Fuels and Combustion During combustion of gaseous fuels, deficiency of air Lengthens the flame Does not affect the flame length Tends to shorten the flame Increases the flame temperature Lengthens the flame Does not affect the flame length Tends to shorten the flame Increases the flame temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The main drawback of supplying more excess air in the combustion of fuel is the Excessive power requirement of air blower Intermittant and uncontrolled combustion of the fuel High exit flue gas temperature from the furnace Enhanced sensible heat loss in the flue gas Excessive power requirement of air blower Intermittant and uncontrolled combustion of the fuel High exit flue gas temperature from the furnace Enhanced sensible heat loss in the flue gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of of blast furnace gas is around __________ KCal/Nm³. 1800 6500 850 4200 1800 6500 850 4200 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pitch creosote mixture (PCM) as compared to furnace oil is a better fuel, because its Flue gas has lower dew point thereby facilitating more waste heat recovery All of these Sulphur content is lower Emissivity factor is higher Flue gas has lower dew point thereby facilitating more waste heat recovery All of these Sulphur content is lower Emissivity factor is higher ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion KOH solution used in orsat apparatus absorbs CO₂ Neither A nor B Both A & B SO₂ CO₂ Neither A nor B Both A & B SO₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A sample of natural gas containing 80% methane (CH₄) and rest nitrogen (N₂) is burnt with 20% excess air. With 80% of the combustibles producing CO₂ and the reminder going to CO, the Orsat analysis in volume percent is CO₂ : 6.39, CO : 1.60, O₂ : 3.99, H₂O:25.96, N₂:72.06 CO₂ : 7.60, CO : 1.90, O₂ : 4.75, N₂ : 85.74 CO₂ : 6.26, CO : 1.56, O₂ : 3.91, H₂O :15.66, N₂ : 72.60 CO₂ : 7.42, CO : 1.86, O₂ : 4.64, N₂:86.02 CO₂ : 6.39, CO : 1.60, O₂ : 3.99, H₂O:25.96, N₂:72.06 CO₂ : 7.60, CO : 1.90, O₂ : 4.75, N₂ : 85.74 CO₂ : 6.26, CO : 1.56, O₂ : 3.91, H₂O :15.66, N₂ : 72.60 CO₂ : 7.42, CO : 1.86, O₂ : 4.64, N₂:86.02 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS