Transformers When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is 12 V 240 V 2,400 V 120 V 12 V 240 V 2,400 V 120 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Cores of large transformers are built upto nearly circular cross section in order to reduce Iron losses Leakage reactance Copper loss Eddy current loss Iron losses Leakage reactance Copper loss Eddy current loss ANSWER DOWNLOAD EXAMIANS APP
Transformers The voltage transformation ratio of a transformer is equal to the ratio of secondary induced e.m.f. to primary induced e.m.f. primary turns to secondary turns secondary terminal voltage to primary applied voltage secondary current to primary current secondary induced e.m.f. to primary induced e.m.f. primary turns to secondary turns secondary terminal voltage to primary applied voltage secondary current to primary current ANSWER DOWNLOAD EXAMIANS APP
Transformers In which of the following transformer part of primary winding also serves as the secondary winding? Step-up transformer Potential transformer Current transformer Auto transformer Step-up transformer Potential transformer Current transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV? 8 kVA 16 kVA 0.25 kVA 4 kVA 8 kVA 16 kVA 0.25 kVA 4 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer the resistance between its primary and secondary is Zero Infinite 1 ohm 1000 ohms Zero Infinite 1 ohm 1000 ohms ANSWER DOWNLOAD EXAMIANS APP
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