Transformers The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 load. The turns ratio is 3:1. What is the secondary voltage? 20 V 18 V 2 V 180 V 20 V 18 V 2 V 180 V 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 0 V 0.85 V 1.7 V 1 V 0 V 0.85 V 1.7 V 1 V ANSWER DOWNLOAD EXAMIANS APP
Transformers An open-circuit test on a transformer is conducted primarily to measure total loss copper loss core loss insulation resistance total loss copper loss core loss insulation resistance ANSWER DOWNLOAD EXAMIANS APP
Transformers Sumpner's test is conducted on transformer to determine Temperature None of the listed here All day efficiency Stray losses Temperature None of the listed here All day efficiency Stray losses ANSWER DOWNLOAD EXAMIANS APP
Transformers In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of 15 A None of these more than 15 A less than 15 A 15 A None of these more than 15 A less than 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers The dielectric strength of transformer oil is expected to be 330 kV 33 kV 100 kV lkV 330 kV 33 kV 100 kV lkV ANSWER DOWNLOAD EXAMIANS APP
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