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
Fuels and Combustion __________ process is meant for direct hydrogenation of coal to produce liquid fuel. Lurgi Fischer-Tropsch None of these Bergius Lurgi Fischer-Tropsch None of these Bergius ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Narrow coke ovens as compared to wider coke ovens Produce smaller coke All of these Require less time of carbonisation Produce stronger coke Produce smaller coke All of these Require less time of carbonisation Produce stronger coke ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Weathering of coal during storage causes Decrease in its caking capacity Increase in its friability All of these Reduction in coal size Decrease in its caking capacity Increase in its friability All of these Reduction in coal size ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During combustion of coal on grate, clinker formation is increased by the Low fusion point of ash (< 1100° C) Use of thick fire bed All of these Use of preheated primary air Low fusion point of ash (< 1100° C) Use of thick fire bed All of these Use of preheated primary air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Hard coke is manufactured from Anthracite Bituminous coal Semi-anthracite Lignite Anthracite Bituminous coal Semi-anthracite Lignite ANSWER DOWNLOAD EXAMIANS APP
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