Transformers In a transformer routine efficiency depends upon Load current Power factor of load Supply frequency Both power factor and load current Load current Power factor of load Supply frequency Both power factor and load current ANSWER DOWNLOAD EXAMIANS APP
Transformers To step 110 V ac down to 20 V ac, the turns ratio must be 0.18 5.5 18 0.018 0.18 5.5 18 0.018 ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ None of the listed here Magnetising current is abnormally high Permeability of core is increased Primary reactance is too much increased None of the listed here Magnetising current is abnormally high Permeability of core is increased Primary reactance is too much increased ANSWER DOWNLOAD EXAMIANS APP
Transformers Sumpner's test is conducted on transformers to determine all-day efficiency None of these stray losses temperature all-day efficiency None of these stray losses temperature ANSWER DOWNLOAD EXAMIANS APP
Transformers An open-circuit test on a transformer is conducted primarily to measure total loss core loss copper loss insulation resistance total loss core loss copper loss insulation resistance ANSWER DOWNLOAD EXAMIANS APP
Transformers Material used for construction of transformer core is usually Aluminium Wood Copper Silicon steel Aluminium Wood Copper Silicon steel ANSWER DOWNLOAD EXAMIANS APP
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