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Single Phase Motors

Single Phase Motors
The single phase shaded pole motor has _____

High starting torque
High power factor
Wound rotor
Squirrel cage motor

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Single Phase Motors
The speed control of universal motor used for sewing machines is by

Friction
Varying the resistance
Centrifugal mechanism
Tapping the field

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Single Phase Motors
The capacitor start, capacitor run motor is used in thode applications where _____

Noisy operation is not important
High starting torque is required
Silence is important
None of the listed here

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Single Phase Motors
The main winding and starting winding of a single phase induction motor are connected in _______ across the supply.

None of the listed here
Parallel
Series
Series-parallel

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Single Phase Motors
If starting winding of a single-phase induction motor is left in the circuit, it will

spark at light loads
run slower
draw excessive current and overheat
run faster

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Single Phase Motors
In case of a reluctance motor, when the load is increased so that it cannot maintain synchronous speed the motor will

Run as induction motor
Fall out of synchronism and come to stand still
Become unstable
Draw excessive armature current and may burn out

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