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Generation of Electrical Energy

Generation of Electrical Energy
In coal preparation plant, magnetic separators are used to remove

Sand
Clinkers
Dust
Iron particles

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Generation of Electrical Energy
The isentropic expansion of steam through nozzle for the steam initially dry saturated at inlet is approximated by equation.

pv1A = C
pv = C
pv
pv1i = C

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Generation of Electrical Energy
For which of the following power plants highly skilled engineers are required for running the plants?

Nuclear power plant
Diesel power plant
Solar power plant
Hydroelectric plant

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Generation of Electrical Energy
Rankine cycle efficiency of a good steam power plant may be in the range of

15 to 20 percent
35 to 45 percent
70 to 80 percent
90 to 95 percent

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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 increase the steam temperature
to reduce the boiler pressure
None of these

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Generation of Electrical Energy
Example of overfeed type stoker is

all of these
travelling grate
chain grate
spreader

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