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)