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Steam Boilers, Engines, Nozzles and Turbines

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

None of these
Diagram efficiency
Nozzle efficiency
Stage efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The diameters of fire tubes and superheater tubes in locomotive boiler are

32.5 mm, 180 mm
47.5 mm, 130 mm
24.5 mm, 65 mm
65.5 mm, 210 mm

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Steam Boilers, Engines, Nozzles and Turbines
The impulse reaction turbine has its driving force

As an impulsive force
As a reaction force
None of the listed here
Partly as an impulsive force and partly as a reaction force

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Steam Boilers, Engines, Nozzles and Turbines
Clearance ratio is the ratio of

Clearance volume to the swept volume
Clearance volume to the volume at cut-off
Swept volume to the clearance volume
Volume at cut-off to the swept volume

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Steam Boilers, Engines, Nozzles and Turbines
When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.

None of these
Increases
Decreases
Remain same

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Steam Boilers, Engines, Nozzles and Turbines
A device used to increase the temperature of saturated steam without raising its pressure, is called

Stop valve
Fusible plug
Blow off cock
Superheater

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