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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The effect of friction in the nozzle ___ dryness fraction of steam.

Decreases
Has no effect on
None of the listed here
Increases

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Steam Boilers, Engines, Nozzles and Turbines
The missing quantity per stroke is equal to

Cylinder feed + indicated mass of steam
Cylinder feed indicated mass of steam
Mass of cushion steam + cylinder feed
Mass of cushion steam + indicated mass of steam

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Steam Boilers, Engines, Nozzles and Turbines
Willian’s line for the steam engine is a straight line relationship between the steam consumption per hour and

Pressure of steam
Brake power
Indicated power
Efficiency

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Steam Boilers, Engines, Nozzles and Turbines
A stage, in reaction turbine, is represented by

Number of entries of steam
Number of casing
Each row of blades
Number of exits of steam

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio (p₂/p₁) is given by

(p₂/p₁) = [2/(n - 1)] n/(n + 1)
(p₂/p₁) = [(n - 1)/2] n + (1/n)
(p₂/p₁) = [2/(n + 1)] n/(n-1)
(p₂/p₁) = [(n + 1)/2] n - (1/n)

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Steam Boilers, Engines, Nozzles and Turbines
The maximum steam pressure in a Locomotive boiler is limited to

0.18 MN/m²
1.8 MN/m²
18 MN/m²
180 MN/m²

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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