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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The amount of water evaporated from feed water at _________ into dry and saturated steam at 100° C at normal atmospheric pressure is called equivalent evaporation from and at 100° C.

60°C
100°C
0°C
40°C

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Steam Boilers, Engines, Nozzles and Turbines
Steam turbines may be classified according to

Number of stages
Direction of steam flow
All of these
Mode of steam action

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Steam Boilers, Engines, Nozzles and Turbines
While steam expands in turbines, theoretically the entropy

Remains constant
Behaves unpredictably
Increases
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
The pressure of reheat steam after passing through reheater compared to inlet condition is

Equal
Less
More
May be more or less depending on capacity of reheater

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Steam Boilers, Engines, Nozzles and Turbines
The fire tubes in a Scotch marine boiler are

Inclined
Horizontal
Vertical
None of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
The shell diameter and length of locomotive boiler are

1.5 m, 4 m
2 m, 4 m
1 m, 4 m
1.5 m, 6 m

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