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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
O₂ content in atmospheric air on volume basis is

0.21
0.23
0.3
0.4

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

Pressure and dryness fraction
Temperature only
Pressure only
Dryness fraction only

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Steam Boilers, Engines, Nozzles and Turbines
The variation of steam pressure in the nozzle depends upon

Velocity of steam
Dryness fraction of steam
Specific volume of steam
All of these

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Steam Boilers, Engines, Nozzles and Turbines
There is always some steam left in the clearance space from the previous stroke. This steam left in the clearance space is called

Wet steam
Saturated steam
Superheated steam
Cushion steam

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Steam Boilers, Engines, Nozzles and Turbines
The process of draining steam from the turbine, at certain points during its expansion and using this steam for heating the feed water in feed water heaters and then supplying it to the boiler is known as

None of these
Bleeding
Regenerative heating
Reheating of steam

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

Vertical
None of the listed here
Inclined
Horizontal

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