Transformers Which of the following is the main advantage of an auto-transformer over a two winding transformer? Copper losses are negligible Eddy losses are totally eliminated Saving in winding material Hysteresis losses are reduced Copper losses are negligible Eddy losses are totally eliminated Saving in winding material Hysteresis losses are reduced 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? 90 V 9 V 900 V 0.9 V 90 V 9 V 900 V 0.9 V ANSWER DOWNLOAD EXAMIANS APP
Transformers When the secondary of a transformer is short circuited, the primary inductance _______ None of the listed here Is decreased Is increased Remians unchanged None of the listed here Is decreased Is increased Remians unchanged ANSWER DOWNLOAD EXAMIANS APP
Transformers The principle of working of transformer is Self induction Dynamic induction Mutual induction Static induction Self induction Dynamic induction Mutual induction Static induction ANSWER DOWNLOAD EXAMIANS APP
Transformers A Buchholz relay can be installed on Welding transformer Auto transformer Oil cooled transformer Air-cooled transformer Welding transformer Auto transformer Oil cooled transformer Air-cooled transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following insulating materials can withstand the highest temperature safely? Asbestos Mica Cellulose Glass fibre Asbestos Mica Cellulose Glass fibre ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS