Furnace Technology Circulation of gases in furnace is caused by the Change in volume during a change of temperature Furnace pressure in conjunction with draft in flues Difference in density between hot and cold gases All of these Change in volume during a change of temperature Furnace pressure in conjunction with draft in flues Difference in density between hot and cold gases All of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Maximum heat transfer in high temperature furnaces is by Convection Either A, B or C; depends on the type of furnace Radiation Conduction Convection Either A, B or C; depends on the type of furnace Radiation Conduction ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In practical operation of any furnace, zero oxygen percentage or theoretical CO₂ percentage in flue gas is rarely achieved, because of Use of excessive positive draft in the furnace Use of non-preheated combustion air Use of pulverised solid fuels Imperfect mixing of fuel & air and infiltration of air Use of excessive positive draft in the furnace Use of non-preheated combustion air Use of pulverised solid fuels Imperfect mixing of fuel & air and infiltration of air ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following is the most suitable for preheating combustion air above 650°C ? None of these Metallic recuperator Regenerator Ceramic recuperator None of these Metallic recuperator Regenerator Ceramic recuperator ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following accentuates clinker-ing troubles on furnace grate burning coal? All of these Thick firebed and preheated primary air Low forced draft & fuel bed temperature Low reactivity of carbonised residue containing high proportion of iron & sulphur All of these Thick firebed and preheated primary air Low forced draft & fuel bed temperature Low reactivity of carbonised residue containing high proportion of iron & sulphur ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In low or standard frequency induction furnace, heat is produced by the Combination of induced current and skin effect Current flow through a heating element None of these Induction and resistance Combination of induced current and skin effect Current flow through a heating element None of these Induction and resistance ANSWER DOWNLOAD EXAMIANS APP
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