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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
With increase in load, radiant superheater has

Drooping characteristic
Linear characteristic
Rising characteristic
Flat characteristic

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Steam Boilers, Engines, Nozzles and Turbines
The friction present between the steam and the nozzle surfaces reduces the heat drop by

25 to 40%
15 to 25%
10 to 15%
40 to 60%

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Steam Boilers, Engines, Nozzles and Turbines
Latent heat of dry steam at atmospheric pressure is equal to

427 kcal/ kg
539 BTU/ lb
100 kcal/ kg
539 kcal/ kg

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

None of these
Nozzle efficiency
Gross efficiency
Diagram efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The steam enters the nozzle at a

High pressure and a high velocity
Low pressure and a low velocity
High pressure and a low velocity
Low pressure and a high velocity

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Steam Boilers, Engines, Nozzles and Turbines
The difference of supersaturated temperature and saturation temperature at that pressure is called

Degree of super-saturation
Degree of under-cooling
Degree of superheat
None of the listed here

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