Transformers The no load primary current is about ______of full load primary current. 30-40% 15-30% Above 40% 3-5% 30-40% 15-30% Above 40% 3-5% ANSWER DOWNLOAD EXAMIANS APP
Transformers In an auto transformer, the primary and secondary are _____ coupled. None of the listed here Magnetically as well as electrically Only magnetically Only electrically None of the listed here Magnetically as well as electrically Only magnetically Only electrically ANSWER DOWNLOAD EXAMIANS APP
Transformers A no-load test is performed on a transformer to determine magnetising current and loss copper loss efficiency core loss magnetising current magnetising current and loss copper loss efficiency core loss magnetising current ANSWER DOWNLOAD EXAMIANS APP
Transformers Sumpner's test is conducted on transformers to determine stray losses all-day efficiency temperature None of these stray losses all-day efficiency temperature None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers The power efficiency of a lightning transformer is always ______its all day efficiency. None of the listed here Higher than Less than Equal to None of the listed here Higher than Less than Equal to ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer will be maximum when ______ Leakage reactance of the two winding None of the listed here Copper loss is equal to constant loss Resistance of the two winding are equal Leakage reactance of the two winding None of the listed here Copper loss is equal to constant loss Resistance of the two winding are equal ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS