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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The diameter of Cornish boiler is of the order of

12 m
1.52.5 m
23 m
2.53.5 m

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Steam Boilers, Engines, Nozzles and Turbines
Which type of boiler can meet rapid changes of load?

Horizontal water tube type
Vertical fire tube type
Forced circulation type
Horizontal fire tube type

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of internal flue tubes in a Lancashire boiler compared to its shell is

Two-fifth
One-half
One-third
Two-fourth

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Steam Boilers, Engines, Nozzles and Turbines
In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is _________ the condenser pressure.

None of these
Higher than
Equal to
Lower than

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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

Balanced draught
Natural draught
Forced draught
Induced draught

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Steam Boilers, Engines, Nozzles and Turbines
The variation of steam pressure in the nozzle depends upon

Velocity of steam
Specific volume of steam
Dryness fraction of steam
All of these

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