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Steam Boilers, Engines, Nozzles and Turbines

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

Loeffler boiler
Benson boiler
Lamont boiler
All of these

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Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are limited to a maximum working pressure of

17 MN/m²
170 MN/m²
1.7 MN/m²
0.17 MN/m²

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

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

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Steam Boilers, Engines, Nozzles and Turbines
In a nozzle, the effect of super-saturation is to

Decrease specific volume of steam
Increase the entropy
Decrease dryness fraction of steam
Increase the heat drop

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Steam Boilers, Engines, Nozzles and Turbines
The mechanical draught _________ with the amount of smoke.

Increases
Decreases
None of these
Does not effect

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Steam Boilers, Engines, Nozzles and Turbines
The missing quantity per stroke is equal to

Cylinder feed + indicated mass of steam
Mass of cushion steam + cylinder feed
Mass of cushion steam + indicated mass of steam
Cylinder feed indicated mass of steam

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