A. Ball bearings
B. Cast iron bearings
C. Bush bearings
D. None of the above
A. synchronous speed
B. below synchronous speed
C. above synchronous speed
D. any of the above
A. squirrel-cage induction motors only
B. slip ring induction motors only
C. both A. and (b)
D. none of the above
A. 0.2 lagging
B. 0.2 leading
C. 0.5 leading
D. unity
A. will continue running burning its one phase
B. will continue running burning its two phase
C. will stop and carry heavy current causing permanent damage to its winding
D. will continue running without any harm to the winding
A. single phase motors
B. variable speed motors
C. low horse power motors
D. high speed motors
A. double cage rotor
B. wound rotor
C. short-circuited rotor
D. any of the above