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แบบฝึกหัดที่ 7
เรื่อง ระบบไอเสีย
ตอนที่ 1 จงอธิบายความหมายในแต่ละข้อต่อไปนี้
1. หน่วยที่ใช้ในการวัดความดังเสียงเรียกว่าอะไร
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2. ค่าระดับเสียงของเครื่องยนต์ที่มนุษย์สามารถรับฟังได้มีความถี่เท่าไร
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3. ท่อไอเสียติดตั้งกับเครื่องยนต์เพื่อ
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4. ท่อพักไอเสียที่ติดตั้งอยู่ด้านท้ายของท่อไอเสียท าหน้าที่
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5. อุปกรณ์ก าจัดก๊าซพิษ (Catalytic Converter) ท าหน้าที่ใด
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