Furnace Technology Heat transfer rate to the charge/stock in a furnace does not depend upon the Flue gas temperature Emissivity of refractory walls Type of fuels viz solid, liquid or gaseous Initial temperature of the charged stock Flue gas temperature Emissivity of refractory walls Type of fuels viz solid, liquid or gaseous Initial temperature of the charged stock ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The heating capacity of muffle furnace depends on the Neither A nor B Both A & B Properties of the muffle wall (temperature, area, emissivity) Surface area & emissivity of the stock Neither A nor B Both A & B Properties of the muffle wall (temperature, area, emissivity) Surface area & emissivity of the stock ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which is not accomplished in an underfired furnace? Increase in heating capacity/m² of floor space Portection of the periphery of the charge from excessive radiation Reduction in the temperature of furnace gases Elimination of cold spot at the bottom of the charge Increase in heating capacity/m² of floor space Portection of the periphery of the charge from excessive radiation Reduction in the temperature of furnace gases Elimination of cold spot at the bottom of the charge ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the Rate of firing and emissivity of flame Thermal conductivity of the charge & structural materials of furnace All of these Nature of process ; whether batch, continuous or intermittant Rate of firing and emissivity of flame Thermal conductivity of the charge & structural materials of furnace All of these Nature of process ; whether batch, continuous or intermittant ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology __________ atmosphere is maintained inside an iron blast furnace. Inert Decarburising Oxidising Reducing Inert Decarburising Oxidising Reducing ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Presence of SO₂ in furnace gases attacks the ferrous metal by way of Accelerating the rate of scaling Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Causing metal embrittlement All of these Accelerating the rate of scaling Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Causing metal embrittlement All of these ANSWER DOWNLOAD EXAMIANS APP
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