Fuels and Combustion Desirable "Micum Index" values of metal-lurical coke are M40 > 98% and M10 < 2% M40 > 4% and M10 < 80% M40 > 78% and M10 < 10% M40 > 10% and M10 < 78% M40 > 98% and M10 < 2% M40 > 4% and M10 < 80% M40 > 78% and M10 < 10% M40 > 10% and M10 < 78% ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Commercial production of petrol from coal (as practised in a factory at Sasol in South Africa) is done by the __________ of coal. None of these Hydrogenation Carbonisation Gasification None of these Hydrogenation Carbonisation Gasification ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A fuel with high heat release rate will Have high calorific value Require smaller combustion chamber Have high adiabatic flame temperature None of these Have high calorific value Require smaller combustion chamber Have high adiabatic flame temperature None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal is most disadvantageous during Combustion of fire slacks on the grates None of these Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) Combustion of fire slacks on the grates None of these Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Compound coke ovens are those which can be heated by Both B and C Both steam and electrical power Rich gas (e.g., coke oven gas) Lean gas (e.g., B.F. gas) Both B and C Both steam and electrical power Rich gas (e.g., coke oven gas) Lean gas (e.g., B.F. gas) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During combustion of coal on grate, clinker formation is increased by the Use of thick fire bed Low fusion point of ash (< 1100° C) Use of preheated primary air All of these Use of thick fire bed Low fusion point of ash (< 1100° C) Use of preheated primary air All of these ANSWER DOWNLOAD EXAMIANS APP
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