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InsemMar 20242019 patternSE Mech

Applied Thermodynamics SPPU Insem Question Paper Mar 2024

All 4 questions from this SPPU insem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated Applied Thermodynamics questions
Subject code
202048
Pattern
2019 pattern
Exam
Insem
Session
Mar 2024
Max. marks
30
Time
1 Hour
Semester
IV
Paper code
[6268]-263

Printed for: S.E. (Automobile & Mechanical Engineering) (Insem)

Instructions to the candidates

  1. Answer Q.1 or Q.2, Q.3 or Q.4.
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right side indicate full marks.
  4. Assume Suitable data if necessary.
  5. Use of logarithmic tables slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed.

Questions

  1. Q1

    1. a)

      State the difference between Vapour compression Cycle and Vapour absorption cycle?

      [7]
    2. b)

      Air is supplied to a conditioned room at 17°C DBT and 50% RH. The air leaves the room at 25°C DBT during which RH increased by 5%. Find the Following Properties of air i) DPT of supply air ii) Change in enthalpy during the process iii) Change in specific humidity during the process. Show it on psychometric chart.

      [8]

  2. Q2

    1. a)

      Define the following terms; i) Saturated air ii) Wet bulb depression iii) Relative humidity iv) Dew point temperature

      [7]
    2. b)

      In a standard vapor compression refrigeration cycle, operating between an evaporator temperature of –10°C and a condenser temperature of 40°C, the enthalpy of the refrigerant, at the end of the compression is 220 kJ/kg. Show the cycle diagram on T-s plan. 2 T(°C) P(bar) hf(kJ/kg) hg(kJ/kg) –10 2.191 26.85 183.1 40 9.607 74.53 203.1 Calculate: i) COP of the cycle ii) The refrigerant capacity iii) Compressor power Assuming a refrigerant flow rate of 1kg/min.

      [8]

  3. Q3

    1. a)

      Discuss the following engine terminology with a neat sketch i) Top and Bottom Dead centre (T. D. C. and B. D. C.) ii) Clearance Volume (Vc) iii) Swept Volume (Vs) iv) Compression ratio (r)

      [8]
    2. b)

      Draw theoretical and actual P-V diagrams for an Otto cycle and list the assumptions made.

      [7]

  4. Q4

    1. a)

      Enlist 4 components used in IC engine and state their function, material and manufacturing process.

      [8]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [7]