Fuels and Combustion For maximum discharge through a chimney, its height should be Equal to the height of the hot gas column producing draught 200 meters More than 105.7 metres Infinitely long Equal to the height of the hot gas column producing draught 200 meters More than 105.7 metres Infinitely long ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Junker's calorimeter is used to determine the calorific value of Fuel oil Pulverised coal None of these Gaseous fuels Fuel oil Pulverised coal None of these Gaseous fuels ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following fuel gases has the highest calorific value ? Coal bed methane (CBM) Natural gas Sewage gas Liquefied petroleum gas (LPG) Coal bed methane (CBM) Natural gas Sewage gas Liquefied petroleum gas (LPG) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The maximum adiabatic flame temperature is attained, when the fuel is burnt with Less than theoretically required amount of air More than theoretically required amount of air Theoretically required amount of air Theoretically required amount of oxygen Less than theoretically required amount of air More than theoretically required amount of air Theoretically required amount of air Theoretically required amount of oxygen ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Quantity of coke oven gas produced by high temperature carbonisation of one ton of dry coal may be around __________ Nm³. 3000 30 30, 000 300 3000 30 30, 000 300 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Rate of low temperature oxidation of coal due to bad storage conditions Does not vary with increase in surface area Is more for low volatile coal compared to high volatile coal Decreases with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio Does not vary with increase in surface area Is more for low volatile coal compared to high volatile coal Decreases with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio ANSWER DOWNLOAD EXAMIANS APP
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