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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