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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Curtis turbine is a

Velocity compounded turbine
Pressure compounded turbine
Simple reaction turbine
Pressure-velocity compounded turbine

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity ‘V’ at inlet)

Vb = V cos α
Vb = 0.5 V cosα
Vb = 0.5 V² cosα
Vb = V² cos α

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Steam Boilers, Engines, Nozzles and Turbines
Cut-off ratio is the ratio of

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

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Steam Boilers, Engines, Nozzles and Turbines
A closed vessel made of steel and used for the generation of steam is called a

Steam injector
Steam boiler
Steam condenser
Steam turbine

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Steam Boilers, Engines, Nozzles and Turbines
The basic purpose of drum in boiler is to

Serve as storage of feed water for water wall
Serve as storage of steam
Separate steam from water
Remove salts from water

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Steam Boilers, Engines, Nozzles and Turbines
The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.

None of these
Same
More
Less

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