Fuels and Combustion Which of the following fuels is the best for burning on chain grate stoker? Non-caking coal Pulverised coal Coking coal Caking coal Non-caking coal Pulverised coal Coking coal Caking coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal is pulverised before burning in large capacity boiler furnaces mainly to Enhance its calorific value Provide trouble free operation Ensure its complete combustion Facilitate easy ash removal Enhance its calorific value Provide trouble free operation Ensure its complete combustion Facilitate easy ash removal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Froth floatation is used for Washing fine coal dust (< 0.5 mm size) All of these Removing ash from the coal based on difference in specific gravity of coal and ash Washing lump coal (> 80 mm size) Washing fine coal dust (< 0.5 mm size) All of these Removing ash from the coal based on difference in specific gravity of coal and ash Washing lump coal (> 80 mm size) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about____°C. 145 105 70 85 145 105 70 85 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Producer gas comprises mainly of CO₂ & H₂ CO₂ & N₂ CO & H₂ CO & N₂ CO₂ & H₂ CO₂ & N₂ CO & H₂ CO & N₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke compared to the coal from which it has been made, contains Greater percentage of ash Less volatile matter More carbon All of these Greater percentage of ash Less volatile matter More carbon All of these ANSWER DOWNLOAD EXAMIANS APP
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