Fuels and Combustion Which of the following has the highest calorific value? Sub-bituminous coal Peat Anthracite Lignite Sub-bituminous coal Peat Anthracite Lignite ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal tar (produced by high temperature carbonisation) is the main source of Alphatic compounds Olefins Paraffins Aromatic compounds Alphatic compounds Olefins Paraffins Aromatic compounds ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing? Excessive fly-ash discharge from the stack High power consumption in its transportation Erosion of induced draft fan blades Ash disposal problem Excessive fly-ash discharge from the stack High power consumption in its transportation Erosion of induced draft fan blades Ash disposal problem ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Moisture loss is determined by the Moisture content of fuel Both A and B Humidity of combustion air The water formed by combustion reaction Moisture content of fuel Both A and B Humidity of combustion air The water formed by combustion reaction ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Main constituents of purified Lurgi gas are N₂, H₂ & CO₂ H₂, CmHn & CO₂ CO₂, O₂ & CO CO, H₂ & CH₄ N₂, H₂ & CO₂ H₂, CmHn & CO₂ CO₂, O₂ & CO CO, H₂ & CH₄ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because It reduces its calorific value tremendously It reduces its flame temperature tremendously The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot There are chances of explosion during preheating It reduces its calorific value tremendously It reduces its flame temperature tremendously The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot There are chances of explosion during preheating ANSWER DOWNLOAD EXAMIANS APP
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