Category: Polyphase Induction Motors

A. zero
B. more than the number of poles in stator
C. less than number of poles in stator
D. equal to number of poles in stator

A. 0.04%
B. 0.4%
C. 4%
D. 14%

A. will continue running burning its one phase
B. will continue running burning its two phases
C. will stop and carry heavy current causing permanent damage to its winding
D. will continue running without any harm to the winding

A. rotor conductor ends are short-circuited through slip rings
B. rotor conductors are short-circuited through end rings
C. rotor conductors are kept open
D. rotor conductors are connected to insulation

A. star connected only
B. delta connected only
C. A. and B. both
D. none of the above

A. low
B. negligible
C. same as full-load torque
D. slightly more than full-load torque

A. three phase transformers
B. compound generators
C. D.C. series motors
D. induction motors

A. two rotors moving in oppsite direction
B. two parallel windings in stator
C. two parallel windings in rotor
D. two series windings in stator

A. efficiency
B. power factor
C. frequency
D. output

A. D.C. series motor
B. D.C. shunt motor
C. universal motor
D. none of the above