SSC JE Electrical 2019 with solution SET-2
During the ______ period the power supply to the motor is cut-off and the train is allowed to run due to its own momentum?

Coasting
Braking
Notching up
Free running

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SSC JE Electrical 2019 with solution SET-2
Lower efficiency, lower power factor, are the features of which of the following motors?

Three-phase synchronous motor
Three-phase induction motor
Single-phase induction motor
DC shunt motor

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SSC JE Electrical 2019 with solution SET-2
The number of brushes required for a 4 pole, lap wound DC machine is

4
8
1
2

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