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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The ratio of the volume at cut-off to the swept volume is called

Clearance ratio
Expansion ratio
None of these
Cut-off ratio

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following boiler works on a forced circulation of water?

Lamont boiler
All of these
Loeffler boiler
Benson boiler

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Steam Boilers, Engines, Nozzles and Turbines
In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is _________ the condenser pressure.

None of these
Higher than
Lower than
Equal to

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Steam Boilers, Engines, Nozzles and Turbines
Desecration of feed water is carried out because it reduces

pH value of water
Corrosion caused by oxygen
Heat transfer coefficient
Cavitation of boiler feed pumps

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Steam Boilers, Engines, Nozzles and Turbines
The high steam and low water safety valve is used to blow off steam when the

Both (A) and (B)
None of these
Water level in the boiler becomes too low
Steam pressure exceeds the working pressure

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Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are

None of these
Externally fired
Internally fired
Internally as well as externally fired

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