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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The draught in locomotive boilers is produced by a

None of these
Steam jet
Chimney
Centrifugal fan

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Steam Boilers, Engines, Nozzles and Turbines
Boiler stays are used to

Provide support for boiler
Prevent flat surfaces under pressure from tearing apart
Take care of failure in shear
Take care of failure in compression

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio for gases is

0.577
0.582
0.528
0.546

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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

Bucket calorimeter
Throttling calorimeter
Combined separating and throttling calorimeter
Separating calorimeter

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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.

Same as
4 times
8 times
2 times

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Steam Boilers, Engines, Nozzles and Turbines
The flow through a nozzle is regarded as

Isentropic flow
Constant volume flow
Isothermal flow
Constant pressure flow

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