Principles Of Flight Leave a reply 0% Principles Of Flight 1 / 20 1. Q29 Which statement concerning the angle of attack is correct? A) A too large angle of attack may result in a loss of lift B) The angle of attack cannot be negative C) Increasing the angle of attack results in decreasing lift D) The angle of attack is constant throughout the flight 2 / 20 2. Q77 What has to be considered with regard to the center of gravity position? A) The center of gravity’s position can only be determined during flight. B) By moving the aileron trim tab, the center of gravity can be shifted into a correct position. C) By moving the elevator trim tab, the center of gravity can be shifted into a correct position. D) Only correct loading can assure a correct and safe center of gravity position. 3 / 20 3. Q4 What effects typically result from propeller icing? A) Reduced power output, decreasing RPM. B) Increased power output, increasing RPM. C) Increased power output, decreasing RPM. D) Reduced power output, increasing RPM. 4 / 20 4. Q47 During a stall, the lift… A) decreases and drag decreases. B) increases and drag increases. C) increases and drag decreases. D) decreases and drag increases. 5 / 20 5. Q31 The drag coefficient… A) cannot be lower than a non-negative, minimal value. B) is proportional to the lift coefficient. C) may range from zero to an infinite positive value. D) increases with increasing airspeed. 6 / 20 6. Q39 How do induced drag and parasite drag change with increasing airspeed during a horizontal and stable cruise flight? A) Induced drag increases and parasite drag increases B) Induced drag decreases and parasite drag increases C) Parasite drag decreases and induced drag increases D) Parasite drag decreases and induced drag decreases 7 / 20 7. Q76 The elevator moves an aeroplane around the… A) vertical axis. B) longitudinal axis. C) elevator axis. D) lateral axis. 8 / 20 8. Q8 If surrounded by airflow (v>0), any arbitrarily shaped body produces… A) drag and lift. B) lift without drag. C) drag. D) constant drag at any speed. 9 / 20 9. Q63 How does a laminar boundary layer differ from a turbulent boundary layer? A) The turbulent boundary layer is thicker and provides less skin-friction drag B) The laminar boundary layer is thinner and provides more skin-friction drag C) The turbulent boundary layer can follow the airfoil camber at higher angles of attack D) The laminar boundary layer produces lift, the turbulent boundary layer produces drag 10 / 20 10. Q82 Differential aileron deflection is used to… A) reduce wake turbulence. B) avoid a stall at low angles of attack. C) increase the rate of descent. D) keep the adverse yaw low. 11 / 20 11. Q50 The stall warning will be activated just before reaching which speed? A) VS B) VNE C) VX D) VR 12 / 20 12. Q101 What is meant by “ground effect”? A) Decrease of lift and decrease of induced drag close to the ground B) Increase of lift and increase of induced drag close to the ground C) Decrease of lift and increase of induced drag close to the ground D) Increase of lift and decrease of induced drag close to the ground 13 / 20 13. Q58 A take-off with flaps in take-off position causes… A) an increased rate of climb. B) a decrease in drag. C) an increased acceleration. D) a shortening of the take-off run. 14 / 20 14. Q98 In a co-ordinated turn, how is the relation between the load factor (n) and the stall speed (Vs)? A) n is greater than 1, Vs is smaller than in straight and level flight. B) n is smaller than 1, Vs is greater than in straight and level flight. C) n is smaller than 1, Vs is smaller than in straight and level flight. D) n is greater than 1, Vs is greater than in straight and level flight. 15 / 20 15. Q20 What pressure pattern can be observed at a lift-generating wing profile at positive angle of attack? A) Low pressure is created above, higher pressure below the profile B) Pressure below remains unchanged, lower pressure is created above the profile C) Pressure above remains unchanged, higher pressure is created below the profile D) High pressure is created above, lower pressure below the profile 16 / 20 16. Q18 Which point on the aerofoil is represented by number 1? See figure (PFA-009)Siehe Anlage 2 A) Transition point B) Center of pressure C) Stagnation point D) Separation point 17 / 20 17. Q28 Which option states a benefit of wing washout? A) Structurally the wing is made more rigid against rotation B) Greater hardness because the wing can withstand more torsion forces C) With the washout the form drag reduces at high speeds D) At high angles of attack the effectiveness of the aileron is retained as long as possible 18 / 20 18. Q69 What structural item provides directional stability to an airplane? A) Large elevator B) Differential aileron deflection C) Large vertical tail D) Wing dihedral 19 / 20 19. Q55 With regard to flaps, which of the following options provides a lift-increasing effect? A) Decreasing the angle of attack B) Decreasing the form drag C) Increasing the aerofoil camber D) Lowering the induced drag 20 / 20 20. Q64 What structural item provides lateral stability to an airplane? A) Elevator B) Wing dihedral C) Differential aileron deflection D) Vertical tail Your score is 0%