Furnace Technology Thermal efficiency of an open hearth furnace may be about __________ percent. 5 50 80 20 5 50 80 20 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Presence of SO₂ in furnace gases attacks the ferrous metal by way of Causing metal embrittlement Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Accelerating the rate of scaling All of these Causing metal embrittlement Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Accelerating the rate of scaling All of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turndown ratio of a burner gives an idea of the __________ in the furnace. Minimum heat input rate only Maximum heat input rate only Range of fuel firing rates Volume of the combustion chamber Minimum heat input rate only Maximum heat input rate only Range of fuel firing rates Volume of the combustion chamber ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Ostwald charts are meant for Computing the excess/deficiency of combustion air Calculation of flue gas temperature None of these Computation of flue gas analysis Computing the excess/deficiency of combustion air Calculation of flue gas temperature None of these Computation of flue gas analysis ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Regenerators are normally provided in the Glass melting furnace Open hearth furnace All of these By product coke ovens Glass melting furnace Open hearth furnace All of these By product coke ovens ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by Radiation Convection Conduction Can not be predicted Radiation Convection Conduction Can not be predicted ANSWER DOWNLOAD EXAMIANS APP
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