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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.

None of these
Less
More
Equal

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Steam Boilers, Engines, Nozzles and Turbines
At critical point, i.e. p=225.65 kg/cm², the latent enthalpy of vaporisation is

Depends on temperature also
Maximum
Minimum
Zero

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Steam Boilers, Engines, Nozzles and Turbines
The maximum efficiency of a De-Laval turbine is (where α = Nozzle angle)

cot²α
tan²α
cos²α
sin²α

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Steam Boilers, Engines, Nozzles and Turbines
The shell diameter of a Locomotive boiler is

1 m
2.5 m
2 m
1.5 m

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Steam Boilers, Engines, Nozzles and Turbines
The rate of steam produced in Benson boiler is

250 tonnes/h
175 tonnes/h
135 tonnes/h
100 tonnes/h

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Steam Boilers, Engines, Nozzles and Turbines
Alkaline pyrogallate is used in Orsat's apparatus for absorption of

CO
O₂
N₂
CO₂

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