Furnace Technology The heating capacity of muffle furnace depends on the Neither A nor B Surface area & emissivity of the stock Both A & B Properties of the muffle wall (temperature, area, emissivity) Neither A nor B Surface area & emissivity of the stock Both A & B Properties of the muffle wall (temperature, area, emissivity) ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following accentuates clinker-ing troubles on furnace grate burning coal? Low forced draft & fuel bed temperature Low reactivity of carbonised residue containing high proportion of iron & sulphur Thick firebed and preheated primary air All of these Low forced draft & fuel bed temperature Low reactivity of carbonised residue containing high proportion of iron & sulphur Thick firebed and preheated primary air All of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Dampers are located After the I.D. fan Near the top of the chimney Anywhere after the I.D. fan Before the I.D fan After the I.D. fan Near the top of the chimney Anywhere after the I.D. fan Before the I.D fan ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of Preheating the primary air Combustion of coal by supplying it around the burner Drying of coal Transportation of coal Preheating the primary air Combustion of coal by supplying it around the burner Drying of coal Transportation of coal ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Metallic recuperators are not used for waste heat recovery, if the hot flue gas temperature is above __________ °C, because corrosion prevails at higher temperatures. 350 750 1250 1050 350 750 1250 1050 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turn down ratio of a burner Should be as low as possible i.e., 1 : 2 Is the ratio of maximum to minimum permissible heat input rates Should be 1:1 for a batch type furnace. Is normally much more for a continuous furnace as compared to a batch furnace Should be as low as possible i.e., 1 : 2 Is the ratio of maximum to minimum permissible heat input rates Should be 1:1 for a batch type furnace. Is normally much more for a continuous furnace as compared to a batch furnace ANSWER DOWNLOAD EXAMIANS APP
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