Transformers In a transformer the energy is conveyed from primary to secondary through air by the flux through cooling coil None of these through air by the flux through cooling coil None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers The principle of working of transformer is Self induction Mutual induction Static induction Dynamic induction Self induction Mutual induction Static induction Dynamic induction 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 None of these less than 15 A 15 A more than 15 A None of these less than 15 A 15 A more than 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers The output current corresponding to the maximum efficiency for a transformer having core loss of 200 W and equivalent resistance referred to secondary of 0.5 Ω is 20 A 15 A 5 A 10 A 20 A 15 A 5 A 10 A 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 In the short circuit test on a transformer, we generally short circuit ______ Either low or high voltage winding Low voltage winding High voltage winding None of the listed here Either low or high voltage winding Low voltage winding High voltage winding None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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