Transformers An open-circuit test on a transformer is conducted primarily to measure total loss core loss copper loss insulation resistance total loss core loss copper loss insulation resistance ANSWER DOWNLOAD EXAMIANS APP
Transformers A certain transformer has a turns ratio of 1 and a 0.85 coefficient of coupling. When 2 V ac is applied to the primary, the secondary voltage is 1.7 V 0.85 V 1 V 0 V 1.7 V 0.85 V 1 V 0 V ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer will have zero efficiency at No load Full load None of the listed here Half full load No load Full load None of the listed here Half full load ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following insulating materials can withstand the highest temperature safely? Asbestos Glass fibre Cellulose Mica Asbestos Glass fibre Cellulose Mica ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be saturation of core mechanical vibrations fluctuating load poor insulation saturation of core mechanical vibrations fluctuating load poor insulation ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Iron core is used Leakage flux is small Losses are small Applied voltage and frequency are constant Iron core is used Leakage flux is small Losses are small Applied voltage and frequency are constant ANSWER DOWNLOAD EXAMIANS APP
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