Fuels and Combustion In high temperature carbonisation (as compared to low temperature carbonisation) of coal, the Ignition temperature of coke produced is less Gas yield is less Tar yield is more Aromatic content of tar produced is more Ignition temperature of coke produced is less Gas yield is less Tar yield is more Aromatic content of tar produced is more ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass. Electrical resistivity Density Porosity None of these Electrical resistivity Density Porosity None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following gaseous fuels has the highest net calorific value (kcal/Nm³)? Liquified petroleum gas Carburetted water gas Natural gas Producer gas Liquified petroleum gas Carburetted water gas Natural gas Producer gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of of blast furnace gas is around __________ KCal/Nm³. 1800 6500 4200 850 1800 6500 4200 850 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Mineral matter, 'M' and ash percentage 'A' in coal are roughly related as M = 0.5 A M = 1.8 A M = 1.1 A M = A M = 0.5 A M = 1.8 A M = 1.1 A M = A 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? Erosion of induced draft fan blades High power consumption in its transportation Excessive fly-ash discharge from the stack Ash disposal problem Erosion of induced draft fan blades High power consumption in its transportation Excessive fly-ash discharge from the stack Ash disposal problem ANSWER DOWNLOAD EXAMIANS APP
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