What material are exhaust pipes usually made of to protect against corrosion and oxidation?

• Aluminum

• Titanium

• Steel

• Copper

Why are titanium exhaust pipes not widely fitted in vehicles?

• They are too heavy

• They are very expensive

• They are not durable

• They are difficult to install

What causes the exhaust noise of an 'un-silenced' engine?

• Low-pressure pulsations

• High-pressure pulsations

• Mechanical vibrations

• Electrical interference

What is the purpose of baffles in a capacity-type silencer?

• To increase gas flow

• To reduce engine power

• To create a turbulent zone

• To enhance sound quality

What type of Silencer is shown

• Catalytic-type silencer

• Composite-type silencer

• Absorption-type silencer

• Capacity-type silencer

What type of Silencer is shown

• Catalytic-type silencer

• Composite-type silencer

• Absorption-type silencer

• Capacity-type silencer

What type of Silencer is shown

• Catalytic-type silencer

• Composite-type silencer

• Absorption-type silencer

• Capacity-type silencer

What is the purpose of a well-designed exhaust system in an engine?

• To increase the engine's weight

• To improve engine power by using pressure pulses

• To reduce the engine's temperature

• To increase the engine's fuel consumption

What is an absorption-type silencer also known as?

• Burgess silencer

• Capacity silencer

• Composite silencer

• Resonator silencer

What material is commonly used in absorption-type silencers for sound absorption?

• Metal

• Glass fiber

• Plastic

• Rubber