Chemical Engineering Basics
The main function of the deaerator used in the thermal power plant is to

Remove non-condensable gases from condenser
Throttle down the steam pressure
Remove dissolved gases from feed-water
Enhance feed water temperature

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Chemical Engineering Basics
Salvage value is the most flexible criteria for analysing a financial investment. 'Salvaging' means

Disposing off a machine/property on as is where is basis
Mortgaging the obsolete machine/property
Disposing off machine/property, which is no longer useful in the present scenerio
Writing off the obsolete machine/ property

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