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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The critical pressure gives the velocity of steam at the throat

Less than the velocity of sound
None of these
More than the velocity of sound
Equal to the velocity of sound

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

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

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Steam Boilers, Engines, Nozzles and Turbines
The safety valve at superheater as compared to drum safety valve setting is set at

Any value
Lower value
Higher value
Same value

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Steam Boilers, Engines, Nozzles and Turbines
The process of maintaining the speed of the turbine constant for various load conditions, is known as

Reheating
Bleeding
None of these
Governing

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Steam Boilers, Engines, Nozzles and Turbines
The condition of steam in boiler drum is always

Wet
Saturated
Dry
Supersaturated

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Steam Boilers, Engines, Nozzles and Turbines
The fire tubes in a Locomotive boiler has __________ diameter.

7.45 mm
47.5 mm
5.47 mm
4.75 mm

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