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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The steam temperature with increase in load in case of a boiler fitted with radiation superheater

Increases
Remain unaffected
Decreases
First increases and then decreases

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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
Natural draught
Balanced draught

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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
Natural circulation boiler
Externally fired boiler
Forced circulation boiler

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Steam Boilers, Engines, Nozzles and Turbines
A wet vapor can be completely specified by

Dryness fraction only
Temperature only
Pressure and dryness fraction
Pressure only

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Steam Boilers, Engines, Nozzles and Turbines
An economiser is installed in a boiler primarily to

All of the listed here
Increase steam pressure
Superheat the steam
Reduce fuel consumption

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Steam Boilers, Engines, Nozzles and Turbines
Stage efficiency is also known as

Diagram efficiency
Gross efficiency
None of these
Nozzle efficiency

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