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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The reheat factor depends upon

Exit pressure
Turbine stage efficiency
All of these
Initial pressure and superheat

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Steam Boilers, Engines, Nozzles and Turbines
Caking coals are those which

Burn freely
Show little or no fusing action
Form lumps or masses of coke
Burn completely

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Steam Boilers, Engines, Nozzles and Turbines
The factor of evaporation for all boilers is always

None of these
Greater than unity
Equal to unity
Less than unity

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Steam Boilers, Engines, Nozzles and Turbines
Cut-off governing of steam engines is a method of controlling the engine output by varying

Volume of intake steam
All of these
Temperature of intake steam
Pressure of intake steam

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Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are those in which

Forced circulation takes place
Tubes are laid vertically
Flue gases pass through tubes and water around it
Water passes through the tubes and flue gases around it

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Steam Boilers, Engines, Nozzles and Turbines
In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,

Velocity increases
Velocity remains constant
Pressure remains constant
Velocity decreases

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