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What is muffling?

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in Energy Engineering by (91.0k points)
What is muffling?

(a) Reducing vibration

(b) Increasing the flow of gas

(c) Reducing noise

(d) Filtering the exhaust air

I got this question in examination.

The doubt is from Lubrication System, Intake and Exhaust Systems topic in section Diesel Engine Plant of Energy Engineering

1 Answer

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Best answer
The correct choice is (c) Reducing noise

Explanation: Muffling is the process of reducing the noise. The exhaust system must carry approximately 0.23m^3/min-0.30m^3/min of gases per kilowatt developed, at the average exhaust temperature. Muffling of the exhaust noise is done by using silencers located outside building.

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