Transformers What is the coefficient of coupling for a transformer in which 4% of the total flux generated in the primary does not pass through the secondary? 0.4 0.96 9.6 4 0.4 0.96 9.6 4 ANSWER DOWNLOAD EXAMIANS APP
Transformers How are transformers generally cooled for installations rated at less than 5kVA ? None of the listed here Air cooled Oil cooled Water cooled None of the listed here Air cooled Oil cooled Water cooled ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of colling a power transformer is Any of the listed here Oil cooling Air blast cooling Natural air cooling Any of the listed here Oil cooling Air blast cooling Natural air cooling ANSWER DOWNLOAD EXAMIANS APP
Transformers The output current corresponding to the maximum efficiency for a transformer having core loss of 200 W and equivalent resistance referred to secondary of 0.5 Ω is 5 A 20 A 10 A 15 A 5 A 20 A 10 A 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers No-load on a transformer is carried out to determine magnetising current efficiency of the transformer copper loss magnetising current and loss magnetising current efficiency of the transformer copper loss magnetising current and loss ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is less than one None of these great than one approximately equal to one less than one None of these great than one approximately equal to one ANSWER DOWNLOAD EXAMIANS APP
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