Transformers The mutual inductance when k = 0.65, L1 = 2 H, and L2 = 5 H is 2 mH 4 μH 8 μH 2 μH 2 mH 4 μH 8 μH 2 μH 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 The open circuit test on a transformer gives _______ Copper losses Total losses Friction losses Iron losses Copper losses Total losses Friction losses Iron losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The hum in a transformer is mainly attributed to oil in the transformer magnetostriction load changes mechanical vibrations oil in the transformer magnetostriction load changes mechanical vibrations ANSWER DOWNLOAD EXAMIANS APP
Transformers The power efficiency of a lightning transformer is always ______its all day efficiency. Higher than Equal to Less than None of the listed here Higher than Equal to Less than None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers For the parallel operation of single phase transformers it is necessary that they should have same kVA rating same number of turns on the secondary side. same polarity same efficiency same kVA rating same number of turns on the secondary side. same polarity same efficiency ANSWER DOWNLOAD EXAMIANS APP
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