Fuels and Combustion Which of the following gaseous fuels has the lowest calorific value? Refinery gas Blast furnace gas Converter gas Gobar gas Refinery gas Blast furnace gas Converter gas Gobar gas 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. Increases Decreases May increase or decrease depending on the type of fuel Remains same Increases Decreases May increase or decrease depending on the type of fuel Remains same ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following would require least amount of secondary air for combustion? Semi-bituminous coal containing 25% ash and 20% volatile matter Bituminous coal containing 20% ash and 25% volatile matter Coke breeze containing 25% ash and 2% volatile matter Anthracite containing 10% volatile matter and 8% ash Semi-bituminous coal containing 25% ash and 20% volatile matter Bituminous coal containing 20% ash and 25% volatile matter Coke breeze containing 25% ash and 2% volatile matter Anthracite containing 10% volatile matter and 8% ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The function of secondary combustion air is to Completely burn the volatile matter Burn the lumpy coal None of these Pneumatically convey the pulverised coal Completely burn the volatile matter Burn the lumpy coal None of these Pneumatically convey the pulverised coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion KOH solution used in orsat apparatus absorbs Neither A nor B Both A & B CO₂ SO₂ Neither A nor B Both A & B CO₂ SO₂ ANSWER DOWNLOAD EXAMIANS APP
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