* The primary and secondary of a transformer are ________ coupled but _______ connected.
A. magnetically, not electrically
B. electrically, not magnetically
C. magnetically, also magnetically
D. electrically, also electrically
Electrical-Matrix
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* While comparing potential transformer to an auto transformer, a potential transformer transfers power ________
A. conductively
B. inductively
C. both conductively as well as inductively
D. electromagnetic induction
07/01/2024
18/02/2023
ACB checking....
Which of the following core has linear characteristics ?
A. CRGO core
B. Iron core
C. Air core
D. Steel core
05/11/2022
A DC generator without commutator is a........
A. AC generator
B. DC motor
C. DC generator
D. Induction motor
Hysteresis loss will depends on.......
A. f
B. f²
C. f³
D. f¹'⁶
Ward-Leonard control is basically a ___________ control method.
A. Field control.
B. Armature resistance control.
C. Armature voltage control.
D. Field diverter control.
If field current is decreased in shunt dc motor, the speed of the motor...........
A. remains same.
B. increases.
C. decreases.
D. none of the above.
05/10/2022
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