Furnace Technology Thermal efficiency of an open hearth furnace may be about __________ percent. 5 50 20 80 5 50 20 80 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following is the most important deterrants to an extended use of pulverised coal in boiler firing? Higher power consumption in its transportation Ash disposal problem Erosion of induced draft fan blades Excessive fly ash discharge from the stack Higher power consumption in its transportation Ash disposal problem Erosion of induced draft fan blades Excessive fly ash discharge from the stack ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Large tonnage of refractory bricks are dried in a Tunnel kiln Rotary hearth furnace Muffle furnace Shaft furnace Tunnel kiln Rotary hearth furnace Muffle furnace Shaft furnace ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Ingress of cold air in the furnaces through cracks, charging doors, openings etc. Reduces the furnace draught All of these Reduces the flue gas temperature and makes the furnace atmosphere oxidising Increases the load on the induced draft fan Reduces the furnace draught All of these Reduces the flue gas temperature and makes the furnace atmosphere oxidising Increases the load on the induced draft fan ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In reverberatory furnace, charge is heated mainly by Conduction None of these Radiation of heat from the roof of the combustion chamber Natural convection Conduction None of these Radiation of heat from the roof of the combustion chamber Natural convection ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In a furnace operation, which is not preheated? Neither A nor B Both A and B Hydrocarbon containing fuel gases (e.g. coke oven gas, refinery gas etc.) Solid fuels Neither A nor B Both A and B Hydrocarbon containing fuel gases (e.g. coke oven gas, refinery gas etc.) Solid fuels ANSWER DOWNLOAD EXAMIANS APP
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