Fuels and Combustion Sulphur in metallurgical coal Neither A nor B Contributes to its heating value Affects the quality of steel produced as cracks develop on the surface while rolling the steel Both A and B Neither A nor B Contributes to its heating value Affects the quality of steel produced as cracks develop on the surface while rolling the steel Both A and B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The fuel ratio of a coal is Helpful in estimation of its rank The ratio of its percentage of fixed carbon to that of volatile matter Neither A nor B Both A and B Helpful in estimation of its rank The ratio of its percentage of fixed carbon to that of volatile matter Neither A nor B Both A and B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value as determined by bomb calorimeter is the Lower calorific value at constant pressure Higher calorific value at constant volume Gross calorific value at constant pressure Net calorific value at constant volume Lower calorific value at constant pressure Higher calorific value at constant volume Gross calorific value at constant pressure Net calorific value at constant volume ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion As the C/H ratio of the fuel increases, the amount of CO₂ formed on combustion __________ for the same percentage of excess air. Decreases Increases May increase or decrease depending on the type of fuel Remains same Decreases Increases May increase or decrease depending on the type of fuel Remains same ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal that softens and fuses on heating is Carbonised Caking Classified Non-caking Carbonised Caking Classified Non-caking ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion As time passes, the calorific value of stored coal Remains unaltered May increase or decrease (depends on the method of storage) Increases Decreases Remains unaltered May increase or decrease (depends on the method of storage) Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
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