Furnace Technology Which of the following is the most suitable for preheating combustion air above 650°C ? Metallic recuperator None of these Regenerator Ceramic recuperator Metallic recuperator None of these Regenerator Ceramic recuperator ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Protective gas used in the annealing furnace for steel coil comprises of 95% N₂ + 5% H₂ 100% CO 100 %H₂ 5% H₂ + 9% N₂ 95% N₂ + 5% H₂ 100% CO 100 %H₂ 5% H₂ + 9% N₂ ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Higher furnace temperature can not be achieved by use of a lean fuel gas in the furnace by Preheating the combustion air Oxygen enrichment of combustion air Increasing the draft in the furnace Preheating the fuel gas Preheating the combustion air Oxygen enrichment of combustion air Increasing the draft in the furnace Preheating the fuel gas ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In low or standard frequency induction furnace, heat is produced by the Current flow through a heating element Combination of induced current and skin effect Induction and resistance None of these Current flow through a heating element Combination of induced current and skin effect Induction and resistance None of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following variables does not affect the furnace capacity? Ratio of wall surface to surface of stock Size of the furnace Gas velocity in furnace None of these Ratio of wall surface to surface of stock Size of the furnace Gas velocity in furnace None of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Circulation of gases in furnace is caused by the All of these Difference in density between hot and cold gases Change in volume during a change of temperature Furnace pressure in conjunction with draft in flues All of these Difference in density between hot and cold gases Change in volume during a change of temperature Furnace pressure in conjunction with draft in flues ANSWER DOWNLOAD EXAMIANS APP
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