02: Air flows isentropically through converging nozzle which has a throat of 7 cm?. The stagnation conditions are 130 kpa and 380 K. Find the exit pressure and mass flow rate if the atmospheric pressure is: (a) 88 kpa. (b) 40 kpa. (Take: K = 1.4, C, =1005 J/kg.k and R = 287 J/kg.k for air) %3D

02: Air flows isentropically through converging nozzle which has a throat of 7 cm?. The stagnation conditions are 130 kpa and 380 K. Find the exit pressure and mass flow rate if the atmospheric pressure is: (a) 88 kpa. (b) 40 kpa. (Take: K = 1.4, C, =1005 J/kg.k and R = 287 J/kg.k for air) %3D

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Q2: Air flows isentropically through converging nozzle which has a throat of 7 cm?. The stagnation conditions are 130 kpa and 380 K. Find the exit pressure and mass flow rate if the atmospheric pressure is: (a) 88 kpa. (b) 40 kpa. (Take: K = 1.4, Cp =1005 J/kg.k and R = 287 J/kg.k for air) %3!
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Q2: The large compressed-air tank shown in the figure bellow exhausts from a nozzle at an exit velocity of V235 m/s. Assuming isentropic flow, compute: a) the exit Mach number. b) the pressure in the tank. (take; k = 1.396, C, = 917 J/Kg.k and R = 260 J/Kg.k) air at 30 C tank conditions Pan= 101 LPa
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b. Air flows in a converging-diverging nozzle from stagnation conditions at P, = 500 kPa and T. = 400 K as shown in Fig.2. The exit Throat To static pressure is 450 kPa, and the throat ME Po and exit areas are 0.01 m? and 0.015 m2 Po respectively. Assuming isentropic flow, Supersonie nozzle Ag determine the Mach number, ME at exit and the mass flow rate th when the flow is supersonic in the divergence section of the PE (Ma, = 1) duct. (Take for air, K=1.4, and R= 287 m?/s?.K) Fiq.2
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Q2: Air (y = 1.4) enters a converging-diverging diffuser with a Mach number of 2.8, static pressure pi of 100 kPa, and a static temperature of 20°C. For the flow situation shown in Figure, find the exit velocity, exit static pressure, and exit stagnation pressure. Ans: Ve = 55.093 m/s; Pe = 2236.678 kPa; Poe = 2252.44 kPa i M₁ = 2.8 A₁ = 0.10 m² A₂ = 0.50 m² A₁ = 0.25 m²
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