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 pulverised solid fuels Imperfect mixing of fuel & air and infiltration of air Use of non-preheated combustion air Use of excessive positive draft in the furnace Use of pulverised solid fuels Imperfect mixing of fuel & air and infiltration of air Use of non-preheated combustion air Use of excessive positive draft in the furnace ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Oxygen percentage in the flue gas coming out of a gaseous fuel fired furnace should be ideally about __________ percent. < 10 < 5 < 2 < 8 < 10 < 5 < 2 < 8 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
Furnace Technology While the fuel fired furnace can be used upto a maximum temperature of about 1700°C, the electric furnace can be used upto a temperature of about __________ °C. 6000 4500 3000 2000 6000 4500 3000 2000 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following is not a directly fired furnace? Open hearth furnace By-product coke oven Sintering furnace Calcination kiln Open hearth furnace By-product coke oven Sintering furnace Calcination kiln ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Forced recirculation of furnace gases is practised To ensure uniform temperature To increase heat transfer by convection All of these In furnaces, operating below 750°C To ensure uniform temperature To increase heat transfer by convection All of these In furnaces, operating below 750°C ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS