SSC JE Electrical 2019 with solution SET-2
The total number of possible phase sequences for a three-phase AC system is ____

0
2
1
3

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SSC JE Electrical 2019 with solution SET-2
____ Lamps are used to light up sports stadiums?

LED lamps
Sodium vapor lamps
Fluorescent lamps
Incandescent lamps

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SSC JE Electrical 2019 with solution SET-2
Four types of power plants have been given out of which three are alike in some manner and one is different. Select the odd one?

Hydro-electric power plant
Nuclear power plant
Solar power plant
Thermal power plant

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SSC JE Electrical 2019 with solution SET-2
IL = Load Current, then the relation between these currents for a DC series generator is

IL ÷ Ise ÷ Ia
IL ÷ Ise = Ia
IL = Ise = Ia
IL = Ise + Ia

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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?

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

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SSC JE Electrical 2019 with solution SET-2
The combined inductance of two coils connected in a series is 0.6H and 0.1H, depending on the relative directions of the currents to the coils. If one of the coils when isolated has a self-inductance of 0.2 H, then calculate the natural inductance?

0.015 H
0.15 H
0.125 H
1.5 H

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