Fuels and Combustion Which of the following has the highest flame velocity? C₂H₆ CO CH₄ H₂ C₂H₆ CO CH₄ H₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal having high volatile matter content will Give less yield of tar and gas on carbonisation Have a very high calorific value Burn with a small non-smoky flame None of these Give less yield of tar and gas on carbonisation Have a very high calorific value Burn with a small non-smoky flame None of these ANSWER DOWNLOAD EXAMIANS APP
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 Risk of explosion Requirement of large volume combustion chamber Chances of clinker formation Incomplete combustion of coal Risk of explosion Requirement of large volume combustion chamber Chances of clinker formation Incomplete combustion of coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Caking index of a coal is a measure of its Reactivity Porosity Agglutinating (binding) properties Abradability Reactivity Porosity Agglutinating (binding) properties Abradability ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increases in carbonisation temperature Tar yield increases Coke even gas yield increases Hydrogen percentage in the coke oven gas decreases Methane percentage in the coke oven gas increases Tar yield increases Coke even gas yield increases Hydrogen percentage in the coke oven gas decreases Methane percentage in the coke oven gas increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of coke even gas produced by low temperature carbonisation of coal is about __________ Kcal/Nm³. 10000 6500 4000 2500 10000 6500 4000 2500 ANSWER DOWNLOAD EXAMIANS APP
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