The rotor developed by a single-phase motor at starting is___________?
(A) more than i.he rated torque
(B) rated torque
(C) less than the rated torque
(D) zero
In a split phase motor____________?
(A) the starting winding is connected through a centrifugal switch
(B) the running winding is connected through a centrifugal switch
(C) both starting and running windings are connected through a centrifugal switch
(D) centrifugal switch is used to control supply voltage
If the capacitor of a single-phase motor is short-circuited_________?
(A) the motor will not start
(B) the motor will run
(C) the motor will run in reverse direction
(D) the motor will run in the same direction at reduced r.p.m
In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to_______________?
(A) improve power factor
(B) increase overload capacity
(C) reduce fluctuations in torque
(D) to improve torque
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 capacitor start single-phase motors____________?
(A) current in the starting winding leads the voltage
(B) current in the starting winding lags the voltage
(C) current in the starting winding is in phase with voltage in running winding
(D) none of the above
Which of the following motors is inherently self starting ?
(A) Split motor
(B) Shaded-pole motor
(C) Reluctance motor
(D) None of these
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
A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will______________?
(A) start and then stop
(B) start and run slowly
(C) start and run at rated speed
(D) not start at all
Which of the following motors is used in mixies ?
(A) Repulsion motor
(B) Reluctance motor
(C) Hysteresis motor
(D) Universal motor