A. resistance rise method
B. thermometer method
C. embedded temperature method
D. all above methods
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. resistance is inserted in the stator
B. reduced voltage is applied to the stator
C. resistance is inserted in the rotor
D. applied voltage perl stator phase is 57.7% of the line voltage
A. e.m.f. injection in rotor eueuit
B. Changing the number of poles
C. Cascade operation
D. None of the above
A. three phase transformers
B. compound generators
C. D.C. series motors
D. induction motors
A. power factor at starting is high as compared to that while running
B. power factor at starting is low as compared to that while running
C. power factor at starting in the same as that while running
A. inadequate motor wiring
B. poorely regulated power supply
C. any one of the above
D. none of the above