Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) Mechanical Engineering 2020 December 3rd Sem 59114 Applied Thermodynamics I Previous Question Paper
Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech.(ME) (2012 Onwards)/(Marine Engg.) (2013 Onwards) (Sem.?3)
APPLIED THERMODYNAMICS?I
Subject Code : BTME-304
M.Code : 59114
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
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.
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.
9.
What are the functions of condenser in a steam plant?
10. State Dalton's law of partial pressure.
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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?
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.
17. State the effects of the following parameter in a Rankine cycle :
a) Steam pressure at inlet to turbine
b) Steam temperature at inlet to turbine
c) Steam pressureat exhaust
18. Dry saturated steam enters a nozzle at a pressure of 10 bar and with an initial velocity of
90 m/s. The oulet 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.
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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This post was last modified on 13 February 2021