Lubricants interview questions part 2
Lubricants interview questions part 2
Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. Only lamellar structure lubricants provide lubrication.
Correct Answer is : FALSE
2. If melting point increases, then the atomic bonds will ______
Correct Answer is : Be destroyed
3. The lubricant should have _____ vapor pressure.
Correct Answer is : Low
4. What is the range of coefficient of friction for solid lubricants?
Correct Answer is : 0.005-0.01
5. What is the thickness of the MoS2 film?
Correct Answer is : 15µm
6. Lubricating oil thickened with metallic soaps or by adding solid forms______
Correct Answer is : grease
7. Stabilized erosion of the fine solid particles in liquid is called_____
Correct Answer is : colloidal dispersion
8. 99% of grease is produced from______
Correct Answer is : petroleum oil
9. The more friction of the greases is due to their high______
Correct Answer is : viscosity
10. Slaked lime solution is mixed with tallow oil with constant stirring to produced_________
Correct Answer is : cup greases
11. Calcium complex grease can be made from_____
Correct Answer is : lime, fatty acid, acetic acid
12. Complex grease fibers are formed by reacting two dissimilar ______ with single_________
Correct Answer is : acids, alkali
13. Lithium soap greases are_______
Correct Answer is : water resistant
14. High mechanical stability is more for________
Correct Answer is : lithium soap greases
15. Sodium base greases can be utilized up to the temperature of______
Correct Answer is : 175oC
16. A good liquid lubricant must possess the property of ___________
Correct Answer is : High boiling point
17. Which of the following is not the liquid lubricant?
Correct Answer is : Grease
18. Castor oil is used for _______
Correct Answer is : Plastic industry
19. Petroleum oils are also called as _________
Correct Answer is : Hydrocarbon oils
20. Petrol captured the market up to the percentage of _____
Correct Answer is : 0.98
