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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as

Blow off cock
Stop valve
Fusible plug
Superheater

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Steam Boilers, Engines, Nozzles and Turbines
Tertiary air is the air used to

Cool the scanners
Transport and dry the coal
Provide air around burners for obtaining optimum combustion
Convert CO (formed in lower zone of furnace) into CO₂ at higher zone

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Steam Boilers, Engines, Nozzles and Turbines
The diameters of fire tubes and superheater tubes in locomotive boiler are

47.5 mm, 130 mm
65.5 mm, 210 mm
24.5 mm, 65 mm
32.5 mm, 180 mm

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Steam Boilers, Engines, Nozzles and Turbines
In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is

0.067 bar
0.053 bar
0.06 bar
0.007 bar

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Steam Boilers, Engines, Nozzles and Turbines
The capacity of induced draft fan compared to forced draft fan in a boiler is

Same
More
Less
Less or more depending on size of boiler

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Steam Boilers, Engines, Nozzles and Turbines
The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.

Less
More
None of these
Same

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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