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compressible flow: a converging-diverging nozzle has an area ratio of 5 and a stagnation pressure of 1...

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Mechanical Engineering

compressible flow:

a converging-diverging nozzle has an area ratio of 5 and astagnation pressure of 1 MPa. Assume that the gas in the nozzlebehaves exactly like air. Which of the following most accuratelygives the range of nozzle exit pressures for which the flow ischoked, but has subsonic flow at the nozzle exit?

a)990 kPa ?? 1 MPa
b)244 kPa ?? 1 MPa
c)21 kPa ?? 1MPa
d)1 kPa ?? 1 MPa
e)244 kPa ?? 990 kPa
f)21 kPa ?? 990 kPa
g)1 kPa ?? 990 kPa
h)21 kPa ?? 244 kPa
i)1 kPa ?? 244 kPa
j)1 kPa ?? 21 kPa

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