Transformers The open circuit test on a transformer gives _______ Friction losses Total losses Copper losses Iron losses Friction losses Total losses Copper losses Iron losses ANSWER DOWNLOAD EXAMIANS APP
Transformers Two things which are same for primary and secondary of transformer are ______ Resistance and leakage reactances Currents and induced voltages None of the listed here Ampere turns and voltage per turns Resistance and leakage reactances Currents and induced voltages None of the listed here Ampere turns and voltage per turns ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because it _______ Is a static device Uses inductive coupling Uses electric coupling Uses capacitive coupling Is a static device Uses inductive coupling Uses electric coupling Uses capacitive coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers The hum in a transformer is mainly attributed to oil in the transformer load changes magnetostriction mechanical vibrations oil in the transformer load changes magnetostriction mechanical vibrations ANSWER DOWNLOAD EXAMIANS APP
Transformers Noise level test in a transformer is a type test routine test special test None of these type test routine test special test None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is the main advantage of an auto-transformer over a two winding transformer? Eddy losses are totally eliminated Saving in winding material Copper losses are negligible Hysteresis losses are reduced Eddy losses are totally eliminated Saving in winding material Copper losses are negligible Hysteresis losses are reduced ANSWER DOWNLOAD EXAMIANS APP
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