SSC JE Electrical 2019 with solution SET-1
 In an AC network, the load connected is (10 + j10). The phase relation between the voltage applied and the current through the load is:

Voltage leads current by 45°
Voltage lags current by 45°
Voltage and current are in phase with each other
Voltage lags current by 30°

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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:

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

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

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SSC JE Electrical 2019 with solution SET-1
_______is a tube that brings water to turbines

Forebay
Penstock
Trash rack
Spillway

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SSC JE Electrical 2019 with solution SET-1
 Which of the following plants experiences chain reactions?

Hydro-electric power plant
Nuclear power plant
Thermal power plant
Gas power plant

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

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

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