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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Stage efficiency is also known as

Gross efficiency
None of these
Diagram efficiency
Nozzle efficiency

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Steam Boilers, Engines, Nozzles and Turbines
A safety valve usually employed with stationary boilers is

Dead weight safety valve
High steam and low water safety valve
All of the listed here
Lever safety valve

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Steam Boilers, Engines, Nozzles and Turbines
In a boiler, the heat is lost

To steam formed by combustion of hydrogen per kg of fuel
To dry flue gases
In moisture present in the fuel
All of these

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Steam Boilers, Engines, Nozzles and Turbines
The effect of super-saturation is that the

Entropy and specific volume of the steam increases
All of these
Exit velocity of steam reduces
Mass of the steam discharged increases

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Steam Boilers, Engines, Nozzles and Turbines
One kg of steam sample contains 0.8 kg dry steam? Its dryness fraction is

0.2
0.8
1
0.6

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Steam Boilers, Engines, Nozzles and Turbines
The fire tubes in a Cochran boiler usually have _________ diameter.

92.5 mm
72.5 mm
62.5 mm
6.25 mm

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