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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Which of the following boiler is best suited to meet the fluctuating demand of steam?

Babcock and Wilcox boiler
Locomotive boiler
Lancashire boiler
Cornish boiler

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Steam Boilers, Engines, Nozzles and Turbines
The heat loss in a boiler takes place in the form of

Heat carried away by flue gases
Moisture present in fuel and steam formed by combustion of hydrogen in fuel
Heat carried away by ash
All of these

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Steam Boilers, Engines, Nozzles and Turbines
When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as

Internally fired boiler
Forced circulation boiler
Externally fired boiler
Natural circulation boiler

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Steam Boilers, Engines, Nozzles and Turbines
The pressure velocity compounded impulse turbine allows a bigger pressure drop and hence __________ numbers of stages are required.

More
None of the listed here
Equal
Less

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Steam Boilers, Engines, Nozzles and Turbines
The missing quantity per stroke is equal to

Cylinder feed indicated mass of steam
Mass of cushion steam + indicated mass of steam
Mass of cushion steam + cylinder feed
Cylinder feed + indicated mass of steam

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

Incomplete combustion
Unburnt carbon in ash
Ash content
Flue gases

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