Fuels and Combustion Too much of excess air in combustion results in high All of these Fuel consumption for the same heat load Percentage of oxygen in flue gases Stack gas temperature All of these Fuel consumption for the same heat load Percentage of oxygen in flue gases Stack gas temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal is pulverised before burning in large capacity boiler furnaces mainly to Provide trouble free operation Facilitate easy ash removal Enhance its calorific value Ensure its complete combustion Provide trouble free operation Facilitate easy ash removal Enhance its calorific value Ensure its complete combustion 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 Same Less More Data insufficient; can't be predicted Same Less More Data insufficient; can't be predicted ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good metallurgical coke Should have high porosity Should be brittle Should have low fusion point of its ash Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have high porosity Should be brittle Should have low fusion point of its ash Must contain moderate quantities of ash, moisture, sulphur and volatile matters ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bomb calorimeter can be used to determine the __________ of the coal. Calorific value Neither A nor B Sulphur content Both A & B Calorific value Neither A nor B Sulphur content Both A & B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following gaseous fuels has the lowest calorific value? Refinery gas Gobar gas Blast furnace gas Converter gas Refinery gas Gobar gas Blast furnace gas Converter gas ANSWER DOWNLOAD EXAMIANS APP
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