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Generation of Electrical Energy

Generation of Electrical Energy
The efficiency of a modern boiler using coal and heat recovery equipment is about

85 to 90%
25 to 30%
40 to 50%
65 to 70%

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

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

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Generation of Electrical Energy
In a power station, diversity factor _______ as we move from consumer to power station

Decreases
Remains same
None of these
Increases

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Generation of Electrical Energy
The overall efficiency of thermal power plant is equal to

Rankine cycle efficiency
Regenerative cycle efficiency
Carnot cycle efficiency
Bioler efficiency × turbine efficiency × generator efficiency

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Generation of Electrical Energy
The draught produced by steel chimney as compared to that produced by brick chimney for the same height is

More
May be more or less
Same
Less

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Generation of Electrical Energy
Which of the following power plants need the least period for installation?

Diesel power plant
Hydroelectric plant
Thermal power plant
Nuclear power plant

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