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

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

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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?

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

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SSC JE Electrical 2019 with solution SET-2
______braking is used where the load on the motor has very high inertia (e.g. in electric trains)?

Coasting
Rheostatic
Regenerative
Plugging

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

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