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Millwright – Lubrication: Questions & Answers
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Millwright – Lubrication: Questions & Answers
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Millwright – Lubrication: Questions & Answers1. What type of oil or grease would be used in a heavy load situation?
a. Synthetic oil
b. Extreme pressure lubricant
c. Mineral oil
d. Any hydraulic fluid ✔️Ans - b. Extreme pressure lubricant
2. The most common measurement of kinematic viscosity is what?
a. Viscosity
b. Centistokes
c. Viscosity index
d. Flash point ✔️Ans - b. Centistokes
3. When grease moves in a bearing, it tends to shear. This is known as:
a. Pour point
b. Viscosity index
c. Directional fluidity
d. Shear point ✔️Ans - c. Directional fluidity
4. What type of lubricant is used under shock load conditions?
a. Light oil
b. EP lubricant
c. Extra pressure lubricant
d. Synthetic oils ✔️Ans - b. EP lubricant
5. Viscosity is defined as which of the following?
a. Lubricant is thick
b. Measurement of a fluid's resistance to flow
c. Measure of a lubricants heat capacity
d. The lowest temperature an oil will flow ✔️Ans - b. Measurement of a
fluid's resistance to flow
, 6. A grease lubricant soluble in water is which of the following?
a. Sodium
b. Lithium
c. Magnesium
d. All oils and grease are soluble in water ✔️Ans - a. Sodium
7. How many cubic inches are in 1 US gallon?
a. 213
b. 321
c. 231
d. 100 ✔️Ans - c. 231
8. What does 1 cubic foot of oil weigh?
a. 68lbs
b. Between 45 and 49lbs
c. Between 55 and 58 lbs
d. 85lbs ✔️Ans - c. Between 55 and 58 lbs
9. What happens to a fluid when it vaporizes?
a. It explodes
b. It burns
c. It oxidizes
d. It implodes ✔️Ans - d. It implodes
10. What is detergent in oil used for?
a. It keeps the internal parts of a system clean
b. It improves viscosity
c. It helps lubricate cylinder wipers
d. It improves filtration if you have used to large of a filter ✔️Ans - a. It
keeps the internal parts of a system clean
11. What is aeration in reference to oils?
a. When oil is air entrained
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