Fuels and Combustion A coal containing very high percentage of durain is called __________ coal. Bright Boghead Splint Non-banded Bright Boghead Splint Non-banded ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The heat of combustion of a fuel Is equal to the heat of formation Is always negative Can't be known without calculating it Is always positive Is equal to the heat of formation Is always negative Can't be known without calculating it Is always positive ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the High sulphur content in the fuel Lack of thorough mixing of fuel with air Presence of large quantity of hydrogen in the fuel Low calorific value of the fuel High sulphur content in the fuel Lack of thorough mixing of fuel with air Presence of large quantity of hydrogen in the fuel Low calorific value of the fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of combustion air is done to Increase the adiabatic flame temperature Increase the calorific value of the fuel Complete the combustion of fuel Reduce its requirement for effecting the complete combustion Increase the adiabatic flame temperature Increase the calorific value of the fuel Complete the combustion of fuel Reduce its requirement for effecting the complete combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in Fine sizes without the presence of any lump Large heaps with small surface to volume ratio Shallow and small piles Closed space without any ventilation facility Fine sizes without the presence of any lump Large heaps with small surface to volume ratio Shallow and small piles Closed space without any ventilation facility ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³ ), while the C.V. is same on weight basis (i.e., kcal/kg) ? F. gas and coke oven gas Propane and acetylene Propane and LPG Sewage gas and gobar gas F. gas and coke oven gas Propane and acetylene Propane and LPG Sewage gas and gobar gas ANSWER DOWNLOAD EXAMIANS APP
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