Top 20 Questions of EME (B-TECH Electronics and Communication Engineering 1st-2nd)

Most Repeated Questions

Top 20 Questions of Elements of mechanical engineering

Previous year question paper with solutions for Top repeated questions of Elements of mechanical engineering

PTU • B-TECH • Electronics and Communication Engineering • 1st-2nd

Browse Top 20 questions of EME (B-TECH Electronics and Communication Engineering 1st-2nd) previous year question papers for Top repeated questions of Elements of mechanical engineering. This page helps EME students find semester-wise papers for revision, exam practice, and understanding previous exam patterns. These are the top twenty repeated questions identified from previous year papers for EME (B-TECH Electronics and Communication Engineering 1st-2nd), helping students focus on the most frequently asked topics.

Top repeated questions

Top 20
  1. 1.

    In an air standard Otto cycle, the pressure and temperature at the start of compression is 1 bar and 310 K. The pressure at the end of compression is 28 bar and at the end of heat addition is 75 bar. Calculate: (a) the compression ratio, (b) the maximum temperature in the cycle, (c) work ratio, (d) thermal efficiency.

    Appeared 16 times

    Appeared in: May 2018, May 2017, Dec 2017, May 2015, Dec 2014, May 2008, Dec 2008

  2. 2.

    Name and state the property introduced by the first law of thermodynamics.

    Appeared 13 times

    Appeared in: Dec 2023, May 2020, Dec 2020, May 2016, Dec 2016, May 2015, May 2013, Dec 2010, Dec 2009, May 2008

  3. 3.

    An engine working on otto-cycle has a volume of 0.45m^3, pressure 1 bar and temperature 30°C at the beginning of compression stroke. At the end of compression stroke, the pressure is 11 bar. 210kJ of heat is added at constant volume. Determine: f) Ideal power developed by the engine if the number of working cycles per minute is 210. Assume the cycle id reversible.

    Appeared 13 times

    Appeared in: May 2023, Dec 2020, May 2012

  4. 4.

    State the Zeroth law of Thermodynamics.

    Appeared 10 times

    Appeared in: May 2019, Dec 2018, May 2017, Dec 2017, May 2016, Dec 2016, May 2015, Dec 2008, Dec 2005

  5. 5.

    One kg of air enters a compressor at 105 Pa and 25°C having volume of 1.8 m3 and is compressed to 5 × 105 Pa isothermally. Determine the work done.

    Appeared 10 times

    Appeared in: May 2017, May 2015

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