Solved question paper for EME Dec-2008 (B-TECH 1st-2nd)

Solved Question Paper

Elements of mechanical engineering Dec-2008

PTU • B-TECH • Mechanical Engineering • 1st-2nd • Dec-2008

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. What do you mean by phase of a system?
    Short Answer 2 Marks Dec-2008 • PTU B-TECH
  2. What is meant by thermodynamic equilibrium?
    Short Answer 2 Marks Dec-2008 • PTU B-TECH
  3. Define enthalpy.
    Short Answer 2 Marks Dec-2008 • PTU B-TECH
  4. What do you understand by open system?
    Short Answer 2 Marks Dec-2008 • PTU B-TECH
  5. What is isothermal process?
    Short Answer 2 Marks Dec-2008 • PTU B-TECH
  6. Define third law of thermodynamics.
    Short Answer 2 Marks Dec-2008 • PTU B-TECH
  7. What do you understand by a four stroke engine?
    Short Answer 2 Marks Dec-2008 • PTU B-TECH
  8. Where do we use Diesel cycle?
    Short Answer 2 Marks Dec-2008 • PTU B-TECH
  9. Define ductility.
    Short Answer 2 Marks Dec-2008 • PTU B-TECH
  10. What is meant by mechanism?
    Short Answer 2 Marks Dec-2008 • PTU B-TECH
  11. What are state functions and how do they differ from path functions? Give examples of each.
    Long Answer 8 Marks Dec-2008 • PTU B-TECH
  12. A blower handles 1 kg/s of air at 20°C and consumes a power of 15 kW. The inlet and outlet velocities of air are 100 m/s and 150 m/s respectively. Find the exit air temperature, assuming adiabatic conditions. Take cp of air as 1.005 kJ/kg-K.
    Long Answer 8 Marks Dec-2008 • PTU B-TECH
  13. Derive an expression for 1st law of thermodynamics applied to a closed system. Define the internal energy of a system.
    Long Answer 8 Marks Dec-2008 • PTU B-TECH
  14. If a refrigerator is used for heating purpose in winter so that the atmosphere becomes the cold body and the room to be heated becomes hot body, how much heat would be available for heating for each kW input to the driving motor? The COP of the refrigerator is 5 and the electro mechanical efficiency of the motor is 90%. How does this compare with resistance heating?
    Long Answer 8 Marks Dec-2008 • PTU B-TECH
  15. Show that the efficiency of Otto cycle depends only on compression ratio.
    Long Answer 1 Marks Dec-2008 • PTU B-TECH
  16. Explain lateral strain, Young's modulus of elasticity and stress-strain curve.
    Long Answer 1 Marks Dec-2008 • PTU B-TECH
  17. Write notes on worm and worm wheel.
    Short Answer 1 Marks Dec-2008 • PTU B-TECH
  18. Write notes on Oldham's coupling.
    Short Answer 1 Marks Dec-2008 • PTU B-TECH
  19. An air standard Otto cycle has compression ratio 10, the compression begins at 37.8°C, 1 bar and maximum temperature of the cycle is 1050°C. Determine: (a) the heat supplied per kg of air, (b) the work done per kg of air, (c) the maximum pressure of the cycle, and (d) the thermal efficiency.
    Comprehension 1 Marks Dec-2008 • 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.