Question 11 (5 points) A subsonic jet is cruising at Mo=0.85. Upon entering the intake, the airflow decreases to M1 = 0.65. Calculate the inlet-lip pressure ratio. Note: y = 1.4 (Hint: See section 6.7) P1/Po= 1.02 OPI/Po=0.83 P1/Po= 1.21 P1/Po= 1.13 Question 12 (5 points) What happens to the exhaust pressure when the exhaust nozzle expansion is less than that needed for a perfect expansion? O The exhaust exit static pressure is less than the ambient pressure because the nozzle is overexpanded. The exhaust exit static pressure is less than the ambient pressure because the nozzle is underexpanded. The exhaust exit static pressure is greater than the ambient pressure because the nozzle is overexpanded. The exhaust exit static pressure is greater than the ambient pressure because the nozzle is underexpanded.