Interview question based on skill :
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Total Questions: 15
1. Select the incorrect statement from the following option.
Correct Answer is : Lubricant enhance corrosion
2. The viscosity of petroleum oil for hydraulic lifts is
Correct Answer is : Low
3. The science of friction, lubrication and wear is called
Correct Answer is : Tribology
4. On increasing the lubrication, the efficiency of the machine
Correct Answer is : Increases
5. The stearate ion has a ________ carbons long hydrocarbon chain.
Correct Answer is : 17
6. How many mechanisms are there for lubrication?
Correct Answer is : 3
7. The thickness of the lubricant film in the hydro dynamic lubrication is about __________
Correct Answer is : 1000oA
8. The liquid lubricants stick due to the _________ property.
Correct Answer is : Viscosity
9. The coefficient of friction of unlubricated surface ranges about _________
Correct Answer is : 0.1-1.5
10. The effectiveness of the hydro dynamic lubrication does not depends upon the ________
Correct Answer is : Area of shaft
11. The continuous fluid film cannot be maintained between the rubbing surfaces under the condition such as high load in boundary lubrication.
Correct Answer is : TRUE
12. In boundary lubrication, the coefficient of friction ranges about ______
Correct Answer is : 0.05-0.15
13. The wear and tear of metal surfaces are involved and _________ are formed in thin lubrication.
Correct Answer is : Welded junctions
14. Generation of heat takes place in __________ lubrication.
Correct Answer is : Extreme pressure lubrication
15. The liquid lubricant may be _______
Correct Answer is : Evaporated
