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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Desecration of feed water is carried out because it reduces

Corrosion caused by oxygen
Heat transfer coefficient
pH value of water
Cavitation of boiler feed pumps

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Steam Boilers, Engines, Nozzles and Turbines
The cylinder condensation or missing quantity may be reduced by

Superheating the steam supplied to the engine cylinder
Keeping the expansion ratio small in each cylinder
The efficient steam jacketing of the cylinder walls
All of these

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Steam Boilers, Engines, Nozzles and Turbines
Willian’s line for the steam engine is a straight line relationship between the steam consumption per hour and

Brake power
Indicated power
Pressure of steam
Efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The water tubes in a Babcock and Wilcox boiler are

Horizontal
Inclined
Horizontal and inclined
Vertical

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Steam Boilers, Engines, Nozzles and Turbines
The crown of the fire box is made hemispherical in order to

Give maximum strength
Withstand pressure inside boiler
Give maximum space
Resist intense heat in fire box

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Steam Boilers, Engines, Nozzles and Turbines
Sulphur in coal results in

All of these
Spontaneous combustion during coal storage
Facilitating ash precipitation
Corroding air heaters

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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