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Chapter 3 AC Motors MCQs

1. . Single phase motor has supply.

(A) Single phase


(B) Two phase


(C) Three phase


(D) Any of above




2. . Is the rotating part of single phase motors?

(A) Rotor


(B) Stator


(C) Armature


(D) Coil




3. . Starting winding is placed on of single phase motor.

(A) Rotor


(B) Stator


(C) Armature


(D) Field coils




4. . Single phase motor is categorized by .

(A) Construction


(B) Starting method


(C) Size


(D) a and b




5. . Motor has no starting torque.

(A) Single phase


(B) Two phase


(C) Three phase


(D) None




6. . Single phase motor .

(A) Self starting


(B) Is not self starting


(C) Any of above


(D) None




7. . Split phase motor has ……… between the stator windings.

(A) 30°


(B) 90°


(C) 120°


(D) 180°




8. . There are ……… stator windings of split phase motor.

(A) Two


(B) Three


(C) Both a and b


(D) None of above




9. . Shaded pole motor has .

(A) Low starting torque


(B) Low efficiency


(C) Low overload capacity


(D) All of above




10. . Main winding of split phase motor has ……… resistance.

(A) Low


(B) High


(C) Constant


(D) Varying




11. . Main winding of ……… has high reluctance.

(A) Split phase


(B) Shaded pole


(C) Induction


(D) Reluctance




12. . Winding of split phase motor has high resistance.

(A) Main


(B) Starting


(C) Rotor


(D) Field




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