What is back pressure that will produce a sonic condition

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A convergent-divergent nozzle has a throat area of 100 mm² and an exit area of 175 mm². The inlet flow is helium at a total pressure of 1 MPa and a stagnation temperature of 375 K. What is the back pressure that will produce a sonic condition at the throat but a subsonic condition everywhere else?

Reference no: EM131238516

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