Electrical Engineering Questions And Answers :: Single Phase Induction Motors: part4



Electrical Engineering : Single Phase Induction Motors QUESTIONS AND ANSWERS :: part4 : 11 to 15

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

11.If starting winding of a single-phase induction motor is left in the circuit, it will

run faster
spark at light loads
draw excessive current and overheat
run slower

12.Which of the following statements regarding reluctance-start motor is incorrect ?

It is similar to reluctance motor
It is basically an induction motor and not a synchronous one
So far as its basic working principle is concerned, it is similar to shaded pole motor
the air-gap between rotor and salient poles is non- uniform

13.Which of the following statements regarding two value capacitor motor is incorrect ?

It is a reversing motor
It is preferred to permanent-split single-value capacitor motor where frequent reversals are required
It has low starting as well as rush�ing currents
It has high starting torque

14.Which of the following statements regarding repulsion-start induction motor is incorrect ?

It requires more maintenance of commutator and other mechanical devices
It makes quite a bit of noise on starting
In fractional horse power motors, it has replaced the capacitor motors
It is not easily reversed

15.A.C. series motor as compared to D.C. series motor has

smaller brush width
less number of field turns
more number of armature turns
less air gap

More Single Phase Induction Motors QUESTIONS AND ANSWERS available in next pages

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