Question is ⇒ Heat transfer takes place through a liquid medium surrounding the submerged material under heating, in case of a/an, Options are ⇒ (A) blast furnace., (B) steam boiler., (C) salt bath furnace., (D) annealing furnace., (E) , Leave your comments or Download question paper.

Question is ⇒ Heat transfer takes place through a liquid medium surrounding the submerged material under heating, in case of a/an, Options are ⇒ (A) blast furnace., (B) steam boiler., (C) salt bath furnace., (D) annealing furnace., (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Heat transfer takes place through a liquid medium surrounding the submerged material under heating, in case of a/an
A.	blast furnace. [Wrong Answer]
B.	steam boiler. [Wrong Answer]
C.	salt bath furnace. [Correct Answer]
D.	annealing furnace. [Wrong Answer]
View Answer 3 -2 Explanation:- Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

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⇒ In salt bath furnace, heat is transferred to the charge mainly by
conduction
convection
radiation
none of these

⇒ Ceramic coating material for furnace refractory, which increases its emissivity and thus the radiation heat transfer rate in the furnace, comprises of
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zircon powder
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⇒ Furnace pressure is normally controlled by regulating the
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⇒ In a furnace operation, which is not preheated ?
Solid fuels.
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Both (a) and (b).
Neither (a) nor (b).

⇒ Maximum heat transfer in high temperature furnaces is by
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convection
radiation
either (a), (b) or (c); depends on the type of furnace

⇒ Unit of furnace loading is
ton stock/hr/m² hearth area
ton stock/hr
ton stock/m² hearth area
both (b) and (c)

⇒ In a furnace employing forced draught as compared to induced draught,
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the fan operates hot and hence blades are liable to corrosion and erosion.
positive pressure exists in the furnace.
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⇒ Which of the following is not a directly fired furnace ?
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current flow through a heating element.
none of these.

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⇒ Heat transfer rate to the stock/charge in the furnace does not depend upon the
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size of the furance.
use of waste heat recovery equipments.
thickness of the stock.

⇒ Turndown ratio of a burner gives an idea of the __________ in the furnace.
range of fuel firing rates
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⇒ Test specimen for determination of refractoriness under load (RUL) of a refractory is heated in a
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⇒ Regenerators are normally provided in the
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open hearth furnace.
by product coke ovens.
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Metallic recuperator
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arrangement of heating stock in the furnaces.
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Open hearth furnace.
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