Multiple Choice Question (MCQ) of Induction Motors page-7
61. Single phase induction motor can be made self-starting by
a) Adding series combination of capacitor and auxiliary winding in parallel with the main winding
b) Adding an auxiliary winding in parallel with the main winding
c) Adding an auxiliary winding in series with a capacitor and the main winding
d) None of these
Ans: (a)
a) Reluctance motor
b) Hysteresis motor
c) Universal motor
d) All of the above
Ans: (c)
a) Universal motor
b) Split phase motor
c) Synchronous motor
d) All have identical starting torque
Ans: (a)
a) Large starting torque
b) Zero starting torque
c) Medium starting torque
d) Very small starting torque
Ans: (b)
a) Open circuit in auxiliary winding
b) Open circuit in many winding
c) Blown fuses
d) Any of the above
Ans: (d)
a) Overloading
b) Short winding
c) Bearing troubles
d) Any of above
Ans: (d)
a) Auxiliary winding
b) Mani winding
c) Either (a) or (b)
d) Speed can not be reversed
Ans: (c)
a) Overload
b) Low frequency
c) Low voltage
d) Any of these
Ans: (d)
a) Units
b) 0.6 leading
c) 0.8 leading
d) 0.6 lagging
Ans: (d)
a) Capacitor run motor
b) Capacitor start motor
c) Reluctance motor
d) All have almost the same cost
Ans: (b)
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