Question

general, nozzle used in engines for subsonic aircraft are
a) Convergent – Divergent nozzle
b) Convergent
c) Divergent
d) None of these

Answer 1

Answer:

general, nozzle used in engines for subsonic aircraft are

a) Convergent – Divergent nozzle

b) Convergent

c) Divergent

d) None of these

The answer is d) none of these

Answer 2

Answer:

At subsonic speeds, the airflow constricts the exhaust to a convergent shape. When afterburning is selected and the aircraft speeds up, the two nozzles dilate, which allows the exhaust to form a convergent-divergent shape, speeding the exhaust gasses past.

Therefore the answer is (d) None of the above.