Transformers In case of 3-phase induction motors, plugging means interchanging two supply phases for quick stopping starting the motor on load which is more than the rated load pulling the motor directly on line without a starter locking of rotor due to harmonics interchanging two supply phases for quick stopping starting the motor on load which is more than the rated load pulling the motor directly on line without a starter locking of rotor due to harmonics ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers upto a rating of 500 kVA 1000 kVA 3000 kVA 250 kVA 500 kVA 1000 kVA 3000 kVA 250 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because A static device Uses capacitive coupling Uses inductive coupling Uses electric coupling A static device Uses capacitive coupling Uses inductive coupling Uses electric coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers Harmonics in transformer result in increased I2R losses All of the listed here increased core losses magnetic interference with communication circuits increased I2R losses All of the listed here increased core losses magnetic interference with communication circuits ANSWER DOWNLOAD EXAMIANS APP
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 50 W 100 W 200 W 400 W 50 W 100 W 200 W 400 W ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following insulating materials can withstand the highest temperature safely? Mica Cellulose Asbestos Glass fibre Mica Cellulose Asbestos Glass fibre ANSWER DOWNLOAD EXAMIANS APP
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