Furnace Technology Regenerators as compared to recuperators for the same duty Involve higher initial cost All of these Store smaller quantity of waste heat Are lighter & compact Involve higher initial cost All of these Store smaller quantity of waste heat Are lighter & compact ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called __________ furnace. None of these Arc Low frequency induction Resistance None of these Arc Low frequency induction Resistance ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The purpose of controlling the furnace atmosphere is to prevent surface attack by Oxidation/scaling Either of the above Decarburising Sulphur penetration Oxidation/scaling Either of the above Decarburising Sulphur penetration 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. 6000 4500 3000 2000 6000 4500 3000 2000 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Presence of SO₂ in furnace gases attacks the ferrous metal by way of All of these Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Causing metal embrittlement Accelerating the rate of scaling All of these Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Causing metal embrittlement Accelerating the rate of scaling ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Advantages of use of preheated combustion air are Reduction in scale losses Increase in flame temperature Saving in fuel consumption All of these Reduction in scale losses Increase in flame temperature Saving in fuel consumption All of these ANSWER DOWNLOAD EXAMIANS APP
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