Transformers The no load primary current is about ______of full load primary current. 15-30% Above 40% 30-40% 3-5% 15-30% Above 40% 30-40% 3-5% ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is also called its Power efficiency Current efficiency None of the listed here Energy efficiency Power efficiency Current efficiency None of the listed here Energy efficiency 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? 0.9 V 9 V 90 V 900 V 0.9 V 9 V 90 V 900 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 load. The turns ratio is 3:1. What is the secondary voltage? 180 V 2 V 18 V 20 V 180 V 2 V 18 V 20 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Negative voltage regulation is indicative that the load is None of these capacitive only inductive or resistive inductive only None of these capacitive only inductive or resistive inductive only ANSWER DOWNLOAD EXAMIANS APP
Transformers Losses which occur in rotating electric machines and do not occur in trans formers are magnetic losses friction and windage losses copper losses hysteresis and eddy current losses magnetic losses friction and windage losses copper losses hysteresis and eddy current losses ANSWER DOWNLOAD EXAMIANS APP
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