A. is opposite to that of brush shift
B. is the same as that of brush shift
C. is independent of brush shift
Related Mcqs:
- In case of a shaded pole motor the direction of rotation of the motor is__________?
A. from main pole to shaded pole
B. from shaded pole to main pole
C. either of the above depending on voltage
D. either of the above depending on power factor - The direction of rotation of an hysteresis motor is determined by____________?
A. interchanging the supply leads
B. position of shaded pole with respect to main pole
C. retentivity of the rotor material
D. none of these - Direction of rotation of a split phase motor can be reversed by reversing the connection of__________?
A. running winding only
B. starting winding only
C. either A. or (b)
D. both A. and (b) - The direction of rotation of universal motor can be reversed the by reversing the flow of current through__________?
A. armature winding
B. field winding
C. either armature winding or field winding
D. none of the above - To reverse the direction of rotation of acapacitor start motor while it is running we should___________?
A. disconnect motor from the supply till it stops then reconnect it to supply with reversed connection of main or auxiliary winding
B. disconnect motor from supply and immediately reconnect it to supply with reversed connections of the main winding
C. reverse the direction of connection of the auxiliary winding and after motor comes to rest then connect auxiliary winding to the supply
D. reverse the direction of connections of the auxiliary winding and immediately connect it to supply - Which of the following statements regarding repulsion-start induction motor is incorrect ?
A. It requires more maintenance of commutator and other mechanical devices
B. It makes quite a bit of noise on starting
C. In fractional horse power motors, it has replaced the capacitor motors
D. It is not easily reversed - In repulsion motor, maximum torque is developed when____________?
A. brush axis is at 45° electrical to the field axis
B. brush axis coincides with the field axis
C. brush axis is at 90° electrical to the field axis
D. none of the above - Speed torque characteristic of a repulsion induction motor is similar to that of a D.C____________?
A. shunt motor
B. series motor
C. compound motor
D. separately excited motor - The purpose of stator winding in the compensated repulsion motor is to_____________?
A. provide mechanical balance
B. improve power factor and provide better speed regulation
C. prevent hunting in the motor
D. eliminate armature reaction - A repulsion motor is equipped with__________?
A. slip rings
B. commutator
C. both A. and (b)
D. none of the above
