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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Caking coals are those which

Burn completely
Burn freely
Show little or no fusing action
Form lumps or masses of coke

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Steam Boilers, Engines, Nozzles and Turbines
The biggest size of thermal power unit operating in India is

500 MW
60 MW
30 MW
100 MW

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Steam Boilers, Engines, Nozzles and Turbines
The height of chimney in a power plant is governed by

Limitation of construction facilities
Control of pollution
Quantity of flue gases to be handled
The draft to be created

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Steam Boilers, Engines, Nozzles and Turbines
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.

Less than
More than
Equal to
None of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
The cylinder condensation or missing quantity may be reduced by

All of these
The efficient steam jacketing of the cylinder walls
Keeping the expansion ratio small in each cylinder
Superheating the steam supplied to the engine cylinder

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of cylindrical shell of the Lancashire boiler is of the order of

1.75 to 2.75 m
2 to 4 m
1 to 1.25 m
1 to 1.75 m

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