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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,

Pressure remains constant
Velocity decreases
Velocity remains constant
Velocity increases

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following is a fire tube boiler?

Yarrow boiler
Babcock and Wilcox boiler
None of these
Lancashire boiler

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Steam Boilers, Engines, Nozzles and Turbines
The shell diameter of a Locomotive boiler is

2.5 m
1 m
2 m
1.5 m

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Steam Boilers, Engines, Nozzles and Turbines
Maximum energy loss in a boiler occurs due to

Incomplete combustion
Flue gases
Ash content
Unburnt carbon in ash

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Steam Boilers, Engines, Nozzles and Turbines
A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as

Stop valve
Superheater
Blow off cock
Fusible plug

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

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

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