Furnace Technology In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by Can not be predicted Convection Radiation Conduction Can not be predicted Convection Radiation Conduction ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turndown ratio of a burner gives an idea of the __________ in the furnace. Range of fuel firing rates Maximum heat input rate only Minimum heat input rate only Volume of the combustion chamber Range of fuel firing rates Maximum heat input rate only Minimum heat input rate only Volume of the combustion chamber ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In a muffle furnace, the muffle Permits the use of controlled atmosphere for the protection of stock All of these Assists in temperature equalisation in the charge Retards the heat transfer Permits the use of controlled atmosphere for the protection of stock All of these Assists in temperature equalisation in the charge Retards the heat transfer ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following is the most important deterrants to an extended use of pulverised coal in boiler firing? Erosion of induced draft fan blades Excessive fly ash discharge from the stack Ash disposal problem Higher power consumption in its transportation Erosion of induced draft fan blades Excessive fly ash discharge from the stack Ash disposal problem Higher power consumption in its transportation ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the Physical nature, ash content and fineness of the coal All of these Amount of excess air supplied and load on the boiler Type of burner and combustion chamber Physical nature, ash content and fineness of the coal All of these Amount of excess air supplied and load on the boiler Type of burner and combustion chamber ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Power required in case of forced draught as compared to induced draught (for the same draught produced) is Same Less More Either more or less; depends on the flue gas density Answer: Option B Same Less More Either more or less; depends on the flue gas density Answer: Option B ANSWER DOWNLOAD EXAMIANS APP
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