Transformers A certain transformer has a turns ratio of 1 and a 0.85 coefficient of coupling. When 2 V ac is applied to the primary, the secondary voltage is 0.85 V 1 V 1.7 V 0 V 0.85 V 1 V 1.7 V 0 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum efficiency of a distribution transformer is at 80% full load at no load at 50% full load at full load at 80% full load at no load at 50% full load at full load ANSWER DOWNLOAD EXAMIANS APP
Transformers An isolation transformer has primary to secondady turns ratio of Can be any ratio 1:1 2:1 1:2 Can be any ratio 1:1 2:1 1:2 ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer is always made on ______ High voltage winding None of the listed here Low voltage winding Either low or high voltage winding High voltage winding None of the listed here Low voltage winding Either low or high voltage winding ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Applied voltage and frequency are constant Iron core is used Leakage flux is small Losses are small Applied voltage and frequency are constant Iron core is used Leakage flux is small Losses are small ANSWER DOWNLOAD EXAMIANS APP
Transformers In an auto transformer, the primary and secondary are _____ coupled. Magnetically as well as electrically None of the listed here Only magnetically Only electrically Magnetically as well as electrically None of the listed here Only magnetically Only electrically ANSWER DOWNLOAD EXAMIANS APP
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