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Steam Boilers, Engines, Nozzles and Turbines

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

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

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Steam Boilers, Engines, Nozzles and Turbines
In a nozzle, the effect of super-saturation is to

Decrease specific volume of steam
Increase the heat drop
Decrease dryness fraction of steam
Increase the entropy

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Steam Boilers, Engines, Nozzles and Turbines
At which pressure the properties of water and steam become identical

225.6 kg/cm²
1 kg/cm²
0.1 kg/cm²
100 kg/cm²

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Steam Boilers, Engines, Nozzles and Turbines
A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as

Blow off cock
Stop valve
Superheater
Fusible plug

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Steam Boilers, Engines, Nozzles and Turbines
Maximum energy loss in a boiler occurs due to

Unburnt carbon in ash
Ash content
Incomplete combustion
Flue gases

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Steam Boilers, Engines, Nozzles and Turbines
When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor of evaporation is given by

(h - hf1)/2257
(h + hf1)/2257
(h × hf1)/2257
None of these

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