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?

Braking
Notching up
Coasting
Free running

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SSC JE Electrical 2019 with solution SET-2
For indoor lighting the range of space : height is

3 :4
1 : 2
2 : 3
5 : 6

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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
4
2

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SSC JE Electrical 2019 with solution SET-2
The flux while crossing air gap tends to bulge outwards, thereby increasing the effective area of the gap, this effect is known as

Stroboscopic effect
Fringing effect
Hall effect
Hopkinson’s effect

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