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Air enters a 20-mm diameter pipe at V=70m/s,T=25C and Pi=950kPa. The specific heat ratio and the friction factor are given as 1.4 and 0.006, respectively.

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Air enters a 20-mm diameter pipe at V=70m/s,T=25C and Pi=950kPa. The specific heat ratio and the friction factor are given as 1.4 and 0.006, respectively. a. For the analysis of compressible gas flow in the system, state any TWO (2) assumptions made. [2 marks] b. If the air exits at Ma2=0.5, determine the length of pipe and the corresponding pressure at the exit. [10 marks]

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