Transformers Leakage flux in a transformer occurs because Air is not a good magnetic insulator Iron core has high permeability Transformer is not an efficient device Applied voltage is sinusoidal Air is not a good magnetic insulator Iron core has high permeability Transformer is not an efficient device Applied voltage is sinusoidal ANSWER DOWNLOAD EXAMIANS APP
Transformers If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is 0 W 25 W 2.5 W 250 W 0 W 25 W 2.5 W 250 W ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers up to a rating of 250 kVA 500 kVA 3000 kVA 1000 kVA 250 kVA 500 kVA 3000 kVA 1000 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 load. The turns ratio is 3:1. What is the secondary voltage? 18 V 20 V 2 V 180 V 18 V 20 V 2 V 180 V ANSWER DOWNLOAD EXAMIANS APP
Transformers An ideal transformer is one which has no losses and magnetic leakage interleaved primary and secondary windings core of stainless steel and winding of pure copper metal a common core for its primary and secondary windings no losses and magnetic leakage interleaved primary and secondary windings core of stainless steel and winding of pure copper metal a common core for its primary and secondary windings ANSWER DOWNLOAD EXAMIANS APP
Transformers An isolation transformer has primary to secondady turns ratio of 1:2 2:1 1:1 Can be any ratio 1:2 2:1 1:1 Can be any ratio ANSWER DOWNLOAD EXAMIANS APP
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