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
Free running
Notching up

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SSC JE Electrical 2019 with solution SET-2
In the salient pole of the phase synchronous machine, the rotor will have

Smaller diameter, smaller axial length
Larger diameter, larger axial length
Larger diameter, shorter axial length
Smaller diameter, larger axial length

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SSC JE Electrical 2019 with solution SET-2
Four relations have been given. Select the correct relation?

Flux = MMF/Permeance.
MMF = Flux/Reluctance
MMF = Flux/Reluctance
MMF = Flux/Permeance

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SSC JE Electrical 2019 with solution SET-2
If the AC voltage and current are given by the following expressions?
v = 200sin (314t — 60°)
i = 50sin (720t), then what is the phase relation between them?

Can’t be determined
Voltage lags current by 60°
Voltage leads current by 60°
Voltage and current are in phase

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