Fuels and Combustion Coals used for the generation of producer gas should have High caking index Low fusion point of ash Very low ash content (8-10%) High volatile matter content High caking index Low fusion point of ash Very low ash content (8-10%) High volatile matter content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be Low High Very high, if the fuel is of low calorific value None of these Low High Very high, if the fuel is of low calorific value None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Removal of hydrogen from coke oven gas Does not alter its calorific value Is not possible on commerical scale Decreases its calorific value Increases its calorific value Does not alter its calorific value Is not possible on commerical scale Decreases its calorific value Increases its calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal having high volatile matter content will None of these Give less yield of tar and gas on carbonisation Have a very high calorific value Burn with a small non-smoky flame None of these Give less yield of tar and gas on carbonisation Have a very high calorific value Burn with a small non-smoky flame ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Shatter index of metallurgical coke on 2 inches and 0.5 inch screen should be respectively around __________ percent. 80 and 97 40 and 70 25 and 97 95 and 100 80 and 97 40 and 70 25 and 97 95 and 100 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal is most disadvantageous during None of these Handling (e.g. when emptying wagons) Combustion of fire slacks on the grates Its pulverisation (as it requires more power) None of these Handling (e.g. when emptying wagons) Combustion of fire slacks on the grates Its pulverisation (as it requires more power) ANSWER DOWNLOAD EXAMIANS APP
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