Transformers The mutual inductance when k = 0.65, L1 = 2 H, and L2 = 5 H is 2 mH 8 μH 2 μH 4 μH 2 mH 8 μH 2 μH 4 μH ANSWER DOWNLOAD EXAMIANS APP
Transformers Cores of large transformers are built upto nearly circular cross section in order to reduce Eddy current loss Leakage reactance Iron losses Copper loss Eddy current loss Leakage reactance Iron losses Copper loss ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is also called its Power efficiency Energy efficiency None of the listed here Current efficiency Power efficiency Energy efficiency None of the listed here Current efficiency ANSWER DOWNLOAD EXAMIANS APP
Transformers A shell-type transformer has None of these reduced magnetic leakage negligibly hysteresis losses high eddy current losses None of these reduced magnetic leakage negligibly hysteresis losses high eddy current 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 more than 15 A None of these less than 15 A 15 A more than 15 A None of these less than 15 A 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be saturation of core poor insulation fluctuating load mechanical vibrations saturation of core poor insulation fluctuating load mechanical vibrations ANSWER DOWNLOAD EXAMIANS APP
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