Tribology (BME063) - AKTU Question Paper 2024-25
B.Tech · Semester 6 · Free PDF Download
This is the official AKTU Tribology Previous Year Question Paper for B.Tech Semester 6, academic session 2024-25. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.
Course:B.Tech
Semester:Semester 6
Session:2024-25
University:AKTU / UPTU
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Questions Asked in 2024-25
Tribology (BME063) — extracted question text · 100 marks · 3 Hours
Section AAttempt all questions in brief. 2 x 1 0 = 2 0
- aDefine viscosity index and its significance
- bWhat are the primary causes of friction?
- cList the different modes of lubrication
- dWhat is the role of lubricant additives?
- eDifferentiate between adhesive and abrasive wear
- fState any two properties of greases as lubricants
- gDefine minimum oil film thickness in hydrodynamic bearings. 3 K 2
- hWhat are the functions of solid lubricants? 4 K2 i. Explain the term “friction angle” with respect to screw threads. 5 K2 j. List two examples of tribo-design considerations in kinematic pairs
Section BAttempt any three of the following: 10 x 3 = 30
- aExplain the dependence of oil viscosity on temperature and p ressure with suitable graphs
- bDiscuss different theories of dry friction in detail
- cExplain the mechanism of pressure development in hydrodynamic bearings
- dDescribe the types and characteristics of wear-resistant coa tings used for solid lubrication
- eDiscuss the tribological analysis of belt drives and cam follower systems
Section CAttempt any one part of the following: 10 x 1 = 10
- aDescribe various properties of lubricants and their significance
- bExplain the differences between mineral oil-based and synthetic lubricants
- aClassify different types of wear and explain with diagrams. 2 K 4
- bDescribe various methods used for measuring friction and wear
- aExplain squeeze film and elasto-hydrodynamic lubrication with applications
- bDiscuss various types of rolling element and gas-lubricated bearings
- aDescribe deposition techniques used for applying solid lubricants
- bDiscuss friction and wear characteristics of lamellar solids. 4 K 4
- aExplain the operation and tribological design of a centrifugal clutch
- bDescribe point contact lubrication and its application in kinematic pairs
Question text is extracted from the official AKTU question paper PDF above. Check the original PDF for equations, diagrams and complete wording. Extracted: 2026-08-23.
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