Solved question paper for EME Dec-2023 (B-TECH 1st-2nd)

Solved Question Paper

Elements of mechanical engineering Dec-2023

PTU • B-TECH • Civil Engineering • 1st-2nd • Dec-2023

elements of mechanical engineering previous year question papers on BRpaper are organized for students of Punjab Technical University’s Bachelor of Technology program, 1st-2nd semester. This section makes it easier to browse subject-wise old question papers for elements of mechanical engineering, so students can review how questions are typically framed in past exams and get a sense of the exam pattern. Many students search for elements of mechanical engineering question bank while preparing for exams, and this page is built to support exactly that kind of subject-wise browsing and revision. BRpaper is not the official website of Punjab Technical University or any institution, and it does not publish official notices or academic updates.

Solved Questions

Solved
  1. Define "intensive" and "extensive" thermodynamic properties.
    Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
  2. Distinguish between open and closed thermodynamic system.
    Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
  3. What do you mean by non-flow processes? Give example.
    Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
  4. Discuss the concept of control volume.
    Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
  5. Distinguish between heat pump and refrigerator.
    Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
  6. Discuss the concept of "regeneration" in gas power cycles.
    Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
  7. List some important applications of I.C. Engines.
    Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
  8. Discuss the concept of "hardness" as a material property.
    Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
  9. Name some common examples of non-ferrous metals.
    Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
  10. Define centroid with a suitable example.
    Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
  11. a) Explain the following terms : i) State, ii) Process, and iii) Cycle
    Very Short Answer Dec-2023 • PTU B-TECH
  12. b) The properties of a closed system change following the relation between pressure and volume as PV = 3.0 where P is in bar, V is in m^3. Calculate the work done when the pressure increases from 1.5 bar to 7.5 bar.
    Long Answer 8 Marks Dec-2023 • PTU B-TECH
  13. 0.44 kg of air at 180°C expands adiabatically to three times its original volume and during the process, there is a fall in temperature to 15°C. The work done during the process is 52.5 kJ. Calculate specific heats at constant pressure and volume.
    Long Answer 8 Marks Dec-2023 • PTU B-TECH
  14. a) State Clausius and Kelvin-Planck statements of second law of thermodynamics and prove their equivalence.
    Long Answer 8 Marks Dec-2023 • PTU B-TECH
  15. b) State and prove Clausius inequality.
    Long Answer 8 Marks Dec-2023 • PTU B-TECH
  16. a) Define entropy and prove that it is property of a system.
    Long Answer 8 Marks Dec-2023 • PTU B-TECH
  17. b) State and explain principle of increase of entropy.
    Long Answer 8 Marks Dec-2023 • PTU B-TECH
  18. Draw Otto cycle and derive its air standard efficiency and mean effective pressure.
    Long Answer 8 Marks Dec-2023 • PTU B-TECH
  19. a) Explain the following properties of Engineering materials : i) Strength, ii) Brittleness, iii) Toughness, and iv) Weldability.
    Long Answer 8 Marks Dec-2023 • PTU B-TECH
  20. b) What do you mean by composite materials? Distinguish between fibre reinforced and metal matrix composites.
    Long Answer 8 Marks Dec-2023 • PTU B-TECH
  21. a) Find the moment of inertial of a semi circle about its diametrical axis.
    Long Answer 8 Marks Dec-2023 • PTU B-TECH
  22. b) Find the centroid of a quarter of a circle.
    Long Answer 8 Marks Dec-2023 • PTU B-TECH
  23. Explain the construction and working of four stroke petrol engine.
    Long Answer 8 Marks Dec-2023 • PTU B-TECH

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01 Where can I find elements of mechanical engineering previous year question papers for Bachelor of Technology, 1st-2nd semester?

This page lists elements of mechanical engineering question papers uploaded for Punjab Technical University Bachelor of Technology, 1st-2nd semester, organized for subject-wise browsing where available.

02 Are these official Punjab Technical University question papers?

BRpaper is not the official website of Punjab Technical University. These papers are shared for reference and revision purposes only and are not official university material.

03 How can previous year elements of mechanical engineering papers help in exam preparation?

Reviewing past papers can help you understand how questions are typically framed, notice commonly repeated topics, and get a sense of the exam pattern before your own exam.

04 What kind of topics does elements of mechanical engineering usually cover?

The question papers here relate to the official elements of mechanical engineering syllabus set by the university for this course and semester.

05 Does this page include a elements of mechanical engineering question bank or solved answers?

This page focuses on providing access to the previous year question papers themselves. A separate question bank or solved answers may not be available for every paper.

06 Can I find papers for other subjects in the same Bachelor of Technology?

Yes, BRpaper organizes papers by university, course, stream, and semester, so you can browse other subjects within the same Punjab Technical University Bachelor of Technology.