In order to maintain an oxidising atmosphere in a furnace, it should have__________________?

Question: Fuel economy in furnaces can be achieved by
[A].

using oxygen enriched combustion air.

[B].

preheating the combustion air.

[C].

reducing the heat loss through furnace openings & doors.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: 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 gas

Answer: Option A

Explanation:

No answer description available for this question.

Question: 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).

Answer: Option D

Explanation:

No answer description available for this question.