Tribology is one of the most important terminologies used in the industry. It is a branch of engineering that deals with the relative motion between two or more interacting bodies in contact. The tribology study majorly depends on friction, wear, and lubrication aspects. Let us understand and get the idea of the Most important interview or viva questions related to tribology.
Table of Contents
1. Define ‘Tribology’.
Tribology is made up of two Greek words, ‘Tribo’ and ‘Logy’. Tribos means rubbing and logia or logy means to study or knowledge. A study that deals with the bodies in relative motion including rubbing actions at design, production or operation stages.
2. What is the role of lubrication in minimizing the losses during machine operation?
Lubrication is a process by which lubricant is supplied between the bodies in relative motion to reduce the contact between them during the operation. The lubricant helps to reduce friction, hence reducing wear and minimizing power losses. The lubrication also helps to carry away the heat generated due to friction.
3. Give a few examples of desirable friction and desirable wear.
Walking on the earth, braking, and clutching are a few examples of desirable friction, and grinding of any material, writing, drawing with pencil or pen, etc. are examples of desirable wear.
4. Give a few examples/applications of maximum friction and minimum wear
Maximum friction means friction should assist us in a given application and minimum wear means, wear is undesirable in such application. Brake lining, clutch, and tires are examples of desirable friction with undesirable wear.
5. Give a few examples/applications of minimum friction and minimum wear
Bearings and gears are examples of minimum friction and minimum wear. In these examples, both friction and wear are undesirable.
6. Can you give a few comments on the design or ergonomics tribology aspects of the pen?
The function of the pen is to write. We need to design a pen in such a way that gives us less friction while writing (lucid writing experience). Second, in gripping, the pen should be designed to give a better grip with fingers to make it convenient to grip perfectly while writing. The diameter of the pen should be well within the range to give a smooth writing experience. So, all factors lead to a better pen design.
7. Why do we use grease as a lubrication medium in ceiling fans?
Because one cannot provide a continuous supply of oil along with a pump and sump. Once the grease is applied to the ball bearing, it runs for a longer time as the ceiling fan lasts.