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Generation of Electrical Energy

Generation of Electrical Energy
Evaporative type of condenser has

water in pipes surrounded by steam
either (A) or (B)
None of these
steam in pipes surrounded by water

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Generation of Electrical Energy
The ideal load factor should be

1
0.8
0.5
0.2

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

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

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Generation of Electrical Energy
In throttle governing

There no effect on heat drop
None of these
Lesser heat drop is available
Larger heat drop is available

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Generation of Electrical Energy
Economiser improve the boiler efficiency by

10 to 12 %
4 to 10%
13 to 15 %
1 to 5 %

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

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

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