Furnace Technology Presence of SO₂ in furnace gases attacks the ferrous metal by way of Accelerating the rate of scaling Causing metal embrittlement All of these Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Accelerating the rate of scaling Causing metal embrittlement All of these Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Regenerators compared to the recuperators for the same duty Occupy more space All of these Are of smaller size Are less costly Occupy more space All of these Are of smaller size Are less costly ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Size of the combustion chamber of a furnace depends upon the Preheat temperature of fuel & air All of these Method of mixing the fuel & air Heat release rate of the fuel Preheat temperature of fuel & air All of these Method of mixing the fuel & air Heat release rate of the fuel ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Forced recirculation of furnace gases is practised To ensure uniform temperature To increase heat transfer by convection In furnaces, operating below 750°C All of these To ensure uniform temperature To increase heat transfer by convection In furnaces, operating below 750°C All of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Circulation of gases in furnace is caused by the Furnace pressure in conjunction with draft in flues Difference in density between hot and cold gases All of these Change in volume during a change of temperature Furnace pressure in conjunction with draft in flues Difference in density between hot and cold gases All of these Change in volume during a change of temperature ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The amount of combustible escaping uncon-sumed from the furnace, depends upon the Burner design (thoroughness of mixing versus stratification) Air supplied and furnace temperature All of these Air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by change of direction) Burner design (thoroughness of mixing versus stratification) Air supplied and furnace temperature All of these Air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by change of direction) ANSWER DOWNLOAD EXAMIANS APP
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