Fuels and Combustion Desirable "Micum Index" values of metal-lurical coke are M40 > 98% and M10 < 2% M40 > 4% and M10 < 80% M40 > 78% and M10 < 10% M40 > 10% and M10 < 78% M40 > 98% and M10 < 2% M40 > 4% and M10 < 80% M40 > 78% and M10 < 10% M40 > 10% and M10 < 78% ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke oven gas compared to blast furnace gas is Less poisonous Lighter All of these More explosive and inflammable Less poisonous Lighter All of these More explosive and inflammable ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in the temperature of carbonisation of coal All of these Hydrogen content of coke oven gas increases due to cracking of hydrocarbons Methane content in the coke oven gas decreases and carbon monoxide content increases Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content All of these Hydrogen content of coke oven gas increases due to cracking of hydrocarbons Methane content in the coke oven gas decreases and carbon monoxide content increases Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Sulphur in metallurgical coal Neither A nor B Both A and B Contributes to its heating value Affects the quality of steel produced as cracks develop on the surface while rolling the steel Neither A nor B Both A and B Contributes to its heating value Affects the quality of steel produced as cracks develop on the surface while rolling the steel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High sulphur content in a fuel __________ of the flue gases. Decreases the dew point Reduces the combustion efficiency by limiting the permissible temperature reduction Increases the dew point Both B & C Decreases the dew point Reduces the combustion efficiency by limiting the permissible temperature reduction Increases the dew point Both B & C ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not increased by using preheated combustion air in place of ordinary air at room temperature? Flame temperature achieved Calorific value of the fuel Heat transfer rate to the stock in the furnace Speed of combustion of fuel Flame temperature achieved Calorific value of the fuel Heat transfer rate to the stock in the furnace Speed of combustion of fuel ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS