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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is

0.053 bar
0.067 bar
0.007 bar
0.06 bar

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Steam Boilers, Engines, Nozzles and Turbines
The maximum heat loss is a boiler occurs due to

Steam formation
Unburnt carbon
Moisture in fuel
Dry flue gases

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Steam Boilers, Engines, Nozzles and Turbines
The high steam and low water safety valve is not used in

Locomotive boiler
Cochran boiler
Cornish boiler
Lancashire boiler

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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

5.46 bar
8.2 bar
9.9 bar
3.3 bar

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Steam Boilers, Engines, Nozzles and Turbines
An economiser _________ the steam raising capacity of a boiler.

Increases
Decreases
Has no effect on
None of these

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Steam Boilers, Engines, Nozzles and Turbines
Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where I.P. = Indicated power)

1/(I.P)
(I.P.)²
I.P.
1/(I.P)²

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