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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The basic purpose of drum in boiler is to

Remove salts from water
Serve as storage of steam
Serve as storage of feed water for water wall
Separate steam from water

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of flue tube in a Cornish boiler is _________ that of the shell.

One-third
Three-fifth
Two-fifth
One-fourth

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Steam Boilers, Engines, Nozzles and Turbines
Water at pressure of 4 kg/cm² and 160°C temperature when exposed to atmosphere will

Cool down
Boil
Flash i.e. get converted into steam
Remain as it was

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

Stop valve
Safety valve
Blow off cock
Fusible plug

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Steam Boilers, Engines, Nozzles and Turbines
The expansion of steam in a nozzle follows

Rankine cycle
Stirling cycle
Joule cycle
Carnot cycle

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Steam Boilers, Engines, Nozzles and Turbines
In a nozzle, the effect of super-saturation is to

Increase the heat drop
Decrease dryness fraction of steam
Increase the entropy
Decrease specific volume of steam

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