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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
By compounding the expansion of steam in two or more cylinders, the ratio of expansion

Decreases
Increases
None of these
Does not change

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Steam Boilers, Engines, Nozzles and Turbines
Desecration of feed water is carried out because it reduces

Heat transfer coefficient
Cavitation of boiler feed pumps
pH value of water
Corrosion caused by oxygen

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Steam Boilers, Engines, Nozzles and Turbines
The forced circulation of water does not take place in

Lancashire boiler
Velox boiler
Benson boiler
LaMont boiler

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Steam Boilers, Engines, Nozzles and Turbines
Steam exhaust from high pressure turbine is reheated in

A separate coil located in convection path
Economizer
Superheater tubes
Boiler drums

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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

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

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Steam Boilers, Engines, Nozzles and Turbines
The radius of a dished head is taken approximately as

One fourth
Two
One
Half

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