SSC JE Electrical 2019 with solution SET-1
 The average value of a sinusoidal wave is:

2 × maximum value
√2 × maximum value
0.5 × maximum value
0.637 × maximum value

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SSC JE Electrical 2019 with solution SET-1
 P = ρQHg is the water power equation. Head ‘H’ is measured in meter ‘g’ gravity constant is measured in meter/second square, then the measuring unit of ‘Q’, the flow rate of water is:

Square meter per second
Meter per second
Cubic meter per second
Meter per hour

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SSC JE Electrical 2019 with solution SET-1
 What is the reason behind using a centrifugal switch in a single-phase induction motor?

To protect the motor from overloading
To cut-off the starting winding at an appropriate instant
To out in the capacitor during running conditions
To improve the starting performance of the motor

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SSC JE Electrical 2019 with solution SET-1
 Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

40Ω
20Ω
30Ω
10Ω

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SSC JE Electrical 2019 with solution SET-1
 In the full-wave rectifier circuit shown in the figure, the diodes that conduct when the positive half-wave of AC signal applied are

D2, D3
D1, D2
D3, D4
D4, D1

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