Anti-Noise:

The video discusses the noise issues in London's underground railway and introduces successful experiments with asbestos padding and welding to reduce noise by 40%. A demonstration shows the difference between untreated and treated sections, highlighting the impact on passenger conversations as trains enter silent areas.

What is one of the main drawbacks of traveling by the underground railway in London?

• Limited seating

• Noise levels

• Frequent delays

• High ticket prices

What material is being tested to reduce noise in the underground railway?

• Plastic

• Foam

• Asbestos

• Rubber

How much noise reduction is expected from the new welding technique?

• 50%

• 40%

• 30%

• 20%

What is the purpose of welding the railway line?

• To increase train speed

• To create an endless rail

• To reduce maintenance costs

• To improve track durability

What should passengers be cautious about in the quieter sections of the railway?

• Losing their belongings

• Getting off at the wrong station

• Being overheard during conversations

• Missing their stop