Furnace Technology The heating capacity of muffle furnace depends on the 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) Neither A nor B Surface area & emissivity of the stock Both A & B ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turn down ratio of a burner Is normally much more for a continuous furnace as compared to a batch furnace Should be 1:1 for a batch type furnace. Should be as low as possible i.e., 1 : 2 Is the ratio of maximum to minimum permissible heat input rates Is normally much more for a continuous furnace as compared to a batch furnace Should be 1:1 for a batch type furnace. Should be as low as possible i.e., 1 : 2 Is the ratio of maximum to minimum permissible heat input rates ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which is not accomplished in an underfired furnace? Reduction in the temperature of furnace gases Increase in heating capacity/m² of floor space Portection of the periphery of the charge from excessive radiation Elimination of cold spot at the bottom of the charge Reduction in the temperature of furnace gases Increase in heating capacity/m² of floor space Portection of the periphery of the charge from excessive radiation Elimination of cold spot at the bottom of the charge ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The rate of scaling of furnace stock depends upon the Temperature Nature of atmosphere All of these Time Temperature Nature of atmosphere All of these Time ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In order to maintain an oxidising atmosphere in a furnace, it should have More of excess air More of CO in flue gas Less of excess air More of CO₂ in flue gas More of excess air More of CO in flue gas Less of excess air More of CO₂ in flue gas ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following is a directly fired intermittant furnace? Walking beam reheating furnace Tower furnace Tunnel kiln Reverberatory furnace Walking beam reheating furnace Tower furnace Tunnel kiln Reverberatory furnace ANSWER DOWNLOAD EXAMIANS APP
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