Question 15
Thermal ExpansionThe thermal expansion of a solid is an advantage in
- A.Balance wheel of a watch
- B.Construction of steel rail lines
- C.Construction of large steel bridges
- D.Fitting of tyres on wheels
Show the answer and explanation
Answer: D (Fitting of tyres on wheels)
Explanation
A metal tyre is heated so it expands, slipped onto the wheel, and grips tightly as it cools. In bridges, rail lines and watch balance wheels expansion is a problem to be allowed for.