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. 5 20 10 35 5 20 10 35 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal tar (produced by high temperature carbonisation) is the main source of Aromatic compounds Paraffins Olefins Alphatic compounds Aromatic compounds Paraffins Olefins Alphatic compounds ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Artificial draught produced by a fan can be controlled by the Damper All of these Speed of the fan Variation in the pitch of the fan blades Damper All of these Speed of the fan Variation in the pitch of the fan blades ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gross heating value of coal is __________ the net heating value. None of these Higher than Lower than Same as None of these Higher than Lower than Same as ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bulk density of pulverised coal may be about __________ kg/m³. 1000 100 500 1500 1000 100 500 1500 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The fuel ratio of a coal is The ratio of its percentage of fixed carbon to that of volatile matter Helpful in estimation of its rank Neither A nor B Both A and B The ratio of its percentage of fixed carbon to that of volatile matter Helpful in estimation of its rank Neither A nor B Both A and B ANSWER DOWNLOAD EXAMIANS APP
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