Transformers Power transformers are generally designed to have maximum efficiency around 10% overload no-load half-load near full-load 10% overload no-load half-load near full-load ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ None of the listed here Primary reactance is too much increased Core losses will be excessive Primary will draw large power None of the listed here Primary reactance is too much increased Core losses will be excessive Primary will draw large power ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer routine efficiency depends upon Power factor of load Supply frequency Both power factor and load current Load current Power factor of load Supply frequency Both power factor and load current Load current ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following acts as a protection against high voltage surges due to lightning and switching? Conservator Breather Horn gaps Thermal overload relays Conservator Breather Horn gaps Thermal overload relays ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer will be maximum when ______ 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 Copper loss is equal to constant loss ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer will have zero efficiency at No load Half full load Full load None of the listed here No load Half full load Full load None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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