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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Lancashire boiler is a

Water tube boiler with natural/forced circulation
Mobile fire tube boiler
Stationary water tube boiler
Stationary fire tube boiler

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Steam Boilers, Engines, Nozzles and Turbines
The effect of friction in the nozzle ___ dryness fraction of steam.

None of the listed here
Has no effect on
Increases
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
Benson boiler requires

Three drums
No drum
Two drums
One drum

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Steam Boilers, Engines, Nozzles and Turbines
The latent heat of steam with increase of pressure

Increases
Behaves unpredictably
Decreases
Remain same

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Steam Boilers, Engines, Nozzles and Turbines
Efficiency of Rankine cycle can be increased by

Decreasing exhausts pressure
Increasing the expansion ratio
Increasing exhaust pressure
Decreasing initial steam pressure and temperature

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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

Blow off cock
Stop valve
None of these
Superheater

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