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 calorific value of the fuel Reduction in scale losses Increase in flame temperature Saving in fuel consumption Increase in calorific value of the fuel Reduction in scale losses Increase in flame temperature ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Artificial draught produced by a fan in the furnace can be controlled by the Speed of the fan All of these Damper Variation in the pitch of fan blades Speed of the fan All of these Damper Variation in the pitch of fan blades ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C. 20 60 40 5 20 60 40 5 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the Type of burner and combustion chamber All of these Physical nature, ash content and fineness of the coal Amount of excess air supplied and load on the boiler Type of burner and combustion chamber All of these Physical nature, ash content and fineness of the coal Amount of excess air supplied and load on the boiler ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Maximum thermal efficiency of boiler may be about __________ percent. 65 90 10 25 65 90 10 25 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Forced recirculation of furnace gases is practised To increase heat transfer by convection All of these To ensure uniform temperature In furnaces, operating below 750°C To increase heat transfer by convection All of these To ensure uniform temperature In furnaces, operating below 750°C ANSWER DOWNLOAD EXAMIANS APP
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