Fuels and Combustion A gaseous fuel in order to develop luminousity on burning, must contain Hydrogen Hydrocarbons Carbon monoxide Oxygen Hydrogen Hydrocarbons Carbon monoxide Oxygen ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Turndown ratio of a gas burner is equal to the Maximum to minimum heat input ratio Maximum to minimum permissible gas flow rate Both A & B Minimum to maximum heat input ratio Maximum to minimum heat input ratio Maximum to minimum permissible gas flow rate Both A & B Minimum to maximum heat input ratio ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the Ratio of fixed carbon to volatile matter increases High rank coals have higher amount of volatile matter Calorific value of the coal increases Oxygen content progressively decreases Ratio of fixed carbon to volatile matter increases High rank coals have higher amount of volatile matter Calorific value of the coal increases Oxygen content progressively decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal with high ash content Has higher calorific value Is harder and stronger Is not subjected to washing Has low quantity of mineral matter Has higher calorific value Is harder and stronger Is not subjected to washing Has low quantity of mineral matter ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Flue gas discharge velocity through chimney of a big thermal power plant may be around __________ m/sec. 0.5 50 500 10 0.5 50 500 10 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in Closed space without any ventilation facility Large heaps with small surface to volume ratio Shallow and small piles Fine sizes without the presence of any lump Closed space without any ventilation facility Large heaps with small surface to volume ratio Shallow and small piles Fine sizes without the presence of any lump ANSWER DOWNLOAD EXAMIANS APP
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