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Single Phase Motors

Single Phase Motors
The resistance split phase induction motor has ______ starting torque .

Moderate
High
Very low
None of the listed here

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Single Phase Motors
When a universal motor is operated on no load, its speed is limited by

Armature reaction
Supply voltage frequency
Windage and friction
Weight of the armature

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Single Phase Motors
In split phase motor main winding is of

thin wire placed at the bottom of the slots
thick wire placed at the top of the? slots
thick wire placed at the bottom of the slots
thin wire placed at the top of the slots

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Single Phase Motors
Burning out of winding is due to

open circuiting of capacitor
capacitor value hiving changed
short circuited capacitor
None of these

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Single Phase Motors
For the same rating, the efficiency of a single phase induction motor is _______ that of 3-phase induction motor.

Less than
None of the listed here
The same as
More than

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Single Phase Motors
Which of the following application make use of a universal motor?

Floor polishing machine
Portable tools
Lathe machines
Oil expeller

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