Fuels and Combustion Low temperature oxidation of coal during storage does not decrease its Calorific value Caking power None of these Oxygen content Calorific value Caking power None of these Oxygen content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in the time of carbonisation at a particular temperature (say 1000°C), the __________ percentage in coke oven gas increases. Unsaturated hydrocarbons All of these Hydrogen Methane Unsaturated hydrocarbons All of these Hydrogen Methane ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Stack heat losses can be minimised by Maintaining proper draft in the furnace Oxygen enrichment of combustion air Controlling the excess air Using low c.v. fuels Maintaining proper draft in the furnace Oxygen enrichment of combustion air Controlling the excess air Using low c.v. fuels ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest heat of combustion? H₂ CO CH₄ C₂H₆ H₂ CO CH₄ C₂H₆ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which will have the least volatile matter and hence will be the most difficult to ignite? Coke Bituminous coal Semi-bituminous coal Aanthracite Coke Bituminous coal Semi-bituminous coal Aanthracite ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The optimum percentage of excess air for combustion depends upon the __________ of the fuel. Sulphur content Type (solid, liquid or gaseous) Ignition temperature Calorific value Sulphur content Type (solid, liquid or gaseous) Ignition temperature Calorific value ANSWER DOWNLOAD EXAMIANS APP
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