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Mechanical Engineering · Q241

Automobile Engineering

Engineering and GATE · Mechanical Engineering · question 241

Q241

The main function of an exhaust muffler is the

A.
Optimization of exhaust efficiency
B.
Reduction of exhaust noise
Answer
C.
Reduction of nitrogen oxide in the exhaust gases
D.
Reduction of the exhaust gas volume

Answer: Option B

Solution

Answer: Option B
Solution:
The function of a Muffler or a Silencer in Vehicle is to cool the exhaust gases by expansion through it and to reduce the noise of outgoing gases.
The exhaust gases must be discharged into the atmosphere with minimum restriction. The restriction in flow of exhaust gases causes back pressure.
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