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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Steam exhaust from high pressure turbine is reheated in

Economizer
Boiler drums
A separate coil located in convection path
Superheater tubes

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Steam Boilers, Engines, Nozzles and Turbines
Cut-off ratio is the ratio of

Clearance volume to the volume at cut-off
Volume at cut-off to the swept volume
Swept volume to the volume at cut-off
Volume at cut-off to the clearance volume

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of a cylindrical shell of a Scotch marine boiler varies from

1.5 to 2 m
3.5 to 4.5 m
2.5 to 3.5 m
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The value of the reheat factor varies from

1.2 to 1.6
1.08 to 1.10
1.02 to 1.06
1.6 to 2

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Steam Boilers, Engines, Nozzles and Turbines
In a Tandem type compound engine, the high pressure and low pressure cylinders

Have common piston rod
Have separate piston rods
Are set at 90°
Are set in V-arrangement

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Steam Boilers, Engines, Nozzles and Turbines
A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called

None of these
Superheater
Blow off cock
Stop valve

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