A. spark excessively
B. have poor efficiency
C. have poor power factor
D. all of the above
A. damage to the starting winding
B. damage to the centrifugal switch
C. overloading of running winding
D. none of the above
A. high starting torque
B. low starting torque
C. medium starting torque
D. very high starting torque
A. A.C. motor
B. D.C. shunt motor
C. D.C. series motor
D. none of the above
A. a single turn of heavy wire which is in parallel with running winding
B. a single turn of heavy copper wire which is short-circuited and carries only induced current
C. a multilayer fine gauge copper wire in parallel with running winding
D. none of the above
A. Induction motor
B. Three-phase series motor
C. Schrage motor
D. Hysteresis motor
A. slip rings
B. commutator
C. both A. and (b)
D. none of the above