Transformers To step 110 V ac down to 20 V ac, the turns ratio must be 0.018 0.18 5.5 18 0.018 0.18 5.5 18 ANSWER DOWNLOAD EXAMIANS APP
Transformers The effect of leakage flux in a transformer is to ______ Cause voltage drop in the windings None of the listed here Decreases copper losses Increase copper losses Cause voltage drop in the windings None of the listed here Decreases copper losses Increase copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers How many primary volts must be applied to a transformer with a turns ratio of 0.1 to obtain a secondary voltage of 9 V? 900 V 9 V 90 V 0.9 V 900 V 9 V 90 V 0.9 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Two things which are same for primary and secondary of transformer are ______ None of the listed here Resistance and leakage reactances Ampere turns and voltage per turns Currents and induced voltages None of the listed here Resistance and leakage reactances Ampere turns and voltage per turns Currents and induced voltages ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has full load copper loss of 400 W. The copper loss at half full load will be _____. 200 W 100 W 400 W None of the listed here 200 W 100 W 400 W None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The secondary of a current transformer is always short-circuited under operating conditions because it is safe to human beings protects the primary circuit None of these avoids core saturation and high voltage induction is safe to human beings protects the primary circuit None of these avoids core saturation and high voltage induction ANSWER DOWNLOAD EXAMIANS APP
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