Transformers The efficiency of a transformer will be maximum when ______ Copper loss is equal to constant loss Leakage reactance of the two winding Resistance of the two winding are equal None of the listed here Copper loss is equal to constant loss Leakage reactance of the two winding Resistance of the two winding are equal None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers When secondary of a current transformer is open-circuited its iron core will be hot because of heavy iron losses taking place in it due to high flux density cool as there is no secondary current none of above will happen hot because primary will carry heavy current hot because of heavy iron losses taking place in it due to high flux density cool as there is no secondary current none of above will happen hot because primary will carry heavy current ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise produced by a transformer is termed as zoom buzz ringing hum zoom buzz ringing hum ANSWER DOWNLOAD EXAMIANS APP
Transformers Which motor is preferred for use in mines where explosive gases exist? Induction motor Synchronous motor Air motor Shunt motor Induction motor Synchronous motor Air motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
Transformers We can find _______of the transformer with open circuit test. Copper losses Total equivalent resistance Total equivalent leakage reactance Turn ratio Copper losses Total equivalent resistance Total equivalent leakage reactance Turn ratio ANSWER DOWNLOAD EXAMIANS APP
Transformers Transformer breaths in when load remains constant load on it increases load on it decreases None of these load remains constant load on it increases load on it decreases None of these ANSWER DOWNLOAD EXAMIANS APP
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