Combustion Gases with K = 1

Multiple Choice

Combustion gases with k = 1.34 enter a converging nozzle at stagnation temperature and pressure of 460°C and 780 kPa, and are discharged into the atmospheric air at 20°C and 100 kPa. The lowest pressure that will occur within the nozzle is

A) 27 kPa
B) 100 kPa
C) 321 kPa
D) 420 kPa
E) 780 kPa