Fuels and Combustion Low temperature oxidation of coal is accelerated by the All of these Storage in large heaps Storage in compressed piles Absence of porous or friable particles All of these Storage in large heaps Storage in compressed piles Absence of porous or friable particles ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal during its high temperature carbonisation Reduces the coking time None of these Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls Increases the loss of fine coal dust from the ovens when charging Reduces the coking time None of these Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls Increases the loss of fine coal dust from the ovens when charging ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Incomplete combustion of a fuel is characterised by the high __________ in the flue gas. Temperature Smoke Oxygen Carbon monoxide Temperature Smoke Oxygen Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Naphthalene recovered from coke oven gas is used As moisture proof coating on fibres As moth balls (insecticides) For making electrodes As a fuel in furnaces As moisture proof coating on fibres As moth balls (insecticides) For making electrodes As a fuel in furnaces ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following would require maximum amount of % excess air for complete combustion? Lump coal (fixed on chain grate) Furnace oil Pulverised coal Coke oven gas Lump coal (fixed on chain grate) Furnace oil Pulverised coal Coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The main function of primary air in pulverised coal fired burner is to Preheat the tertiary air used for complete combustion of CO to CO₂ Have proper combustion by supplying it around the burner Dry and transport the coal Burn CO to CO₂ Preheat the tertiary air used for complete combustion of CO to CO₂ Have proper combustion by supplying it around the burner Dry and transport the coal Burn CO to CO₂ ANSWER DOWNLOAD EXAMIANS APP
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