Furnace Technology The resistance furnace produces heat by the Flow of current through a heating element Combination of induced current and skin effect Electric arc struck between electrodes and the charge None of these Flow of current through a heating element Combination of induced current and skin effect Electric arc struck between electrodes and the charge None of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The reason for excessive clinker formation in gas producers is the All of these Use of fuel having too low an ash fusion temperature Development of hot spots in the fuel bed and an abnormally high rate of gasification Use of coal/coke containing a high % of fines and ash All of these Use of fuel having too low an ash fusion temperature Development of hot spots in the fuel bed and an abnormally high rate of gasification Use of coal/coke containing a high % of fines and ash ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Circulation of gases in furnace is caused by the Furnace pressure in conjunction with draft in flues All of these Change in volume during a change of temperature Difference in density between hot and cold gases Furnace pressure in conjunction with draft in flues All of these Change in volume during a change of temperature Difference in density between hot and cold gases ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turndown ratio of a burner gives an idea of the __________ in the furnace. 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 Minimum heat input rate only ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following accentuates clinker-ing troubles on furnace grate burning coal? Thick firebed and preheated primary air Low reactivity of carbonised residue containing high proportion of iron & sulphur All of these Low forced draft & fuel bed temperature Thick firebed and preheated primary air Low reactivity of carbonised residue containing high proportion of iron & sulphur All of these Low forced draft & fuel bed temperature ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology While the fuel fired furnace can be used upto a maximum temperature of about 1700°C, the electric furnace can be used upto a temperature of about __________ °C. 4500 3000 6000 2000 4500 3000 6000 2000 ANSWER DOWNLOAD EXAMIANS APP
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