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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
If partial pressure of air and steam be ‘pa’ and ‘ps’ respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to

pa - ps
ps - pa
None of these
pa + ps

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Steam Boilers, Engines, Nozzles and Turbines
The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop

Is unpredictable
Decreases
Increases
Remains the same

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Steam Boilers, Engines, Nozzles and Turbines
The dry saturated steam at very low pressure, (510 kg/cm²) when throttled to atmosphere will become

Remain dry saturated
Wet
Superheated
Dry

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

Decreases
Does not change
None of these
Increases

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Steam Boilers, Engines, Nozzles and Turbines
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has

Equal heating surface
More heating surface
Heating surface depends on other parameters
Less heating surface

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

Temperature only
Pressure and dryness fraction
Pressure only
Dryness fraction only

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