Virtual Labs

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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Effects of Lubrication

Choose difficulty:

Beginner

Intermediate

Advanced

1. Frictional heat arises in tribological bodies from

a: Surface asperities in contact with each other Explanation

Explanation

b: Wear debris causing friction Explanation

Explanation

c: Presence of lubricant film Explanation

Explanation

d: High thermal conductivity of tribosurfaces Explanation

Explanation

2. The primary function of lubricant is

a: To reduce the friction between tribosurfaces Explanation

Explanation

b: To improve the aesthetics of tribosurfaces Explanation

Explanation

c: To increase the efficiency of moving parts Explanation

Explanation

d: To transfer load from one component to another Explanation

Explanation

3. The machine will operate_________ when lubricant is used.

a: Quickly Explanation

Explanation

b: With increased friction Explanation

Explanation

c: With cleanliness Explanation

Explanation

d: Without noise Explanation

Explanation

4. Which of the following is the most important property of the lubricant?

a: Density Explanation

Explanation

b: Smell Explanation

Explanation

c: Viscosity Explanation

Explanation

d: Melting point Explanation

Explanation

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