Fuels and Combustion C.V. (kcal/Nm³) of gaseous fuels __________ with increase in molecular weight. Decreases Increases Remains constant May increase or decrease, depends on combustibles Decreases Increases Remains constant May increase or decrease, depends on combustibles ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gray King Assay and Swelling Index of a coal is a measure of its Swelling characteristics Agglutinating properties Resistance to impact breakage Abradability Swelling characteristics Agglutinating properties Resistance to impact breakage Abradability ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of combustion air is done to Complete the combustion of fuel Reduce its requirement for effecting the complete combustion Increase the calorific value of the fuel Increase the adiabatic flame temperature Complete the combustion of fuel Reduce its requirement for effecting the complete combustion Increase the calorific value of the fuel Increase the adiabatic flame temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Of the total tar present in raw coke oven gas, the tar recovered in primary cooler is about __________ percent. 55 25 75 5 55 25 75 5 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 Excessive fly-ash discharge from the stack Ash disposal problem High power consumption in its transportation Erosion of induced draft fan blades Excessive fly-ash discharge from the stack Ash disposal problem High power consumption in its transportation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Cannel coal Is non-coking Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named All of these Has a high volatile matter content and burns with a luminous smoky flame Is non-coking Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named All of these Has a high volatile matter content and burns with a luminous smoky flame ANSWER DOWNLOAD EXAMIANS APP
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