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) — complete question paper · 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. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.
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