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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
By compounding the expansion of steam in two or more cylinders, the length of stroke

None of these
Increases
Decreases
Does not change

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Steam Boilers, Engines, Nozzles and Turbines
The density of supersaturated steam is about __________ that of the ordinary saturated vapor at the corresponding pressure.

2 times
8 times
Same as
4 times

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Steam Boilers, Engines, Nozzles and Turbines
If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by

Throttling calorimeter
Bucket calorimeter
Combined separating and throttling calorimeter
Separating calorimeter

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Steam Boilers, Engines, Nozzles and Turbines
The pressure of reheat steam after passing through reheater compared to inlet condition is

Less
Equal
May be more or less depending on capacity of reheater
More

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Steam Boilers, Engines, Nozzles and Turbines
Steam turbines are used for

Large marine propulsion
All of these
Direct drive of fans, compressors, pumps
Electric power generation

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Steam Boilers, Engines, Nozzles and Turbines
Gradually increasing temperature of flue gases at inlet to chimney for given steam outputs is an indication of

High calorific value coal being burnt
Higher effectiveness of boiler
Fouling of heat transfer surfaces
Raising of steam temperature

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