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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In reaction turbines, the axial thrust is due to

None of these
Change in axial velocity
Both (A) and (B)
Pressure drop across the rotor

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of cylindrical shell of the Lancashire boiler is of the order of

2 to 4 m
1.75 to 2.75 m
1 to 1.75 m
1 to 1.25 m

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

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

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Steam Boilers, Engines, Nozzles and Turbines
The flow through a nozzle is regarded as

Constant volume flow
Isentropic flow
Isothermal flow
Constant pressure flow

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Steam Boilers, Engines, Nozzles and Turbines
Locomotive boiler is of the following type

All of the listed here
Horizontal
Multi tubular
Internally fired

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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, pā‚‚) will be

3.3 bar
8.2 bar
5.46 bar
9.9 bar

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