Artificial draught produced by a fan in the furnace can be controlled by the

Question: Artificial draught produced by a fan in the furnace can be controlled by the
[A].

speed of the fan.

[B].

damper.

[C].

variation in the pitch of fan blades.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.