Chemical Engineering - Furnace Technology

Exercise :: Furnace Technology - Section 2

6. 

In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time ?

A. Recuperator
B. Regenerator
C. Waste heat boiler
D. None of these

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

7. 

An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called __________ furnace.

A. resistance
B. arc
C. low frequency induction
D. none of these

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

8. 

Turndown ratio of a burner gives an idea of the __________ in the furnace.

A. range of fuel firing rates
B. volume of the combustion chamber
C. maximum heat input rate only
D. minimum heat input rate only

Answer: Option A

Explanation:

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9. 

In low or standard frequency induction furnace, heat is produced by the

A. combination of induced current and skin effect.
B. induction and resistance.
C. current flow through a heating element.
D. none of these.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

10. 

Which furnace employs natural draft ?

A. Coke oven
B. Boiler
C. Rotary kilns
D. L.D. converter

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.