Fuels and Combustion Too much of excess air in combustion results in high Percentage of oxygen in flue gases Fuel consumption for the same heat load All of these Stack gas temperature Percentage of oxygen in flue gases Fuel consumption for the same heat load All of these Stack gas temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to Make it look attractive None of these Avoid radiation heat loss Minimise its corrosion Make it look attractive None of these Avoid radiation heat loss Minimise its corrosion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal gasifier opearating at 20 atm. (e.g. Lugri gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having Lower carbon dioxide content None of these Higher carbon monoxide content Higher methane content and thus higher calorific value Lower carbon dioxide content None of these Higher carbon monoxide content Higher methane content and thus higher calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Higher fuel combustion efficiency can not be achieved by Adopting proper fuel firing technique & fuel preparation Preheating of fuel gases & combustion air Reducing sulphur content in the fuel Supplying correct amount of combustion air Adopting proper fuel firing technique & fuel preparation Preheating of fuel gases & combustion air Reducing sulphur content in the fuel Supplying correct amount of combustion air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gobar gas is produced by the __________ of cown dung. Fermentation Oxidation Hydrogenation None of these Fermentation Oxidation Hydrogenation None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During combustion of coal on grate, clinker formation is increased by the All of these Low fusion point of ash (< 1100° C) Use of thick fire bed Use of preheated primary air All of these Low fusion point of ash (< 1100° C) Use of thick fire bed Use of preheated primary air ANSWER DOWNLOAD EXAMIANS APP
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