Download PTU B-Tech ME 2020 Dec 3rd Sem 59114 Applied Thermodynamics I Question Paper

Roll No.

Total No. of Questions: 18

Total No. of Pages : 02

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B.Tech.(ME) (2012 Onwards)/(Marine Engg.) (2013 Onwards) (Sem.-3)

APPLIED THERMODYNAMICS-I

Subject Code: BTME-304

M.Code : 59114

Time: 3 Hrs.

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Max. Marks: 60

INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY Consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

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SECTION-A

Answer briefly :

1. Enumerate the characteristics of a good fuel.
2. How I.C. engines are classified?
3. Write the function of knockmeter.

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4. Define Pure substance.
5. Define Dryness Fraction.
6. Discuss the working of Superheater.
7. What is the function of cooling tower?
8. Define Stage Efficiency of steam turbine.

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9. What are the functions of condenser in a steam plant?
10. State Dalton's law of partial pressure.

SECTION-B

11. Lay down the procedure for determination of minimum air required for complete combustion of coal.
12. Describe the phenomenon of detonation in I.C. engines. On what factors does detonation depend?

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13. Determine the external work done during the evaporation and internal latent heat at a pressure of 1 Mpa and dryness fraction of 0.80.
14. Explain the construction and working of a Lancashire boiler with the help of a suitable sketches.
15. The vacuum efficiency of a condenser is 96%. The temperature of condensate is 40 °C. If the barometer reads 752 mm of Hg, find the vacuum gauge reading of the condenser.

SECTION-C

16. Explain, with neat sketches, the sequence of events in the working of a two-stroke diesel engine.

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17. State the effects of the following parameter in a Rankine cycle :
    1. Steam pressure at inlet to turbine
    2. Steam temperature at inlet to turbine
    3. Steam pressure at exhaust
18. Dry saturated steam enters a nozzle at a pressure of 10 bar and with an initial velocity of 90 m/s. The outlet pressure is 6 bar and nozzle velocity is 435 m/s. The heat loss from the nozzle is 9 kJ/kg of steam flow. Calculate the dryness fraction and the area at the exit, if the area at the inlet is 1256 mm².

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NOTE: Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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