Fuels and Combustion The function of secondary combustion air is to Burn the lumpy coal Completely burn the volatile matter Pneumatically convey the pulverised coal None of these Burn the lumpy coal Completely burn the volatile matter Pneumatically convey the pulverised coal None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is a measure of the agglutinating (i.e., binding) property of coal? Swelling index Caking index Gray-king index Thickness of plastic layer Swelling index Caking index Gray-king index Thickness of plastic layer ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Natural draught produced by a chimney depends upon the Neither A nor B Both A & B Height of the chimney Density of the chimney gases Neither A nor B Both A & B Height of the chimney Density of the chimney gases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around __________ cm/hr. 2.5 10 20 0.5 2.5 10 20 0.5 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke oven gas is a better fuel than blast furnace gas, because of its higher Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity) Adiabatic flame temperature Heat release rate (thus requiring smaller combustion chamber) All of these Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity) Adiabatic flame temperature Heat release rate (thus requiring smaller combustion chamber) All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following would require least amount of secondary air for combustion? Anthracite containing 10% volatile matter and 8% ash Coke breeze containing 25% ash and 2% volatile matter Bituminous coal containing 20% ash and 25% volatile matter Semi-bituminous coal containing 25% ash and 20% volatile matter Anthracite containing 10% volatile matter and 8% ash Coke breeze containing 25% ash and 2% volatile matter Bituminous coal containing 20% ash and 25% volatile matter Semi-bituminous coal containing 25% ash and 20% volatile matter ANSWER DOWNLOAD EXAMIANS APP
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