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Furnace Technology MCQs | Page - 1

Dear candidates you will find MCQ questions of Furnace Technology here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

Q. 1) Overfire burning in a furnace is a phenomenon characterised by

(A) Supply of excess fuel
(B) Supply of excess air
(C) Burning carbon monoxide and other incombustible in upper zone of furnace by supplying more air
(D) None of these
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Q. 2) Which of the following variables does not affect the furnace capacity?

(A) Size of the furnace
(B) Gas velocity in furnace
(C) Ratio of wall surface to surface of stock
(D) None of these
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Q. 3) __________ is an indirectly heated furnace.

(A) Open hearth furnace
(B) Muffle furnace
(C) Soaking pit
(D) Reheating furnace
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Q. 4) Reducing atmosphere is maintained in a

(A) Calcination kiln
(B) Blast furnace
(C) Soaking pit
(D) L.D. converter
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Q. 5) Thermal efficiency of a limestone calcination rotary kiln may be around __________ percent.

(A) 20
(B) 40
(C) 65
(D) 80
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Q. 6) If fuel and air are mixed ahead of the burner, it is called a/an __________ burner.

(A) Premix
(B) Outside mixing type
(C) Rotary
(D) Diffusion
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Q. 7) Out of the following fuels used in a furnace exhausting flue gas at a temperature of 600°C, the percentage stack loss will be maximum in case of complete combustion of 

(A) Furnace oil with air
(B) Furnace oil with oxygen
(C) Blast furnace gas with air
(D) Blast furnace gas with oxygen
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Q. 8) Protective gas used in the annealing furnace for steel coil comprises of

(A) 95% N2 + 5% H2
(B) 5% H2 + 95% N2
(C) 100% CO
(D) 100% H2
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Q. 9) __________ furnace is not an electric furnace.

(A) Arc
(B) Resistance
(C) Induction
(D) Pot
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Q. 10) 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
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