Furnace Technology Presence of SO₂ in furnace gases attacks the ferrous metal by way of Accelerating the rate of scaling All of these Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Causing metal embrittlement Accelerating the rate of scaling All of these Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Causing metal embrittlement 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 All of these Rate of firing and emissivity of flame Nature of process ; whether batch, continuous or intermittant Thermal conductivity of the charge & structural materials of furnace All of these Rate of firing and emissivity of flame Nature of process ; whether batch, continuous or intermittant Thermal conductivity of the charge & structural materials of furnace ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turn down ratio of a burner Should be 1:1 for a batch type furnace. Is normally much more for a continuous furnace as compared to a batch furnace Is the ratio of maximum to minimum permissible heat input rates Should be as low as possible i.e., 1 : 2 Should be 1:1 for a batch type furnace. Is normally much more for a continuous furnace as compared to a batch furnace Is the ratio of maximum to minimum permissible heat input rates Should be as low as possible i.e., 1 : 2 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time? Waste heat boiler None of these Regenerator Recuperator Waste heat boiler None of these Regenerator Recuperator ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which is not accomplished in an underfired furnace? 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 Increase in heating capacity/m² of floor space ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Rate of heat release in a furnace, which is the measure of heat intensity is defined as Kcal/hr/m³ combustion space None of these Kcal/hr Kcal/m³ combustion space Kcal/hr/m³ combustion space None of these Kcal/hr Kcal/m³ combustion space ANSWER DOWNLOAD EXAMIANS APP
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