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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The length of Lancashire boiler varies from

7.25 to 9 m
6 to 7 m
5 to 6 m
9 to 10 m

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Steam Boilers, Engines, Nozzles and Turbines
For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is

2 kg
8/3 kg
1 kg
4/3 kg

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Steam Boilers, Engines, Nozzles and Turbines
The maximum discharge through a chimney occurs when the height of chimney is

Equal to the height of the hot gas column producing draught
Infinitely long
Outside temperature is very low
Around 200 meters

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Steam Boilers, Engines, Nozzles and Turbines
When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as

By-pass governing
Cut-off governing
None of these
Throttle governing

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Steam Boilers, Engines, Nozzles and Turbines
The shell of the Cochran boiler is made hemispherical

None of these
To give maximum space and strength
To withstand the pressure of steam inside the boiler
Both (A) and (B)

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Steam Boilers, Engines, Nozzles and Turbines
The steam temperature with increase in load in case of a boiler fitted with radiation superheater

First increases and then decreases
Remain unaffected
Increases
Decreases

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