Fuels and Combustion Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ PPm. 1000 5000 10000 50 1000 5000 10000 50 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Use of preheated air for combustion of fuel in the furnace, increases the Flame temperature Calorific value of the fuel Scale losses of the furnace stock None of these Flame temperature Calorific value of the fuel Scale losses of the furnace stock None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion As the C/H ratio of the fuel increases, the amount of CO₂ formed on combustion __________ for the same percentage of excess air. May increase or decrease depending on the type of fuel Decreases Increases Remains same May increase or decrease depending on the type of fuel Decreases Increases Remains same ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ignition temperature decreases progressively from anthracite to lignite, because Moisture content increases Volatile matter content increases Carbon content decreases Ash content increases Moisture content increases Volatile matter content increases Carbon content decreases Ash content increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The function of secondary combustion air is to Pneumatically convey the pulverised coal Completely burn the volatile matter None of these Burn the lumpy coal Pneumatically convey the pulverised coal Completely burn the volatile matter None of these Burn the lumpy coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion About __________ Nm³ of air will be required for the complete combustion of 2Nm³ of CO. 3 2 1 5 3 2 1 5 ANSWER DOWNLOAD EXAMIANS APP
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