Furnace Technology Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about __________ percent. 65-70 45-50 44119 25-30 65-70 45-50 44119 25-30 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Metallic recuperators are not used for waste heat recovery, if the hot flue gas temperature is above __________ °C, because corrosion prevails at higher temperatures. 1250 350 750 1050 1250 350 750 1050 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? Saving in fuel consumption Increase in flame temperature Reduction in scale losses Increase in calorific value of the fuel Saving in fuel consumption Increase in flame temperature Reduction in scale losses Increase in calorific value of the fuel ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Operation of blast furnace stove is based on the principles of a __________ furnace. Recuperative Regenerative Both A and B Neither A nor B Recuperative Regenerative Both A and B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Decarburisation of steel All of these Affects its crystalline structure Is the removal of carbon from iron carbide (Fe₃C) Is favoured by CO₂ All of these Affects its crystalline structure Is the removal of carbon from iron carbide (Fe₃C) Is favoured by CO₂ ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time? Regenerator Recuperator Waste heat boiler None of these Regenerator Recuperator Waste heat boiler None of these ANSWER DOWNLOAD EXAMIANS APP
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