Fuels and Combustion Removal of hydrogen from coke oven gas Increases its calorific value Is not possible on commerical scale Decreases its calorific value Does not alter its calorific value Increases its calorific value Is not possible on commerical scale Decreases its calorific value Does not alter its calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Degree of carbonisation of coal during coke making can be roughly judged by the __________ of the coke produced. Moisture content Volatile matter Colour Ash content Moisture content Volatile matter Colour Ash content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon Is more difficult to ignite and produces a shorter flame Is less liable to spontaneous combustion on storage Requires smaller combustion space and less secondary air None of these Is more difficult to ignite and produces a shorter flame Is less liable to spontaneous combustion on storage Requires smaller combustion space and less secondary air None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pulverised coal used in boiler firing need not have Lower ash content High bulk density High fusion point of its ash Less moisture content Lower ash content High bulk density High fusion point of its ash Less moisture content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following would require maximum amount of % excess air for complete combustion? Coke oven gas Pulverised coal Furnace oil Lump coal (fixed on chain grate) Coke oven gas Pulverised coal Furnace oil Lump coal (fixed on chain grate) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Supply of excess air for complete combustion of fuel is necessitated to facilitate None of these Attainment of high temperature Attainment of chemical equilibrium Its thorough mixing with air None of these Attainment of high temperature Attainment of chemical equilibrium Its thorough mixing with air ANSWER DOWNLOAD EXAMIANS APP
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