Wheel–Rail Contact Patch Quiz

What is the approximate size of the contact patch?

• 10 cm²

• 5 cm²

• 20 cm²

• 2 cm²

What is the diameter of a typical train wheel?

• 1100 mm

• 500 mm

• 700 mm

• 900 mm

Which engineering aspect is related to the analysis of forces acting on structures?

• Friction and Traction

• Forces and Stress

• Wear and Maintenance

• Comfort and Safety

What enables traction, braking, and turning in trains?

• Lubrication

• Friction in the contact patch

• Wheel diameter

• Rail grinding

Which syllabus connection is related to wear and maintenance?

• H6.2

• H3.1

• H3.2

• H4.1

What can defects in the contact patch cause?

• Reduced friction

• Increased speed

• Improved traction

• Vibration and noise

Which factor is NOT a design consideration for the contact patch?

• Material color

• Wheel radius

• Lubrication

• Contact angle

What is rolling contact fatigue (RCF)?

• A lubrication method

• A type of wheel design

• A rail grinding technique

• A wear mechanism

What is the purpose of rail grinding?

• Reduce wheel size

• Change wheel color

• Manage track wear

• Increase speed

What is the impact of engineering innovation on quality of life and safety?

• H6.2

• H4.1

• H3.1

• H3.2