Fuels and Combustion Too much of excess air in combustion results in high Percentage of oxygen in flue gases Stack gas temperature Fuel consumption for the same heat load All of these Percentage of oxygen in flue gases Stack gas temperature Fuel consumption for the same heat load All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke oven gas constitutes mainly of H₂ & CO H₂ & CH₄ CH₄ & CO H₂ & CO₂ H₂ & CO H₂ & CH₄ CH₄ & CO H₂ & CO₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following fuel gases has the highest calorific value ? Natural gas Coal bed methane (CBM) Sewage gas Liquefied petroleum gas (LPG) Natural gas Coal bed methane (CBM) Sewage gas Liquefied petroleum gas (LPG) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal during its high temperature carbonisation None of these Reduces the coking time Increases the loss of fine coal dust from the ovens when charging Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls None of these Reduces the coking time Increases the loss of fine coal dust from the ovens when charging Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not applicable to fluidised bed combustion of coal? None of these It can not burn low grade coal Less heat transfer surface area is required in boilers It achieves higher fuel combustion efficiency None of these It can not burn low grade coal Less heat transfer surface area is required in boilers It achieves higher fuel combustion efficiency ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not endothermic? Partial oxidation Cracking Gasification Reforming Partial oxidation Cracking Gasification Reforming ANSWER DOWNLOAD EXAMIANS APP
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