Major sources of noise in furnace operation arises from air inspirator – McqOptions

MCQOPTIONS

1.	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
B.	30
C.	70
D.	100
Answer» B. 30

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