Transformers Natural oil cooling is used for transformers upto a rating of 3000 kVA 1000 kVA 250 kVA 500 kVA 3000 kVA 1000 kVA 250 kVA 500 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary of a transformer are ______ coupled. Electrically None of the listed here Magnetically Electrically and magnetically Electrically None of the listed here Magnetically Electrically and magnetically ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ 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 Primary will draw large power Core losses will be excessive ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is ______ the commercial efficiency. The same as More than Less than None of the listed here The same as More than Less than None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following parts of a transformer is visible from outside? Core Secondary winding Primary winding Bushings Core Secondary winding Primary winding Bushings ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Leakage flux is small Applied voltage and frequency are constant Losses are small Iron core is used Leakage flux is small Applied voltage and frequency are constant Losses are small Iron core is used ANSWER DOWNLOAD EXAMIANS APP
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