Top 150+ Solved Single Phase Induction Motor MCQ Questions Answer
Q. For which of the applications a reluctance motor is preferred ?
a. Electric shavers
b. Refrigerators
c. Signalling and timing devices
d. Lifts and hoists
Q. The motor used on small lathes is usually
a. universal motor
b. D.C. shunt motor
c. single-phase capacitor run motor
d. 3-phase synchronous motor
Q. Which of the following motors is preferred for tape-recorders ?
a. Shaded pole motor
b. Hysteresis motor
c. Two value capacitor motor
d. Universal motor
Q. A single-phase induction motor is
a. inherently self-starting with high torque
b. inherently self-starting with low torque
c. inherently non-self-starting with low torque
d. inherently non-self-starting with high torque
Q. A universal motor can run on
a. A.C. only
b. D.C. only
c. either A.C. or D.C.
d. none of the above
Q. Which of the following single-phase motors is suitable for timing and controlpurposes ?
a. Reluctance motor
b. Series motor
c. Repulsion motor
d. Universal motor
Q. Single phase induction motor usually operates on
a. 0.6 power factor lagging
b. 0.8 power factor lagging
c. 0.8 power factor leading
d. unity power factor
Q. In split-phase motor iauxiliary winding is of
a. thick wire placed at the bottom of the slots
b. thick wire placed at the top of the slots
c. thin wire placed at the top of the slots
d. thin wire placed at the bottom of the slots
Q. Which of the following motors will operate at high power factor ?
a. Shaped pole motor
b. Split phase motor
c. Capacitor start motor
d. Capacitor run motor
Q. In a two value capacitor motor, the capacitor used for running purposes is
a. air capacitor
b. paper spaced oilfilled type
c. ceramic type
d. a.c. electrolytic type
Q. Which of the following motors can be run on AC. as well as D.C. supply ?
a. Universal motor
b. Repulsion motor
c. Synchronous motor
d. Reluctance motor
Q. In A.C. series motor compensating winding is employed to
a. reduce the effects of armature reaction
b. increase the torque
c. reduce sparking at the brushes
d. none of the above
Q. Which of the following single-phase induction motors is generally used in timephonographs ?
a. Resistance start
b. Capacitor start capacitor run
c. Shaded pole
d. Universal
Q. Which of the following motors has highest starting torque ?
a. Repulsion motor
b. Shaped pole motor
c. Capacitor-start motor
d. Split-phase motor