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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The rate of discharge through the nozzle ___ when the exit pressure is gradually reduced.

None of the listed here
Increases
Remains same
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
In which of the following boilers, the draught in furnace is increased by utilising exhaust steam from engine

Benson boiler
Locomotive boiler
Babcock and Wilcox boiler
Lancashire boiler

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Steam Boilers, Engines, Nozzles and Turbines
The air pressure at the fuel bed is reduced below that of atmosphere by means of a fan placed at or near the bottom of the chimney to produce a draught. Such a draught is called

Forced draught
Induced draught
Balanced draught
Natural draught

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Steam Boilers, Engines, Nozzles and Turbines
Hard coke is used in

Thermal power plant
Blast furnace
Cement industry
Domestic use

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Steam Boilers, Engines, Nozzles and Turbines
Sulphur content of fuels is very important to the plant operators because it

Has high heating value
Promotes complete combustion
Retards electric precipitation
Has highly corrosive effect

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

Increases
Decreases
Behaves unpredictably
Remain same

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