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?

Notching up
Braking
Free running
Coasting

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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

1
8
2
4

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SSC JE Electrical 2019 with solution SET-2
Observe the figure and find the correct relation from the four given options?

i1 + i2 + i4 = i3 + i5 + i6
i1 + i2 + i3 = i4 + i5 + i6
i4 + i2 + i3 = i1 + i5 + i6
i1 + i2 + i6 = i4 + i5 + i3

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