Transformers The no load primary current is about ______of full load primary current. 30-40% 15-30% 3-5% Above 40% 30-40% 15-30% 3-5% Above 40% ANSWER DOWNLOAD EXAMIANS APP
Transformers We can find _______of the transformer with open circuit test. Turn ratio Total equivalent resistance Copper losses Total equivalent leakage reactance Turn ratio Total equivalent resistance Copper losses Total equivalent leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers An open-circuit test on a transformer is conducted primarily to measure copper loss total loss core loss insulation resistance copper loss total loss core loss insulation resistance ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following insulating materials can withstand the highest temperature safely? Cellulose Mica Asbestos Glass fibre Cellulose Mica Asbestos Glass fibre ANSWER DOWNLOAD EXAMIANS APP
Transformers The effect of leakage flux in a transformer is to ______ None of the listed here Cause voltage drop in the windings Increase copper losses Decreases copper losses None of the listed here Cause voltage drop in the windings Increase copper losses Decreases copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is 25 0.4 0.2 5 25 0.4 0.2 5 ANSWER DOWNLOAD EXAMIANS APP
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