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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The fire tubes in a Scotch marine boiler are

Horizontal
Vertical
Inclined
None of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
It is required to produce large amount of steam at low pressure. Which boiler should be used?

Cochran boiler
Pulverized fuel fired boiler
Lancashire boiler
Babcock and Wilcox boiler

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Steam Boilers, Engines, Nozzles and Turbines
The average value of diagram factor lies between

0.2 to 0.5
0.65 to 0.9
0.5 to 0.65
0.8 to 1.2

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Steam Boilers, Engines, Nozzles and Turbines
In a De-Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section (i. e. pressure at throat, p₂) will be

3.3 bar
5.46 bar
9.9 bar
8.2 bar

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the clearance volume to the swept volume is called

None of these
Clearance ratio
Expansion ratio
Cut-off ratio

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Steam Boilers, Engines, Nozzles and Turbines
A turbine is said to have an axial discharge when the steam leaves the blade tip at _________ to the direction of the blade motion.

60°
90°
180°
270°

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