Fuels and Combustion Preheating of combustion air is done to Reduce its requirement for effecting the complete combustion Increase the calorific value of the fuel Complete the combustion of fuel Increase the adiabatic flame temperature Reduce its requirement for effecting the complete combustion Increase the calorific value of the fuel Complete the combustion of fuel Increase the adiabatic flame temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because 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 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 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The sequence of absorption in flue gas analysis by Orsat's apparatus is respectively CO₂, CO, O₂ O₂, CO₂, CO CO₂, O₂, CO CO, O₂, CO₂ CO₂, CO, O₂ O₂, CO₂, CO CO₂, O₂, CO CO, O₂, CO₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion __________ prohibits the use of alcohols directly in petrol engines. Low octane number Low flash point High cost & availability Low calorific value Low octane number Low flash point High cost & availability Low calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The maximum adiabatic flame temperature in air is __________ the maximum flame temperature in pure oxygen. Lower than Not related to Higher than Same as Lower than Not related to Higher than Same as ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High temperature in gasification of coal favours Both B and C High production of CO Low production of CO₂ High production of CO₂ Both B and C High production of CO Low production of CO₂ High production of CO₂ ANSWER DOWNLOAD EXAMIANS APP
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