Fuels and Combustion Sulphur in metallurgical coal 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 Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Out of the following fuels, the difference between the net and gross calorific value is maximum in case of Bituminous coal Fuel oil Blast furnace gas Pitch Bituminous coal Fuel oil Blast furnace gas Pitch 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 Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls Reduces the coking time None of these 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 Reduces the coking time None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest flame velocity? CH₄ H₂ CO C₂H₆ CH₄ H₂ CO C₂H₆ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be Data insufficient; can't be predicted Same Less More Data insufficient; can't be predicted Same Less More ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The fuel ratio of a coal is Both A and B The ratio of its percentage of fixed carbon to that of volatile matter Helpful in estimation of its rank Neither A nor B Both A and B The ratio of its percentage of fixed carbon to that of volatile matter Helpful in estimation of its rank Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
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