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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine is known as

Economiser
Steam condenser
Steam boiler
Steam preheater

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

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

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following boilers is best suited to meet fluctuating demands?

Locomotive
Babcock and Wilcox
Cochran
Lancashire

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Steam Boilers, Engines, Nozzles and Turbines
Presence of moisture in fuel oil would

Aid in proper combustion
Keep the burner tips cool
Clean the nozzles
Because sputtering, possibly extinguishing flame

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Steam Boilers, Engines, Nozzles and Turbines
The velocity of steam at throat of the nozzle is __________ the velocity of sound.

Equal to
Less than
More than
None of these

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Steam Boilers, Engines, Nozzles and Turbines
In reaction turbines, the axial thrust is due to

Pressure drop across the rotor
None of these
Change in axial velocity
Both (A) and (B)

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