Fuels and Combustion If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be Low Very high, if the fuel is of low calorific value High None of these Low Very high, if the fuel is of low calorific value High None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gross and net calorific value of a fuel will be the same If its hydrogen/hydrogen compound content is zero If its ash content is zero Ifits carbon content is very low Under no circumstances If its hydrogen/hydrogen compound content is zero If its ash content is zero Ifits carbon content is very low Under no circumstances ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Initial pressure of oxygen introduced into the 'bomb' of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around __________ atm. 25-30 95-100 60-65 3-5 25-30 95-100 60-65 3-5 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the Oxygen content progressively decreases High rank coals have higher amount of volatile matter Calorific value of the coal increases Ratio of fixed carbon to volatile matter increases Oxygen content progressively decreases High rank coals have higher amount of volatile matter Calorific value of the coal increases Ratio of fixed carbon to volatile matter increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of pitch creosote mixture (PCM) i.e., C.T.F.-200 is about Same as that of coal middling 25000 kcal/kg 8800 kcal/kg 8800 kcal/m³ Same as that of coal middling 25000 kcal/kg 8800 kcal/kg 8800 kcal/m³ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The maximum adiabatic flame temperature in air as compared to that in pure oxygen is Much lower Either lower or higher, depends on the type of fuel Same Much higher Much lower Either lower or higher, depends on the type of fuel Same Much higher ANSWER DOWNLOAD EXAMIANS APP
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