SSC JE Electrical 2019 with solution SET-1
 Split-phase, capacitor, and shaded-pole single-phase motors classified as:

Un-excited synchronous motors
1-phase induction motors
Repulsion motors
A.C. series motors

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SSC JE Electrical 2019 with solution SET-1
 What is the reason behind using a centrifugal switch in a single-phase induction motor?

To out in the capacitor during running conditions
To protect the motor from overloading
To cut-off the starting winding at an appropriate instant
To improve the starting performance of the motor

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SSC JE Electrical 2019 with solution SET-1
If the field of the synchronous motor is under excited the power factor will be:

Zero
Unity
Leading
Lagging

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