Fuels and Combustion Blast furnace coke is made from coal by Low temperature carbonisation High temperature carbonisation Medium temperature carbonisation Heating the coal in an oven in presence of air Low temperature carbonisation High temperature carbonisation Medium temperature carbonisation Heating the coal in an oven in presence of air 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. Carbonisation Hydrogenation Gasification None of these Carbonisation Hydrogenation Gasification None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Number of macrocomponents present in coal according to Stopes are Six Five Four Two Six Five Four Two ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than __________ °C is liable to form clinker. 1250 1400 1350 1100 1250 1400 1350 1100 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The function of secondary combustion air is to Pneumatically convey the pulverised coal Burn the lumpy coal Completely burn the volatile matter None of these Pneumatically convey the pulverised coal Burn the lumpy coal Completely burn the volatile matter None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The main drawback of supplying more excess air in the combustion of fuel is the Excessive power requirement of air blower Enhanced sensible heat loss in the flue gas High exit flue gas temperature from the furnace Intermittant and uncontrolled combustion of the fuel Excessive power requirement of air blower Enhanced sensible heat loss in the flue gas High exit flue gas temperature from the furnace Intermittant and uncontrolled combustion of the fuel ANSWER DOWNLOAD EXAMIANS APP
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