Fuels and Combustion Actual flame temperature is always lower than the adiabatic flame temperature, because there is Always loss of heat from the flame Both A & B No possibility of obtaining complete combustion at high temperature Neither A nor B Always loss of heat from the flame Both A & B No possibility of obtaining complete combustion at high temperature Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The heat of combustion of a fuel Can't be known without calculating it Is always positive Is always negative Is equal to the heat of formation Can't be known without calculating it Is always positive Is always negative Is equal to the heat of formation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal is most disadvantageous during Its pulverisation (as it requires more power) None of these Combustion of fire slacks on the grates Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) None of these Combustion of fire slacks on the grates Handling (e.g. when emptying wagons) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature carbonisation of coal produces Soft coke No by-products Metallurgical coke Very low calorific value coke oven gas Soft coke No by-products Metallurgical coke Very low calorific value coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has Both A & B Lower hydrogen content Higher calorific value Neither A nor B Both A & B Lower hydrogen content Higher calorific value Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Increase in ash content of blast furnace coke Reduces its consumption in the furnace Does not affect its consumption in the furnace Decreases its hardness and abrasion resistance Increases its consumption in the furnace Reduces its consumption in the furnace Does not affect its consumption in the furnace Decreases its hardness and abrasion resistance Increases its consumption in the furnace ANSWER DOWNLOAD EXAMIANS APP
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