A change of 4% of supply voltage to an induction motor will produce a change of approximately ________?
A. 4% in the rotor torque
B. 8% in the rotor torque
C. 12% in the rotor torque
D. 16% in the rotor torque
A. 4% in the rotor torque
B. 8% in the rotor torque
C. 12% in the rotor torque
D. 16% in the rotor torque
A. noload test
B. blocked rotor test
C. stator resistance test
D. all of the above
A. double cage rotor
B. wound rotor
C. short-circuited rotor
D. any of the above
A. slip
B. rotor current
C. running torque
D. line voltage
A. external inductance to the rotor
B. external resistance to the rotor
C. external capacitance to the rotor
D. both resistance and inductance to rotor
A. supply frequency
B. supply voltage
C. copper losses in motor
D. none of the above
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