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Applied Thermodynamics - III (April 2010)

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Total No. of Questions : 10] P1450 [Total No. of Pages : 2 [3764]-1012 B.E. (Mech.) APPLIED THERMODYNAMICS - III (1997 Course) (402043) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates : 1) Answer any 3 questions from each section. 2) Answers to the two sections must be written in separate answer books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) Standard air at zero velocity expands to M = 0.9. Find change in density. [8] b) Explain the following terms : i) iii) Mach angle. The zone of silence. [8] ii) Mach cone. Q2) a) Steam enters a convergent-divergent nozzle at a pressure of 22 bar and temperature of 300 C. The exit pressure is 4 bar. Steam flow rate is 11 kg/s. Find area of nozzle at throat and exit. [10] b) Discuss supersaturated flow through steam nozzles with neat diagrams.[8] Q3) a) Discuss compounding of impulse steam turbine. [8] b) Derive the expression of maximum diagram efficiency of single stage impulse turbine. [8] Q4) a) Explain working of air extraction pump with the help of a neat diagram. [8] b) Explain the following terms : i) Partial pressure. ii) iii) Vacuum efficiency. iv) [8] Condenser vacuum. Condenser efficiency. P.T.O.

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Additional Info : 1997 Course
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