abcdefghjklmnopqrstuvwxyz abcdefghijkimnopqrstuvwxyz abcdefghijklmnop xyz A converging nozzle has a throat area of 8.5 x10 m². Given that the stagnation air pressure and abcdefgh abcdefgh abcdefgh xyz temperature are 185 kPa and 450 K, respectively, and k is 1.4. abcdefghijklmnopqrstuvwxyz abcdefghij mnopqrstuvwxyz abcdefgh abcdefgh yz (a) Determine the critical throat pressure. abcdefghijklmnopqrstuvwxyz abcdefgh abcdefgh abcdefgh abcdefgh abcdefgh abcdefghijklmnopqrstu abcdefghijklmnopqrstuvw abcdefghijklmno Imnopqrstuvwxyz abcdefghijklmnopqrstuv nopqrstuvwxyz abcdefghijkimnopqrstuvwxyz abcdefghijklmnopqrstuve yz (b) Determine the exit Mach number, exit pressure and mass flow if the back pressure is 115 abcdefgh abcdefgh abcdefgh vwxyzkPa. State whether the flow is choked or not, abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrst abcdefghijklmnopqrst mnopqrstuvwxyz abcdefgh abcdefgh mnopqrstuvwxyz abcdefgh abcdefgh abcdefghijkimnopqrstuvwxyz abeciefghikimnopqrstuvwxyz abcdefgh klmnopqrstuvwxyz xyz (c) Determine the exit pressure if the back pressure is 80 kPa. State whether the flow is choked abcdefgh vwxyz or not. abcdefghijklmnopqrstuvwxyz mnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvw abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqr klmnopqrstuvwxyz pqrstuv abcdefghijklmnopqrstuvy

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