Transformers A transformer has 200 W as iron loss at full load. The iron loss at full load. The iron loss at half full load will be 200 W 50 W 100 W 400 W 200 W 50 W 100 W 400 W ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer will be maximum when ______ Copper loss is equal to constant loss Resistance of the two winding are equal Leakage reactance of the two winding None of the listed here Copper loss is equal to constant loss Resistance of the two winding are equal Leakage reactance of the two winding None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise produced by a transformer is termed as hum buzz ringing zoom hum buzz ringing zoom ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following protection is normally not provided on small distribution transformers? Buchholz relay All of these Overfluxing protection Overcurrent protection Buchholz relay All of these Overfluxing protection Overcurrent protection 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? 9 V 90 V 900 V 0.9 V 9 V 90 V 900 V 0.9 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is less than one great than one None of these approximately equal to one less than one great than one None of these approximately equal to one ANSWER DOWNLOAD EXAMIANS APP
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