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Single Phase Motors

Single Phase Motors
Torque developed by a single phase induction motor at starting is

Pulsating
Nil
None of the listed here
Uniform

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Single Phase Motors
The electric motor used in portable drills is

Hysteresis motor
Universal motor
Repulsion motor
Capacitor run motor

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Single Phase Motors
If a single phase induction motor runs slower than normal, the most likely defect is

short-circuit in the winding
open-circuit in the winding
worn bearings
None of these

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Single Phase Motors
In repulsion motor direction of rotation of motor

is independent of brush shift
is opposite to that of brush shift
is the same as that of brush shift

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Single Phase Motors
Capacitor motors _______resistance split phase induction motors.

Are less costly than
Are costlier than
Cost about the same as
Poor starting torque than

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Single Phase Motors
Which of the following applications always have some load whenever switched on?

All of the listed here
Fan motors
Piston drills
Vaccum cleaners

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