question_answer

Consider the following statements: In a turbojet engine, thrust may be increased by:         

1. Increasing the jet velocity

2. Increasing the mass flow rate of air.

3. After burning of the fuel.

Of these statements:                      

A) 1 and 2 are correct                       

B) 2 and 3 are correct                       

C) 1 and 3 are correct                        

D) 1, 2 and 3 are correct