Solved question paper for EME May-2019 (B-TECH 1st-2nd)

Solved Question Paper

Elements of mechanical engineering May-2019

PTU • B-TECH • Mechanical Engineering • 1st-2nd • May-2019

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. Distinguish between Intensive and Extensive properties.
    Very Short Answer 2 Marks May-2019 • PTU B-TECH
  2. Distinguish between quasi static process and actual process.
    Very Short Answer 2 Marks May-2019 • PTU B-TECH
  3. State Zeroth Law of Thermodynamics.
    Very Short Answer 2 Marks May-2019 • PTU B-TECH
  4. Distinguish between internal energy and enthalpy.
    Very Short Answer 2 Marks May-2019 • PTU B-TECH
  5. What are positive and negative work interactions?
    Very Short Answer 2 Marks May-2019 • PTU B-TECH
  6. What is an air-standard efficiency?
    Very Short Answer 2 Marks May-2019 • PTU B-TECH
  7. Explain Poission's ratio.
    Very Short Answer 2 Marks May-2019 • PTU B-TECH
  8. Define weldability.
    Very Short Answer 2 Marks May-2019 • PTU B-TECH
  9. Enumerate the criteria for selection of materials for engineering applications.
    Very Short Answer 2 Marks May-2019 • PTU B-TECH
  10. Define polar moment of inertia.
    Very Short Answer 2 Marks May-2019 • PTU B-TECH
  11. When a system is taken from ‘a’ to ‘b’ along the path ‘acb’, 400 kJ of heat flows into the system and the system does 100 kJ of work. How much heat flows into the system along the path ‘adb’ if the work done is 50 kJ?
    Short Answer May-2019 • PTU B-TECH
  12. If the system is brought from state ‘b’ to state ‘a’ along the curved path ‘ba’ and if the work done on the system is 100 kJ, find out the heat transfer of the system. Does it absorb or liberate heat?
    Short Answer May-2019 • PTU B-TECH
  13. If the value of internal energy Ua = 0 and Ud = 200 kJ find the heat transfer in the process ad and db.
    Short Answer May-2019 • PTU B-TECH
  14. Derive steady flow energy equation for a single stream of fluid entering and leaving the control volume.
    Long Answer 8 Marks May-2019 • PTU B-TECH
  15. One mol of an ideal gas at 0.5 MPa and 300 K is heated at constant pressure till the volume is doubled and then it is allowed to expand reversibly and adiabatically till the temperature is reduced to 300 K. Calculate heat and work transfers. If it is desired to restore the system from final state to its initial state by a reversible isothermal process what amount of work is required to be done on the system?
    Long Answer 8 Marks May-2019 • PTU B-TECH
  16. Two reversible heat engines are arranged in series between temperatures 500°C and 0°C. The heat input from heat source at 500 °C is 300 kJ. The work output of the first engine is twice of the second engine. Determine T2, η1, η2 and Q3.
    Long Answer 8 Marks May-2019 • PTU B-TECH
  17. An engine working on the Otto cycle is supplied with air at 1.1 MPa, 35°C. The compression ratio is 8. Heat supplied is 2100 kJ/kg. Calculate the maximum pressure and temperature of the cycle, the cycle efficiency, and the mean effective pressure. (For air, cp = 1.005, cv = 0.718, and R = 0.287 kJ/kg K).
    Long Answer 8 Marks May-2019 • PTU B-TECH
  18. Explain classification of Engineering materials. Explain characteristics of key engineering materials used in manufacturing.
    Long Answer 8 Marks May-2019 • PTU B-TECH
  19. Prove the parallel axis theorem in the determination of moment of inertia of areas with the help of a neat sketch.
    Long Answer 8 Marks May-2019 • PTU B-TECH
  20. Find the centre of gravity of I section shown in the figure.
    Long Answer 8 Marks May-2019 • 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.