Furnace Technology The heating capacity of muffle furnace depends on the Neither A nor B Both A & B Surface area & emissivity of the stock Properties of the muffle wall (temperature, area, emissivity) Neither A nor B Both A & B Surface area & emissivity of the stock Properties of the muffle wall (temperature, area, emissivity) ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The resistance furnace produces heat by the Electric arc struck between electrodes and the charge None of these Combination of induced current and skin effect Flow of current through a heating element Electric arc struck between electrodes and the charge None of these Combination of induced current and skin effect Flow of current through a heating element ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Means for giving direction to the circulation of gases in furnaces are Location of outlet ports and heating & combustion devices Arrangement of heating stock in the furnaces All of these Fans Location of outlet ports and heating & combustion devices Arrangement of heating stock in the furnaces All of these Fans ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Thermal efficiency of an open hearth furnace may be about __________ percent. 20 5 50 80 20 5 50 80 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Ceramic recuperators compared to metallic recuperators for the same duty Occupy more space Are lighter Have higher pressure differential between flue gas & air side Are less costly Occupy more space Are lighter Have higher pressure differential between flue gas & air side Are less costly ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Circulation of gases in furnace is caused by the Change in volume during a change of temperature Difference in density between hot and cold gases All of these Furnace pressure in conjunction with draft in flues Change in volume during a change of temperature Difference in density between hot and cold gases All of these Furnace pressure in conjunction with draft in flues ANSWER DOWNLOAD EXAMIANS APP
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