Fuels and Combustion Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the Chances of clinker formation Incomplete combustion of coal Requirement of large volume combustion chamber Risk of explosion Chances of clinker formation Incomplete combustion of coal Requirement of large volume combustion chamber Risk of explosion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not a binder for coal briquetting? Coal tar Molasses None of these Bitumen Coal tar Molasses None of these Bitumen ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Higher percentage of ash in coal meant for the production of metallurgical grade coke Decreases the abrasion resistance of coke None of these Decreases the hardness of coke Causes brittleness in steel Decreases the abrasion resistance of coke None of these Decreases the hardness of coke Causes brittleness in steel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the least calorific value (kcal/Nm³) ? Natural gas Blast furnace gas Sewage gas Coke oven gas Natural gas Blast furnace gas Sewage gas Coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of a gaseous fuel results in increased Quantity of flue gas Flame temperature Ignition temperature Flame length Quantity of flue gas Flame temperature Ignition temperature Flame length ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion 'Fuel' can be defined as a substance which produces heat by Combustion Nuclear fusion All of these Nuclear fission Combustion Nuclear fusion All of these Nuclear fission ANSWER DOWNLOAD EXAMIANS APP
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