Furnace Technology Use of pulverised coal in boilers provides Better combustion Smokeless burning Higher calorific value Less erosion on furnace wall Better combustion Smokeless burning Higher calorific value Less erosion on furnace wall ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace? Reduction in scale losses Saving in fuel consumption Increase in flame temperature Increase in calorific value of the fuel Reduction in scale losses Saving in fuel consumption Increase in flame temperature Increase in calorific value of the fuel ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following is a periodic furnace? Soaking pit Reheating furnace Tunnel kiln Rotary kiln Soaking pit Reheating furnace Tunnel kiln Rotary kiln ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Heat transfer rate to the stock/charge in the furnace does not depend upon the Size of the furance Thickness of the stock Emissivity of the refactory walls Use of waste heat recovery equipments Size of the furance Thickness of the stock Emissivity of the refactory walls Use of waste heat recovery equipments ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by Convection Can not be predicted Radiation Conduction Convection Can not be predicted Radiation Conduction ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The amount of combustible escaping uncon-sumed from the furnace, depends upon the Air supplied and furnace temperature Air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by change of direction) All of these Burner design (thoroughness of mixing versus stratification) Air supplied and furnace temperature Air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by change of direction) All of these Burner design (thoroughness of mixing versus stratification) ANSWER DOWNLOAD EXAMIANS APP
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