Solved question paper for EME Dec-2016 (B-TECH 1st-2nd)

Solved Question Paper

Elements of mechanical engineering Dec-2016

PTU • B-TECH • Mechanical Engineering • 1st-2nd • Dec-2016

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 understand by thermodynamic equilibrium?
    Short Answer 2 Marks Dec-2016 • PTU B-TECH
  2. What is first law of thermodynamics?
    Short Answer 2 Marks Dec-2016 • PTU B-TECH
  3. Distinguish between non-flow and flow processes.
    Short Answer 2 Marks Dec-2016 • PTU B-TECH
  4. State the Clausius statement of second law of thermodynamics.
    Short Answer 2 Marks Dec-2016 • PTU B-TECH
  5. What is Clausius inequality?
    Short Answer 2 Marks Dec-2016 • PTU B-TECH
  6. Draw p-v and T-S diagram for the Otto cycle.
    Short Answer 2 Marks Dec-2016 • PTU B-TECH
  7. Define mechanical advantage and velocity ratio.
    Short Answer 2 Marks Dec-2016 • PTU B-TECH
  8. Differentiate between mechanism and machines.
    Short Answer 2 Marks Dec-2016 • PTU B-TECH
  9. What is thermal stress?
    Short Answer 2 Marks Dec-2016 • PTU B-TECH
  10. What is meant by hardness of a material?
    Short Answer 2 Marks Dec-2016 • PTU B-TECH
  11. A pump forces 1.5 m3/min of water horizontally from an open well to a closed tank where the pressure is 0.9 MPa. Calculate the work the pump must do upon the water in an hour just to force water into the tank against the pressure.
    Long Answer 8 Marks Dec-2016 • PTU B-TECH
  12. A gas turbine receives gases from the combustion chamber at 7 bar and 650ºC with a velocity of 90 m/s. The gases leave the turbine at 1 bar with a velocity of 45 m/s. Calculate the work done if the expansion is isentropic. Assume γ = 1.333 and Cp = 1.11 kJ/kg.
    Long Answer 8 Marks Dec-2016 • PTU B-TECH
  13. 1 kg of air having an initial volume of 0.3 m3 is heated at constant pressure of 3.2 bar until the volume is doubled. Find the heat added.
    Long Answer Dec-2016 • PTU B-TECH
  14. 1 kg of air having an initial volume of 0.3 m3 is heated at constant pressure of 3.2 bar until the volume is doubled. Find the work done.
    Long Answer Dec-2016 • PTU B-TECH
  15. 4 kg of air is compressed in a reversible steady flow polytropic process, pV1.25 = C, from 1 bar and 30ºC to 10 bar. Calculate the work input, heat transferred and change in entropy.
    Long Answer 8 Marks Dec-2016 • PTU B-TECH
  16. Derive the expression for the ideal efficiency of Diesel cycle.
    Long Answer 8 Marks Dec-2016 • PTU B-TECH
  17. In a lifting machine, an effort of 30 N is required to raise a load of 1 kN. If the efficiency of the machine is 0.75, what is the velocity ratio?
    Long Answer 8 Marks Dec-2016 • PTU B-TECH
  18. In a lifting machine, if an effort of 59 N raised a load of 2 kN, what is now the efficiency?
    Long Answer 8 Marks Dec-2016 • PTU B-TECH
  19. In a lifting machine, what will be the effort required to raise a load of 6 kN?
    Long Answer 8 Marks Dec-2016 • PTU B-TECH
  20. In a differential wheel and axle, the diameter of the larger axle is 250 mm and that of the smaller 225 mm. The diameter of effort wheel is 500 mm. Find the velocity ratio. If an effort of 150 N lifts a load of 3.5 kN, what is the efficiency and effort lost in friction?
    Long Answer 8 Marks Dec-2016 • PTU B-TECH
  21. A steel bar of 25 mm diameter is loaded as shown in figure below. Calculate the stress in each portion and the total elongation. Take E = 200 GPa.
    Long Answer 8 Marks Dec-2016 • 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.