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Steam Boilers, Engines, Nozzles and Turbines

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

LaMont boiler
Benson boiler
Lancashire boiler
Velox boiler

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Steam Boilers, Engines, Nozzles and Turbines
In a reaction turbine when the degree of reaction is zero, then there is

No heat drop in moving blades
Maximum heat drop in fixed blades
Maximum heat drop in moving blades
No heat drop in fixed blades

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Steam Boilers, Engines, Nozzles and Turbines
The numbers of fire tubes in a Cochran boiler are

225
115
75
165

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Steam Boilers, Engines, Nozzles and Turbines
Sulphur content of fuels is very important to the plant operators because it

Retards electric precipitation
Promotes complete combustion
Has high heating value
Has highly corrosive effect

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Steam Boilers, Engines, Nozzles and Turbines
A device used to heat feed water by utilizing the heat in me exhaust flue gases before leaving through the chimney, is known as

Fusible plug
Economizer
Stop valve
Superheater

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Steam Boilers, Engines, Nozzles and Turbines
Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value

(1- moisture content)
1 + moisture content
1 – moisture content
(1 + moisture content)

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