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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
During polytropic process

Steam may be wet, dry or superheated after expansion
Heat transfer takes place across cylinder walls
Work is done
All of these

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Steam Boilers, Engines, Nozzles and Turbines
By compounding the expansion of steam in two or more cylinders, the ratio of expansion

None of these
Does not change
Increases
Decreases

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

Diagram efficiency
None of these
Nozzle efficiency
Stage efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The steam leaves the nozzle at a

Low pressure and a high velocity
High pressure and a low velocity
High pressure and a high velocity
Low pressure and a low velocity

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Steam Boilers, Engines, Nozzles and Turbines
An impulse turbine as compared to a reaction turbine, for a given power has _________ row of blades.

Less
None of these
More
Equal

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of a pressure-velocity compounded impulse turbine is __________ as compared to pressure compounded impulse turbine.

Same
Less
More
None of these

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