Download JNTUA M.Tech 1st Sem 2016 Aug Supply 9D17106 Maintenance And Reliability Engineering Question Paper

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Code: 9D17106

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M.Tech I Semester Supplementary Examinations August 2016

MAINTENANCE & RELIABILITY ENGINEERING

(Refrigeration & Air Conditioning)

(For students admitted in 2012, 2013, 2014 & 2015 only)

Time: 3 hours

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Max. Marks: 60

Answer any FIVE questions

All questions carry equal marks

1. 1. Define probability. Explain various types of probabilities.
   2. Write a note on Poisson distribution.

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2. 1. Explain in brief any two types of hazard models.
   2. Sketch and explain bath tub curve.
3. 1. Derive an expression for reliability of a system for series configuration & parallel configuration.

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   2. A system has 10 identical components in series. If the system reliability is 0.95, find reliability of each component.
4. 1. Define the following term with mathematical equation.
      1. MTBF.
      2. MTTF.
      3. MTTR.

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      4. Maintainability.
   2. Differentiate between availability and maintainability with the help of Markov graph.
5. 1. Define failure. Explain in brief different modes of failures.

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   2. Define:
      1. Failure density (fa).
      2. Failure rate (z).
      3. Mean failure rate (h).
      4. Mean time to failure (MTTF).

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6. 1. Differentiate between X-rays and gamma rays. Mention the applications of the same.
   2. Explain with neat sketch, production of X-ray.
7. 1. List out different types of maintenance and explain any two in brief.

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   2. What is meant by condition monitoring? Explain in brief any two types of condition monitoring.
8. 1. Mention different reasons for wear monitoring. Explain any two methods of wear monitoring in brief.
   2. Explain in brief spectroscopic oil analysis.

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