Transformers Which winding in a transformer has more number of turns? Primary winding High voltage winding Low voltage winding Secondary winding Primary winding High voltage winding Low voltage winding Secondary winding ANSWER DOWNLOAD EXAMIANS APP
Transformers How are transformers generally cooled for installations rated at less than 5kVA ? Oil cooled Water cooled None of the listed here Air cooled Oil cooled Water cooled None of the listed here Air cooled ANSWER DOWNLOAD EXAMIANS APP
Transformers When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is 12 V 2,400 V 120 V 240 V 12 V 2,400 V 120 V 240 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The iron core is used to ______of the transformer. None of the listed here Reduce core loss Increase the wight Provide tight magnetic coupling None of the listed here Reduce core loss Increase the wight Provide tight magnetic coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer routine efficiency depends upon Supply frequency Both power factor and load current Power factor of load Load current Supply frequency Both power factor and load current Power factor of load Load current ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ Permeability of core is increased Primary reactance is too much increased Magnetising current is abnormally high None of the listed here Permeability of core is increased Primary reactance is too much increased Magnetising current is abnormally high None of the listed here ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS