Lubricants MCQ Quiz - Multiple Choice Questions & Answers

1. Viscosity index can be defined as

1. (L-U / L-H) X 100
2. (L+U / L-H) X 100
3. (L-H / L-U) X 100
4. (L-H / L+U) X 100

2. Animal and vegetable oils are also used as

1. Oiliness carrier
2. Blending agent
3. Solvent agent
4. Extreme pressure additives

3. Animal and vegetable oils possess

1. Good oiliness
2. Poor oiliness
3. Optimum oiliness
4. None of above

4. Antiwear additive in extreme pressure additive is

1. Soapstone
2. Tricresyl phosphate
3. Mica
4. Graphite

5. Calcium soap base grease is also called as

1. Soap grease
2. Greases
3. Axle grease
4. Cup grease

6. Coefficient of friction for boundary lubrication is

1. 0.5 to 15
2. 0.005 to 0.05
3. 0.5 to 0.15
4. 0.05 to 0.15

7. Coefficient of friction in fluid film or hydrodynamic lubrication is

1. 0.1 to 0.3
2. 0.01 to 0.03
3. 0.001 to 0.03
4. None of above

8. Ethanol is used as

1. Polymeric thickener
2. Polymer
3. Polymeric thinner
4. None of above

9. Graphite is .............. lubricant.

1. Solid
2. Liquid
3. Semi solid
4. None of above

10. Identify liquid lubricant from the following

1. Graphite
2. Lubricating oil
3. Mo Disulphide
4. Soapstone