is decreased Magnetising current is greatly increased Hysteresis loss is decreased Eddy current is increased ANSWER DOWNLOAD EXAMIANS APP
Transformers In an auto transformer, the primary and secondary are _____ coupled. Only electrically Only magnetically None of the listed here Magnetically as well as electrically Only electrically Only magnetically None of the listed here Magnetically as well as electrically ANSWER DOWNLOAD EXAMIANS APP
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