Furnace Technology Turndown ratio of a burner gives an idea of the __________ in the furnace. Minimum heat input rate only Volume of the combustion chamber Maximum heat input rate only Range of fuel firing rates Minimum heat input rate only Volume of the combustion chamber Maximum heat input rate only Range of fuel firing rates ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In practical operation of any furnace, zero oxygen percentage or theoretical CO₂ percentage in flue gas is rarely achieved, because of Use of excessive positive draft in the furnace Imperfect mixing of fuel & air and infiltration of air Use of pulverised solid fuels Use of non-preheated combustion air Use of excessive positive draft in the furnace Imperfect mixing of fuel & air and infiltration of air Use of pulverised solid fuels Use of non-preheated combustion air ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Maximum thermal efficiency of boiler may be about __________ percent. 90 10 65 25 90 10 65 25 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Rotary kilns are used in the Cement manufacture Neither A nor B Both A and B Calcination of limestone & dolomite Cement manufacture Neither A nor B Both A and B Calcination of limestone & dolomite ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The resistance furnace produces heat by the Flow of current through a heating element None of these Electric arc struck between electrodes and the charge Combination of induced current and skin effect Flow of current through a heating element None of these Electric arc struck between electrodes and the charge Combination of induced current and skin effect 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 Erosion of induced draft fan blades Excessive fly ash discharge from the stack Ash disposal problem Higher power consumption in its transportation Erosion of induced draft fan blades Excessive fly ash discharge from the stack Ash disposal problem ANSWER DOWNLOAD EXAMIANS APP
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