Question: Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels.
[A].3
30
70
100
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.