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.Management Sciences
Category: Single Phase Induction Motors
The starting winding of a single-phase motor is placed in_________?
A. armature
B. field
C. rotor
D. stator
In a ceilingfan employing capacitor run motor____________?
A. secondary winding surrounds the primary winding
B. primary winding surrounds the secondary winding
C. both are usual arrangements
D. none of the above
Torque developed by a single phase induction motor at starting is_____________?
A. pulsating
B. uniform
C. none of the above
D. nil
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)
Single phase induction motor usually operates on__________?
A. 0.6 power factor lagging
B. 0.8 power factor lagging
C. 0.8 power factor leading
D. unity power factor
The electric motor used in portable drills is__________?
A. capacitor run motor
B. hysteresis motor
C. universal motor
D. repulsion motor
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
Which of the following motors is used in mixies ?
A. Repulsion motor
B. Reluctance motor
C. Hysteresis motor
D. Universal motor
In a split phase motor, the running winding should have?
A. high resistance and low inductance
B. low resistance and high inductance
C. high resistance as well as high inductance
D. low resistance as well as low inductiance
In split-phase motor auxiliary winding is of___________?
A. thick wire placed at the bottom of the slots
B. thick wire placed at the top of the slots
C. thin wire placed at the top of the slots
D. thin wire placed at the bottom of the slots
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