Inlet pressure recovery is defined as ______

A)
lift to drag ratio
B)
total dynamic pressure
C)
incoming velocity by incoming Mach number
D)
total pressure deliver to the engine divided by freestream total pressure

Correct Answer :   total pressure deliver to the engine divided by freestream total pressure


Explanation : Inlet pressure recovery is nothing but the total pressure which is deliver to the engine divided by the free stream total pressure. Dynamic pressure is exerted due to velocity of the fluid. Lift drag ratio is more important for the aerodynamics of the aircraft.