Lubricants Interview Questions - 2 | Snaprecruit.com
Lubricants Interview Questions - 2 | Snaprecruit.com
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Lubricants interview questions part 2
Lubricants interview questions part 2
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Total Questions: 20
1. Only lamellar structure lubricants provide lubrication.
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
FALSE
2. If melting point increases, then the atomic bonds will ______
A. Become strong
B. Become weak
C. Be destroyed
D. Be with moderate strength
Show Correct Answer
Correct Answer is :
Be destroyed
3. The lubricant should have _____ vapor pressure.
A. High
B. Extreme
C. Moderate
D. Low
Show Correct Answer
Correct Answer is :
Low
4. What is the range of coefficient of friction for solid lubricants?
A. 0.005-0.01
B. 0.001-0.01
C. 0.0001-0.001
D. 0.0005-0.001
Show Correct Answer
Correct Answer is :
0.005-0.01
5. What is the thickness of the MoS2 film?
A. 10µm
B. 15µm
C. 5µm
D. 20µm
Show Correct Answer
Correct Answer is :
15µm
6. Lubricating oil thickened with metallic soaps or by adding solid forms______
A. grease
B. vaselines
C. oils
D. petrol
Show Correct Answer
Correct Answer is :
grease
7. Stabilized erosion of the fine solid particles in liquid is called_____
A. colloidal suspension
B. molecular suspension
C. colloidal dispersion
D. molecular dispersion
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Correct Answer is :
colloidal dispersion
8. 99% of grease is produced from______
A. petroleum oil
B. olive oil
C. castor oil
D. whale oil
Show Correct Answer
Correct Answer is :
petroleum oil
9. The more friction of the greases is due to their high______
A. velocity
B. viscosity
C. temperature coefficient
D. buoyancy
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Correct Answer is :
viscosity
10. Slaked lime solution is mixed with tallow oil with constant stirring to produced_________
A. solution base greases
B. cup greases
C. complex greases
D. lithium base greases
Show Correct Answer
Correct Answer is :
cup greases
11. Calcium complex grease can be made from_____
A. lime, fatty acid, acetic acid
B. calcium, lime, acetic acid
C. calcium, lime, acetic acid
D. lime, calcium, acetic acid
Show Correct Answer
Correct Answer is :
lime, fatty acid, acetic acid
12. Complex grease fibers are formed by reacting two dissimilar ______ with single_________
A. base, alkali
B. alkali, acids
C. alkali, base
D. acids, alkali
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Correct Answer is :
acids, alkali
13. Lithium soap greases are_______
A. temperature resistant
B. fire resistant
C. water resistant
D. pressure resistant
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Correct Answer is :
water resistant
14. High mechanical stability is more for________
A. sodium base greases
B. lithium soap greases
C. complex greases
D. cup greases
Show Correct Answer
Correct Answer is :
lithium soap greases
15. Sodium base greases can be utilized up to the temperature of______
A. 175oC
B. 100oC
C. 75oC
D. 80oC
Show Correct Answer
Correct Answer is :
175oC
16. A good liquid lubricant must possess the property of ___________
A. Low viscosity
B. High boiling point
C. High freezing point
D. Low oiliness
Show Correct Answer
Correct Answer is :
High boiling point
17. Which of the following is not the liquid lubricant?
A. Olive oil
B. Palm oil
C. Castor oil
D. Grease
Show Correct Answer
Correct Answer is :
Grease
18. Castor oil is used for _______
A. Plastic industry
B. For guns
C. For sewing machines
D. Light machinery
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Correct Answer is :
Plastic industry
19. Petroleum oils are also called as _________
A. Petrol oils
B. Hydrocarbon oils
C. Fatty oils
D. Whale oil
Show Correct Answer
Correct Answer is :
Hydrocarbon oils
20. Petrol captured the market up to the percentage of _____
A. 1
B. 0.9
C. 0.98
D. 0.75
Show Correct Answer
Correct Answer is :
0.98
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