Fuels and Combustion Degree of carbonisation of coal during coke making can be roughly judged by the __________ of the coke produced. Colour Ash content Volatile matter Moisture content Colour Ash content Volatile matter Moisture content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest flame speed? C₂H₆ CH₄ H₂ CO C₂H₆ CH₄ H₂ CO ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gross heating value of coal is __________ the net heating value. None of these Same as Lower than Higher than None of these Same as Lower than Higher than ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following accentuates clinker-ing trouble on furnace grate burning coal? All of these Thick fire bed and preheated primary air Low forced draught and fuel bed temperature Low reactivity of carbonised residue containing high proportions of iron & sulphur All of these Thick fire bed and preheated primary air Low forced draught and fuel bed temperature Low reactivity of carbonised residue containing high proportions of iron & sulphur ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal during its high temperature carbonisation Increases the loss of fine coal dust from the ovens when charging Reduces the coking time Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls None of these Increases the loss of fine coal dust from the ovens when charging Reduces the coking time Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion 'Fat coals' are those coals which have very high Inherent moisture content Fusion point of its ash Volatile matter content Caking capacity Inherent moisture content Fusion point of its ash Volatile matter content Caking capacity ANSWER DOWNLOAD EXAMIANS APP
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