PPL POF Questions with Complete Correct Answers | Grade A+

The deflection of the pointer of the ASI (Air Speed Indicator) in proportional to: Ans: D. Dynamic pressure The forces of lift and drag on an aerofoil are, respectively, normal and parallel to the: Ans: D. relative wind/airflow Compared to the relative airflow, air on top of a wing: Ans: A. pressure decreases, velocity increases The term 'angle of attack' is defined as the angle Ans: A. between the wing chord line and the relative wind If the continuity equation is applicable, what will happen to the air density (rho) if the cross sectional area of a tube changes? (low speed, subsonic and incompressible flow) Ans: D. rho1 = rho2 Static pressure in the air is exerted: Ans: B. in all directions Aerodynamic forces experienced on aircraft are directly proportional to which speed? Ans: C. Indicated airspeed (IAS) On a very hot day with ambient temperature higher than ISA, the pressure altitude is 20,000 ft. How much will the density altitude be? Ans: D. greater than 20,000ft Which boundary layer, when considering its velocity profile perpendicular to the flow, has the greatest change in velocity close to the surface? Ans: A. Turbulent boundary layer How are the speeds at stagnation point (V1) and point on the top surface of the airfoil (V2) related to the relative wind/airflow V