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EndsemNov 20242019 patternBE Mech

Quality & Reliability Engineering (QRE) SPPU Endsem Question Paper Nov 2024

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated QRE questions
Subject code
402050A
Pattern
2019 pattern
Exam
Endsem
Session
Nov 2024
Max. marks
70
Time
2½ Hours
Semester
VIII
Paper code
[6354]-627

Printed for: B.E. (Mechanical)

Instructions to the candidates

  1. Attempt Q1 or Q2, Q3 or Q4, Q5 or Q6, Q7 or Q8.
  2. Draw suitable neat diagrams, whenever necessary.
  3. Figure to the right indicate full marks.
  4. Assume suitable data if required.

Questions

  1. Q1

    1. a)

      Define the following (Any 4) : i) Failure Rate ii) Hazard Rate iii) Mean Time to Failure (MTTF) iv) Failure Density v) Availability

      Also asked:Nov 2023

      [8]
    2. b)

      Explain importance of reliability and what are the quality & reliability assurance rule?

      [9]

  2. Q2

    1. a)

      Explain uncertainty and its types.

      [8]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [9]

  3. Q3

    1. a)

      This part has equations that don’t show as text. Open the PDF to read it.

      [10]
    2. b)

      Consider system composed of three sub subsystem with estimated failure rate of  1 = 0.05,  2 = 0.003 and  3 = 0.00 1 failure per hour respectively. The system mission time of 20 hours. A system reliability of 0.95 is required. Find the reliability requirement for the subsystems.

      [8]

  4. Q4

    1. a)

      A system consists of six components connected as shown figure. If the system reliability is to be improve value of 0.85 for period of 10 hours, Determine the reliability goal of each component by using minimum effort method.

      [10]
    2. b)

      Explain in details any two system reliability models.

      [8]

  5. Q5

    1. a)

      Explain tie set and cut set method of reliability evaluation.

      [8]
    2. b)

      What is purpose of constructing the fault tree diagram? Explain the symbol used while constructing the fault tree diagram.

      [9]

  6. Q6

    1. a)

      What is FMEA? Explain procedural steps involved in FMEA.

      [9]
    2. b)

      A room with two light bulbs is operated by a single switch. By assuming the no light in the room as the top undesirable event construct the fault tree diagram.

      Also asked:May 2024

      [8]

  7. Q7

    1. a)

      Write short notes on (Any two) : i) Maintainability ii) Reliability Centered Maintenance (RCM) iii) Objectives of maintenance

      [8]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [10]

  8. Q8

    1. a)

      Difference between Highly Accelerated Life Testing (HALT) and Accelerated Life Testing (ALT).

      [8]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [10]