Transformers In a transformer the energy is conveyed from primary to secondary None of these by the flux through cooling coil through air None of these by the flux through cooling coil through air ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is also called its Energy efficiency None of the listed here Power efficiency Current efficiency Energy efficiency None of the listed here Power efficiency Current efficiency ANSWER DOWNLOAD EXAMIANS APP
Transformers The effect of leakage flux in a transformer is to ______ Decreases copper losses Increase copper losses None of the listed here Cause voltage drop in the windings Decreases copper losses Increase copper losses None of the listed here Cause voltage drop in the windings ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be poor insulation mechanical vibrations fluctuating load saturation of core poor insulation mechanical vibrations fluctuating load saturation of core ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer gives _______ Iron losses Copper losses Friction losses Total losses Iron losses Copper losses Friction losses Total losses 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 1 V 1.7 V 0 V 0.85 V 1 V 1.7 V 0 V 0.85 V ANSWER DOWNLOAD EXAMIANS APP
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