Fuels and Combustion C.V. (kcal/Nm³) of gaseous fuels __________ with increase in molecular weight. Remains constant Increases May increase or decrease, depends on combustibles Decreases Remains constant Increases May increase or decrease, depends on combustibles Decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coking coals are invariably Bituminous coals Semi-anthracites Lignites Anthracites Bituminous coals Semi-anthracites Lignites Anthracites ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal is most disadvantageous during Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) Combustion of fire slacks on the grates None of these Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) Combustion of fire slacks on the grates None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gobar gas is produced by the __________ of 'gobar' (cow dung). Dehydration Oxidation Fermentation Hydrolysis Dehydration Oxidation Fermentation Hydrolysis ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Assam coals suffers mainly from the disadvantage of high __________ content. Volatile matter Sulphur (4-6%) Ash Moisture Volatile matter Sulphur (4-6%) Ash Moisture ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good metallurgical coke Should have low fusion point of its ash Should have high porosity Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should be brittle Should have low fusion point of its ash Should have high porosity Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should be brittle ANSWER DOWNLOAD EXAMIANS APP
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