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Furnace Technology

Furnace Technology
The function of an economiser in a boiler is to preheat the

Feedwater
Furnace oil
Combustion air
Pulverised coal

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Furnace Technology
Heat transfer takes place through a liquid medium surrounding the submerged material under heating, in case of a/an

Annealing furnace
Blast furnace
Steam boiler
Salt bath furnace

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Furnace Technology
Combustion of fuel in a furnace with oxygen enriched air results in higher

Flue gas volume
Stack loss
Flame temperature
Fuel consumption

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Furnace Technology
Heat transfer rate to the charge/stock in a furnace does not depend upon the

Initial temperature of the charged stock
Emissivity of refractory walls
Flue gas temperature
Type of fuels viz solid, liquid or gaseous

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Furnace Technology
Which of the following is a periodic furnace?

Rotary kiln
Tunnel kiln
Reheating furnace
Soaking pit

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Furnace Technology
Circulation of gases in furnace is caused by the

Furnace pressure in conjunction with draft in flues
Change in volume during a change of temperature
All of these
Difference in density between hot and cold gases

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