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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The diameter of superheated tubes in a locomotive boiler is

13 mm
130 mm
230 mm
31 mm

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Steam Boilers, Engines, Nozzles and Turbines
A device used to heat feed water by utilizing the heat in me exhaust flue gases before leaving through the chimney, is known as

Fusible plug
Stop valve
Economizer
Superheater

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Steam Boilers, Engines, Nozzles and Turbines
Sublimation region is the region where

Solid and vapor phases are in equilibrium
Liquid and vapor phases are in equilibrium
Solid, liquid and vapor phases are in equilibrium
Solid and liquid phases are in equilibrium

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Steam Boilers, Engines, Nozzles and Turbines
During polytropic process

Work is done
Steam may be wet, dry or superheated after expansion
All of these
Heat transfer takes place across cylinder walls

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Steam Boilers, Engines, Nozzles and Turbines
The length of Cornish boiler varies from

7 to 9 m
3 to 5 m
5 to 7.5 m
2 to 4.5 m

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Steam Boilers, Engines, Nozzles and Turbines
Lancashire boiler has __________ internal flue tubes.

Four
Two
Three
One

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