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 A. 200 to 250 W
B. 250 to 500 W
C. 50 to 150 W
D. 10 to 20 W
The wattage rating for a ceiling fan motor will be in the range_________? Read More »
Single Phase Induction Motors A. 100 to 150 W
B. 40 to 75 W
C. 10 to 30 W
D. 5 to 10 W
The wattage of motor for driving domestic sewing machine will be around__________? Read More »
Single Phase Induction Motors A. End play
B. Air gap
C. Insulation in rotor
D. Balancing of rotor
In case of high speed universal motor which of the following needs more attention? Read More »
Single Phase Induction Motors A. good power factor
B. high efficiency
C. minimum cost
D. high starting torque
The repulsion-start induction-run motor is used because of___________? Read More »
Single Phase Induction Motors 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
In case of a shaded pole motor the direction of rotation of the motor is__________? Read More »
Single Phase Induction Motors A. Resistance start
B. Capacitor start capacitor run
C. Shaded pole
D. Universal
