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Single Phase Motors

Single Phase Motors
The single phase series motor can operate on

None of the listed here
Both AC and DC
DC only
AC only

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Single Phase Motors
The capacitor start, capacitor run motor has _______

No centrifugal switch
Low efficiency
Noisy operation
Low power factor

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Single Phase Motors
A 2 HP dc series motor will weigh ______2 HP single phase series motor.

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

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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.

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

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Single Phase Motors
In repulsion motor, maximum torque is developed when

None of these
brush axis is at 90° electrical to the field axis
brush axis coincides with the field axis
brush axis is at 45° electrical to the field axis

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Single Phase Motors
Burning out of winding is due to

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

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MORE MCQ ON Single Phase Motors

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