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Posted Date: 20 Jul 2012 Posted By:: sankar Member Level: Gold Points: 5 (Rs. 1)
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2011 B.Tech Mechanical Engineering Jawaharlal Nehru Technological University, Anantapur 2nd year Tribology Exam Question paper
Perplexed regarding the latest trend of question paper pattern for 2nd year Tribology exam of Jawaharlal Nehru Technological University? You are at the right place as ISC is the only website which can provide you with original question papers of different universities. I have uploaded a latest question paper for 2nd year students who are appearing for Tribology of Mechanical Engineering of Jawaharlal Nehru Technological University. To get the tips regarding the question paper you are hereby suggested to download the same.
Jawaharlal Nehru Technological University, Anantapur
Answer Any Five Questions
All Questions Carry Equal Marks Max Marks:80
1. (a) What is the main di erence between hydrodynamic and hydrostatic lubrication?
(b) Are hydrostatic bearings e ective at high sliding speeds? Discuss? [8+8]
2. Explain various oil rings used for bearings? [16]
3. (a) Why is the Michell pad supported on a pivot?
(b) What level of friction coefficient is attained by a pad bearing? [8+8]
4. (a) What are the laws of friction?
(b) Differentiate boundary friction with dry friction? [8+8]
5. What other parameters, apart from viscosity, are signi cant when dealing with lubricants? Explain their role on the e ectiveness of the lubricant? [16]
6. Discuss about practical considerations of bearing design? [16]
7. What are the characteristics of Turcite bearing material? [16]
8. Derive an expression for load carrying capacity of hydrodynamic journal bearing stating the assumptions? [16]
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