High noise levels produced during operation of fans and compressors can be reduced by using (A) Mufflers (silencers) (B) Acoustic absorbent (C) Lagging of noisy duct (D) None of these

High noise levels produced during operation of fans and compressors
can be reduced by using
(A) Mufflers (silencers)
(B) Acoustic absorbent
(C) Lagging of noisy duct
(D) None of these
by

1 Answer

Answer :

(A) Mufflers (silencers)
by

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