Which is not a hearth furnace ?
Which is not a hearth furnace ?
A. Glass tank furnace
B. Open hearth furnace
C. Cupola
D. Reheating furnace
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In a muffle furnace, the muffle_________________?
In a muffle furnace, the muffle_________________?A. Retards the heat transfer
B. Assists in temperature equalisation in the charge
C. Permits the use of controlled atmosphere for the protection of stock
D. All A., B. and C.The resistance furnace produces heat by the__________________?
The resistance furnace produces heat by the__________________?A. Electric arc struck between electrodes and the charge
B. Flow of current through a heating element
C. Combination of induced current and skin effect
D. None of theseIn order to maintain an oxidising atmosphere in a furnace, it should have__________________?
In order to maintain an oxidising atmosphere in a furnace, it should have__________________?A. More of excess air
B. Less of excess air
C. More of CO in flue gas
D. More of CO2 in flue gasPresence of SO2 in furnace gases attacks the ferrous metal by way of_________________?
Presence of SO2 in furnace gases attacks the ferrous metal by way of_________________?A. Accelerating the rate of scaling
B. Causing metal embrittlement
C. Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at
high temperature
D. All A., B. and C.In reverberatory furnace, charge is heated mainly by
Question: In reverberatory furnace, charge is heated mainly by
[A].conduction. [B].
natural convection. [C].
radiation of heat from the roof of the combustion chamber. [D].
none of these. Answer: Option C
Explanation:
No answer description available for this question.
Neutral atmosphere is maintained in a/an ____________ furnace?
Neutral atmosphere is maintained in a/an ____________ furnace?A. Cold rolled steel coil annealing
B. Open hearth
C. Soaking pit
D. Walking beam reheating