Furnace Technology The purpose of controlling the furnace atmosphere is to prevent surface attack by Oxidation/scaling Decarburising Sulphur penetration Either of the above Oxidation/scaling Decarburising Sulphur penetration Either of the above ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace? Increase in flame temperature Saving in fuel consumption Increase in calorific value of the fuel Reduction in scale losses Increase in flame temperature Saving in fuel consumption Increase in calorific value of the fuel Reduction in scale losses ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Hearth furnaces are not used for None of these Reheating Roasting Melting None of these Reheating Roasting Melting ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Protective gas used in the annealing furnace for steel coil comprises of 100 %H₂ 5% H₂ + 9% N₂ 95% N₂ + 5% H₂ 100% CO 100 %H₂ 5% H₂ + 9% N₂ 95% N₂ + 5% H₂ 100% CO ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Fuel used in B.F. stove is Furnace oil Pulverised coal Coke oven gas Blast furnace gas/mixed gas Furnace oil Pulverised coal Coke oven gas Blast furnace gas/mixed gas ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following accentuates clinker-ing troubles on furnace grate burning coal? Thick firebed and preheated primary air All of these Low forced draft & fuel bed temperature Low reactivity of carbonised residue containing high proportion of iron & sulphur Thick firebed and preheated primary air All of these Low forced draft & fuel bed temperature Low reactivity of carbonised residue containing high proportion of iron & sulphur ANSWER DOWNLOAD EXAMIANS APP
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