Transformers The primary and secondary of a transformer are ______ coupled. Magnetically Electrically and magnetically Electrically None of the listed here Magnetically Electrically and magnetically Electrically None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following insulating materials can withstand the highest temperature safely? Glass fibre Cellulose Asbestos Mica Glass fibre Cellulose Asbestos Mica ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ Reluctance of magnetic path is decreased Eddy current is increased Hysteresis loss is decreased Magnetising current is greatly increased Reluctance of magnetic path is decreased Eddy current is increased Hysteresis loss is decreased Magnetising current is greatly increased ANSWER DOWNLOAD EXAMIANS APP
Transformers Open circuit test on transformers is conducted to determine copper losses hysteresis losses eddy current losses core losses copper losses hysteresis losses eddy current losses core losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The power efficiency of a lightning transformer is always ______its all day efficiency. Higher than None of the listed here Equal to Less than Higher than None of the listed here Equal to Less than ANSWER DOWNLOAD EXAMIANS APP
Transformers Cores of large transformers are built upto nearly circular cross section in order to reduce Iron losses Leakage reactance Eddy current loss Copper loss Iron losses Leakage reactance Eddy current loss Copper loss ANSWER DOWNLOAD EXAMIANS APP
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