A. is self-starting
B. is constant speed motor
C. needs no D.C. excitation
D. all of the above
A reluctance motor____________? Read More »
Single Phase Induction Motors A. Split phase motor
B. Universal motor
C. Hysteresis motor
D. Shaded pole motor
Which motor is normally free from mechanical and magnetic vibrations ? Read More »
Single Phase Induction Motors A. fans
B. blowers
C. sound equipment
D. mixer grinders
A. armature winding
B. field winding
C. either armature winding or field winding
D. none of the above
A. high inductance of field and armature circuits
B. induced current in rotor due to variations of flux
C. fine copper wire winding
D. none of the above
A. Split phase motor
B. Reluctance motor
C. Hysteresis motor
D. Universal motor
In which single-phase motor, the rotor has no teeth or winding ? Read More »
Single Phase Induction Motors A. gear trains
B. V-belts
C. brakes
D. chains
The speed of a universal motor is generally reduced by using_________? Read More »
Single Phase Induction Motors A. Universal motor
B. Repulsion motor
C. Capacitor motor
D. All single phase motors have zero starting torque
Which of the following single-phase motors has relatively poor starting torque ? Read More »
Single Phase Induction Motors A. Capacitor run motor
B. Shaded pole motor
C. Hysteresis motor
D. Schrage motor
Which of the following motors can be used for unity power factor ? Read More »
Single Phase Induction Motors A. Gradually varying load
B. Non-reversing, no-load start
C. Reversing, light start
D. Reversing, heavy start
Which type of load is offered by cranes and hoists ? Read More »
Single Phase Induction Motors