Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the Calorific value of the coal increases Oxygen content progressively decreases Ratio of fixed carbon to volatile matter increases High rank coals have higher amount of volatile matter Calorific value of the coal increases Oxygen content progressively decreases Ratio of fixed carbon to volatile matter increases High rank coals have higher amount of volatile matter ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Light oil whose major component is benzol, is obtained by the distillation of crude tar in the temperature range of __________ °C. 250-270 200-300 80-170 280-300 250-270 200-300 80-170 280-300 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Caking coal is desirable for Burning on travelling grate All of these Coke making Burning on firebars Burning on travelling grate All of these Coke making Burning on firebars ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During coking of coal, the ash content (percentage) Remains constant Increases None of these Decreases Remains constant Increases None of these Decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Compound coke ovens are those which can be heated by Lean gas (e.g., B.F. gas) Both B and C Rich gas (e.g., coke oven gas) Both steam and electrical power Lean gas (e.g., B.F. gas) Both B and C Rich gas (e.g., coke oven gas) Both steam and electrical power ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In Lurgi coal gasifier, Larger quantity of coal can be processed Low carbon conversion efficiency is achieved Coking coals cannot be used Entrainment of solids is higher Larger quantity of coal can be processed Low carbon conversion efficiency is achieved Coking coals cannot be used Entrainment of solids is higher ANSWER DOWNLOAD EXAMIANS APP
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