Fuels and Combustion The calorific value of natural gas is about __________ kcal/Nm³. 35, 000 25, 000 2500 10, 000 35, 000 25, 000 2500 10, 000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300° ) may be reduced by about __________ percent as compared to the use of atmospheric combustion air. 20 5 35 10 20 5 35 10 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around __________ cm/hr. 2.5 0.5 20 10 2.5 0.5 20 10 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following accentuates clinker-ing trouble on furnace grate burning coal? Thick fire bed and preheated primary air All of these Low reactivity of carbonised residue containing high proportions of iron & sulphur Low forced draught and fuel bed temperature Thick fire bed and preheated primary air All of these Low reactivity of carbonised residue containing high proportions of iron & sulphur Low forced draught and fuel bed temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called Back draughting Banking None of these Under pressurising Back draughting Banking None of these Under pressurising ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Artificial draught produced by a fan can be controlled by the Speed of the fan Damper Variation in the pitch of the fan blades All of these Speed of the fan Damper Variation in the pitch of the fan blades All of these ANSWER DOWNLOAD EXAMIANS APP
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