Furnace Technology Presence of SO₂ in furnace gases attacks the ferrous metal by way of All of these Causing metal embrittlement Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Accelerating the rate of scaling All of these Causing metal embrittlement Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Accelerating the rate of scaling ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The reason for excessive clinker formation in gas producers is the Use of fuel having too low an ash fusion temperature All of these Development of hot spots in the fuel bed and an abnormally high rate of gasification Use of coal/coke containing a high % of fines and ash Use of fuel having too low an ash fusion temperature All of these Development of hot spots in the fuel bed and an abnormally high rate of gasification Use of coal/coke containing a high % of fines and ash ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In salt bath furnace, heat is transferred to the charge mainly by Conduction Convection None of these Radiation Conduction Convection None of these Radiation ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Ingress of cold air in the furnaces through cracks, charging doors, openings etc. All of these Increases the load on the induced draft fan Reduces the flue gas temperature and makes the furnace atmosphere oxidising Reduces the furnace draught All of these Increases the load on the induced draft fan Reduces the flue gas temperature and makes the furnace atmosphere oxidising Reduces the furnace draught ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Maximum thermal efficiency of boiler may be about __________ percent. 90 25 10 65 90 25 10 65 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following is a heat treatment furnace? Reheating furnace Muffle furnace Annealing furnace Rotary kiln Reheating furnace Muffle furnace Annealing furnace Rotary kiln ANSWER DOWNLOAD EXAMIANS APP
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