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Generation of Electrical Energy

Generation of Electrical Energy
The capacity of large turbo-generators varies from

50 to 300 MW
20 to 100 MW
100 to 500 MW
70 to 400 MW

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Generation of Electrical Energy
Blowing down of boiler water is the process

None of these
to reduce the boiler pressure
to increase the steam temperature
to control the solid concentration in the boiler water by removing some of the concentrated saline water

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Generation of Electrical Energy
The blade of gas turbine rotor are made of

Carbon steel
Stainless steel
High nickel alloy
High alloy steel

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Generation of Electrical Energy
Francis turbine is usually used for

Low heads
Any of these
High heads
Medium heads

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Generation of Electrical Energy
The output of a solar cell is of the order of

1 W
5 W
20 W
10 W

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Generation of Electrical Energy
In which of the following power plants the maintenance cost is usually high

Hydroelectric plant
Thermal power plant
Nuclear power plant
Diesel power station

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