SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1
The function of condenser in a Thermal power plant is:

Condense used steam into water

Condense water

Purify steam

Purify water

Condense used steam into water

Condense water

Purify steam

Purify water

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SSC JE Electrical 2019 with solution SET-1
If the copper loss of a transformer at half full load is 400 W, then the copper loss corresponding to full load is

400 W

800 W

1600 W

1200 W

400 W

800 W

1600 W

1200 W

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SSC JE Electrical 2019 with solution SET-1
A synchronous motor runs at 600rpm, which of the following case is true?

P = 8, f = 50 Hz

P = 10, f = 60 Hz

P= 12, f = 50 Hz

P = 12, f = 60 Hz

P = 8, f = 50 Hz

P = 10, f = 60 Hz

P= 12, f = 50 Hz

P = 12, f = 60 Hz

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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

0.5 × maximum value

√2 × maximum value

2 × maximum value

0.637 × maximum value

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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 lags current by 30°

Voltage and current are in phase with each other

Voltage leads current by 45°

Voltage lags current by 45°

Voltage lags current by 30°

Voltage and current are in phase with each other

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SSC JE Electrical 2019 with solution SET-1
Lamp efficiency is measured in

Lux/watt

Lumen/watt

Candela/watt

Lumen/lux

Lux/watt

Lumen/watt

Candela/watt

Lumen/lux

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