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Chemical Engineering
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Furnace Technology
Comments
Question
Protective gas used in the annealing furnace for steel coil comprises of
Options
A. 95% N
2
+ 5% H
2
B. 5% H
2
+ 9% N
2
C. 100% CO
D. 100 %H
2
Correct Answer
95% N
2
+ 5% H
2
Furnace Technology problems
Search Results
1. Reverberatory furnace is used for
Options
A. roasting/reduction of ores
B. annealing steel coil
C. heating air
D. steel melting
Show Answer
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Discuss
Correct Answer: roasting/reduction of ores
2. Dampers are located
Options
A. before the I.D fan
B. after the I.D. fan
C. near the top of the chimney
D. anywhere after the I.D. fan
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Correct Answer: before the I.D fan
3. Regenerators are used for waste heat recovery in
Options
A. by-product coke ovens
B. beehive coke oven
C. blast furnace stoves
D. soaking pits
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Correct Answer: by-product coke ovens
4. Turndown ratio of a burner gives an idea of the __________ in the furnace.
Options
A. range of fuel firing rates
B. volume of the combustion chamber
C. maximum heat input rate only
D. minimum heat input rate only
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Correct Answer: range of fuel firing rates
5. Which furnace employs natural draft?
Options
A. Coke oven
B. Boiler
C. Rotary kilns
D. L.D. converter
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Correct Answer: Coke oven
6. Reducing atmosphere is maintained in a
Options
A. calcination kiln
B. blast furnace
C. soaking pit
D. L.D. converter
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Correct Answer: blast furnace
7. Which one shows the diagramatic heat balance in a furnace?
Options
A. Sankey diagram
B. Cox chart
C. Ostwald chart
D. None of these
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Correct Answer: Sankey diagram
8. Artificial draught produced by a fan in the furnace can be controlled by the
Options
A. speed of the fan.
B. damper.
C. variation in the pitch of fan blades.
D. all (a), (b) and (c).
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Correct Answer: all (a), (b) and (c).
9. Size of the combustion chamber of a furnace depends upon the
Options
A. heat release rate of the fuel.
B. preheat temperature of fuel & air.
C. method of mixing the fuel & air.
D. all (a), (b) and (c).
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Correct Answer: all (a), (b) and (c).
10. Pot furnace which is either regenerative or recupterative, is used in the manufacture of
Options
A. glass
B. stainless steel
C. potteries
D. refractory bricks.
Show Answer
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Correct Answer: glass
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