Fuels and Combustion Increase in ash content of blast furnace coke Decreases its hardness and abrasion resistance Reduces its consumption in the furnace Does not affect its consumption in the furnace Increases its consumption in the furnace Decreases its hardness and abrasion resistance Reduces its consumption in the furnace Does not affect its consumption in the furnace Increases its consumption in the furnace ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion 'Fat' coal means a coal having High volatile matter Low ash content Low calorific value Non smoking tendency High volatile matter Low ash content Low calorific value Non smoking tendency ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Moisture loss is determined by the Humidity of combustion air The water formed by combustion reaction Both A and B Moisture content of fuel Humidity of combustion air The water formed by combustion reaction Both A and B Moisture content of fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The heat of combustion of a fuel Is always positive Can't be known without calculating it Is always negative Is equal to the heat of formation Is always positive Can't be known without calculating it Is always negative Is equal to the heat of formation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Undercharging of coal in the by-product coke ovens results in No change in the c.v. of coke oven gas Increase in the c.v. of coke oven gas Increase in its throughput Decrease in the c.v. of coke oven gas No change in the c.v. of coke oven gas Increase in the c.v. of coke oven gas Increase in its throughput Decrease in the c.v. of coke oven gas 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? Heat transfer rate to the stock in the furnace Calorific value of the fuel Flame temperature achieved Speed of combustion of fuel Heat transfer rate to the stock in the furnace Calorific value of the fuel Flame temperature achieved Speed of combustion of fuel ANSWER DOWNLOAD EXAMIANS APP
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