1. What are the main elements of tribology?
2. What is shown by the Stribeck diagram?
3. Which main three friction conditions are defined in a tribological system?
4. What is the unit for the kinematic viscosity of lubricating oils?
5. What contributes to an efficiency loss in the tribological system?
7. Which type of friction reduces the efficiency in case of hydrodynamic lubrication?
8. Where in a moving system can minimum frictional resistance be expected?
9. Why are additives used in lubricants?
10. What is the function of EP and AW additives?
11. How does graphite work?
12. Why are thickeners added to lubricating greases?
13. Which of the thickeners listed below is of organic origin?
14. What is the designation for a gear oil?
15. What does „2” signify in the designation KP2K-40 as per DIN 51502?
16. Which is the ideal lubrication condition in a bearing?
17. What is the main difference between the lubrication of gearings and bearings?
18. The development of hydrodynamic lubrication in gear drives is subject to …
19. What is the formula to easily calculate the module?
20. What is not a wear type and mechanism in a bearing or a gear?
21. What are the components of a plain bearing?