Lubrication Fundamentals - Quiz

Quiz Question

1. The inherent ability of oil to maintain component separation is called _____________ .
2. The following figure shows which kind of Lubrication?
Lubrication Fundamentals
Hydro static-film Lubrication
Hydro dynamic Lubrication
Elastohydro dynamic Lubrication
Boundary Lubrication
3. __________ is a result of metal-to-metal contact under conditions of high load, speed or temperature.
Adhesive wear
Corrosive wear
Fatigue wear
Abrasive wear
4. _________base oils are made from polyalphaolens (PAO), which are chemically engineered synthesized base stocks.
Group I
Group II
Group III
Group IV
5. __________ are characterized by straight chains of hydrocarbons where the hydrogen and carbon atoms are connected in a long linear composition, similar to a chain.
Paraffinic oils
Naphthenic oil
None of the above
6. Lubricants with inadequate viscosity for the application may lead to which of the following?
Increased metal-to-metal contact
Increased friction and wear
Increased oil consumption
All of the above
7. The viscosity index of a lubricating fluid refers to how much the viscosity of the fluid changes due to temperature.
8. The ___________is the lowest temperature at which the vapor above an oil sample will ignite when a flame is passed over it.
Flash point
Fire point
Auto-ignition point
Pour point
9. _________ is a lubricant’s ability to resist the process of hydrolysis, or the chemical reaction in which a chemical compound, like oil, is broken down by reaction with water. When a lubricant successfully resists hydrolysis it achieves hydrolytic stability.
Oil resistance
Water resistance
Dynamic resistance
Chemical resistance
10. The ___________ of a lubricant indicates its ability to neutralize contaminants such as combustion by-products and acidic materials.
Total neutrality number
Total base number
Total acidic number
None of the above
11. Additives enhance lubricant functioning by performing two critical functions i.e. they lessen destructive processes and enhance beneficial properties of the base oil.
12. ___________ added to lubricants minimize deposit formation in the high temperature areas of an engine.
None of the above
13. Absolute or dynamic viscosity is generally expressed in units known as
None of the above
14. ____________ occurs when long viscosity index improver molecules align themselves in the direction of the stress or flow.
Temporary shear
Permanent shear
No shear
None of the above
15. The tendency of a liquid to evaporate is referred to as volatility.