Transformers The efficiency of a transformer will be maximum when ______ None of the listed here Resistance of the two winding are equal Leakage reactance of the two winding Copper loss is equal to constant loss None of the listed here Resistance of the two winding are equal Leakage reactance of the two winding Copper loss is equal to constant loss ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of colling a power transformer is Air blast cooling Oil cooling Natural air cooling Any of the listed here Air blast cooling Oil cooling Natural air cooling Any of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The hum in a transformer is mainly attributed to load changes magnetostriction oil in the transformer mechanical vibrations load changes magnetostriction oil in the transformer mechanical vibrations ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Leakage flux is small Applied voltage and frequency are constant Losses are small Iron core is used Leakage flux is small Applied voltage and frequency are constant Losses are small Iron core is used ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise produced by a transformer is termed as buzz ringing zoom hum buzz ringing zoom hum ANSWER DOWNLOAD EXAMIANS APP
Transformers Short circuit test of a transformer helps us to find its Cu loss at no load Full load cu loss None of the listed here Iron loss Cu loss at no load Full load cu loss None of the listed here Iron loss ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS