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
A. Repulsion motor
B. Shaped pole motor
C. Capacitor-start motor
D. Split-phase motor
Which of the following motors has highest starting torque ? Read More »
Single Phase Induction Motors A. Universal motor
B. Repulsion motor
C. Synchronous motor
D. Reluctance motor
Which of the following motors can be run on AC. as well as D.C. supply ? Read More »
Single Phase Induction Motors A. reduce the effects of armature reaction
B. increase the torque
C. reduce sparking at the brushes
D. none of the above
In A.C. series motor compensating winding is employed to_____________? Read More »
Single Phase Induction Motors A. air capacitor
B. paper spaced oil filled type
C. ceramic type
D. a.c. electrolytic type
