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 25 W 0 W 2.5 W 250 W 25 W 0 W 2.5 W 250 W ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Potential transformer Power transformer Auto transformer Current transformer Potential transformer Power transformer Auto transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers An isolation transformer has primary to secondady turns ratio of 2:1 1:2 1:1 Can be any ratio 2:1 1:2 1:1 Can be any ratio ANSWER DOWNLOAD EXAMIANS APP
Transformers The no load primary current is about ______of full load primary current. 3-5% 15-30% 30-40% Above 40% 3-5% 15-30% 30-40% Above 40% ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ Hysteresis loss is decreased Eddy current is increased Reluctance of magnetic path is decreased Magnetising current is greatly increased Hysteresis loss is decreased Eddy current is increased Reluctance of magnetic path is decreased Magnetising current is greatly increased ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer the resistance between its primary and secondary is Zero 1000 ohms Infinite 1 ohm Zero 1000 ohms Infinite 1 ohm ANSWER DOWNLOAD EXAMIANS APP
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