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 If a transformer core has air gaps, then, _________ Reluctance of magnetic path is decreased Hysteresis loss is decreased Magnetising current is greatly increased Eddy current is increased Reluctance of magnetic path is decreased Hysteresis loss is decreased Magnetising current is greatly increased Eddy current is increased ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer with a 110 V primary has a 15:1 turns ratio. The load resistance, RL, is 120 . What is the approximate voltage across the load? 7.3 V 73 V 880 V 88 V 7.3 V 73 V 880 V 88 V ANSWER DOWNLOAD EXAMIANS APP
Transformers In which of the following transformer part of primary winding also serves as the secondary winding? Auto transformer Step-up transformer Potential transformer Current transformer Auto transformer Step-up transformer Potential transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Which motor is preferred for use in mines where explosive gases exist? Induction motor Synchronous motor Shunt motor Air motor Induction motor Synchronous motor Shunt motor Air motor ANSWER DOWNLOAD EXAMIANS APP
Transformers A no-load test is performed on a transformer to determine core loss magnetising current and loss magnetising current efficiency copper loss core loss magnetising current and loss magnetising current efficiency copper loss ANSWER DOWNLOAD EXAMIANS APP
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