2_POF EXAM PREP

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tsampikos pompou
Created by tsampikos pompou over 3 years ago
tsampikos pompou
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POF EXAM PREP
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Question 1

Question
106 How can the ground effect affect an airplane]
Answer
  • O to take off before reaching the manufacturer speed for take off
  • O to sink back on the runway just after take off
  • O to be unable to take off even after passing the calculated take off speed
  • O high rate of descent and a hard landing during approach

Question 2

Question
107 Which unwanted effect may the pilot experience during take off due to the ground effect]
Answer
  • O to take off before reaching the manufacturer speed for take off
  • O to be unable to take off even after passing the calculated take off speed
  • O to sink back on the runway just after take off
  • O to experience difficulties during the first 20 feet of climb after take off

Question 3

Question
108 During landing the ground effect is more noticeable]
Answer
  • O When the height of the aircraft from the runway is less than half its wing span
  • O When the height of the aircraft from the runway is equal to twice its wing span
  • O when descending at a high angle of attack
  • O when descending at a speed close to the stall speed

Question 4

Question
109 At what altitude, can the ground effect affect an airplane]
Answer
  • O equal to the wing span
  • O between 100 and 200 feet above the runway in calm wind conditions
  • O at less than half the wing span
  • O 3 or 4 times the wing span

Question 5

Question
110 Wake turbulence are more intense when the aircraft creating them is
Answer
  • O heavy, clean and slow
  • O light and fast
  • O heavy and fast

Question 6

Question
111 wing tip vortices are created only when the aircraft...
Answer
  • O produces lift
  • O is flying at high speed
  • O is big
  • O no correct answer

Question 7

Question
112 Wing tip vortices have a tendency
Answer
  • O to sink behind the aircraft that creates them
  • O to climb and reach the traffic pattern altitude
  • O to climb and spread left and right
  • O to remain exactly behind and at the same altitude as the aircraft that created them

Question 8

Question
113 When a pilot is landing behind a big aircraft, he has to keep his path clear of wake turbulence by flying
Answer
  • O above the path of the big airplane and by landing after its the landing spot
  • O below the path of the big airplane and by landing before its the landing spot
  • O above the path of the big airplane and by landing before its the landing spot
  • O below the path of the big airplane by landing after its the landing spot

Question 9

Question
114 When a pilot is taking off behind a big aircraft, he has to keep his path clear of wake turbulence by flying
Answer
  • O higher and to the upwind side of the taking off aircraft
  • O lower and to the downwind side of the taking off aircraft
  • O lower and to the upwind side of the taking off aircraft
  • O higher and to the downwind side of the taking off aircraft

Question 10

Question
115 Aircraft's Empty weight includes...
Answer
  • O hydraulic fluid, oil and unuseable fuel
  • O only the airframe, the engine and the equipment installed by the manufacturer
  • O Fuel and Oil tanks full but without the weight of the crew and baggage
  • O unusable fuel and provisional equipment ex. potable water e.t.c.

Question 11

Question
116 The four forces acting on an airplane in flight are?
Answer
  • O lift, weight, thrust, and drug
  • O lift, weight, gravity, and thrust
  • O lift, gravity, power, and friction
  • O lift, power, thrust, and drug

Question 12

Question
117 What force makes an airplane turn:
Answer
  • O the horizontal component of lift
  • O the vertical component of lift
  • O centrifugal force
  • O Bernoulli's force

Question 13

Question
118 During an approach to a stall, an increased load factor will cause the airplane to :
Answer
  • O stall at a higher airspeed
  • O have a tendency to spin
  • O be more difficult to control
  • O turn left

Question 14

Question
119 The most important rule to remember in the event of a power failure after becoming airborne is to:
Answer
  • O immediately establish the proper gliding attitude and airspeed
  • O quickly check the fuel supply for possible fuel exhaustion
  • O determine the wind direction to plan for the forced landing
  • O determine the reasons for the power failure

Question 15

Question
120 The amount of excess load that can imposed on the wing of an airplane depends upon the:
Answer
  • O speed of the airplane
  • O position of the CG
  • O abruptness at which the load is applied
  • O wind direction

Question 16

Question
121 Which basic flight maneuver increases the load factor on an airplane as compared to straight-and-level flight?
Answer
  • O turns
  • O climbs
  • O stalls
  • O descents

Question 17

Question
122 When does the P- factor cause the airplane to yaw to the left:
Answer
  • O when at high angles of attack
  • O when at low angles of attack
  • O when at high airspeed
  • O when at low airspeed

Question 18

Question
126 In what flight condition is torque effect the greatest in a single-engine airplane?
Answer
  • O Low airspeed, high power, high angle of attack
  • O Low airspeed, low power, low angle of attack
  • O High airspeed, high power, high angle of attack
  • O High airspeed, high power, low angle of attack

Question 19

Question
127 During a spin to the left, which wing(s) s/are stalled?
Answer
  • O both wings are stalled
  • O neither wing is stalled
  • O only the left wing is stalled
  • O only the right wing is stalled

Question 20

Question
128 What is the purpose of the rudder on an airplane?
Answer
  • O to control yaw
  • O to control over banking tendency
  • O to control roll
  • O to control pitch

Question 21

Question
129 Loading an airplane to the most aft CG will cause the airplane to be:
Answer
  • O less stable at all speeds
  • O less stable at low speeds, but more stable at high speeds
  • O less stable at high speeds, but more stable at low speeds
  • O more stable at all speeds

Question 22

Question
130 In what flight condition must an aircraft be placed in order to spin?
Answer
  • O stalled
  • O in a steep diving spiral
  • O in a steep diving spiralL
  • O during a climb

Question 23

Question
131 An airplane said to be inherently stable will :
Answer
  • O require less effort to control
  • O be difficult to stall
  • O not spin
  • O be difficult to turn

Question 24

Question
132 What determines the longitudinal stability of an airplane?
Answer
  • O the location of the CG with respect to the center of lift
  • O the effectiveness of the horizontal stabilizer, and rudder
  • O the weight of the airplane
  • O the direction of the relative wind

Question 25

Question
133 Ground effect is most likely to result in which problem?
Answer
  • O becoming airborne before reaching recommended takeoff speed
  • O settling to the surface abruptly during landing
  • O inability to get airborne even though airspeed is sufficient for normal take off needs
  • O inability to land in short runways

Question 26

Question
134 Angle of attack is defined as the angle between the chord line of an airfoil and the:
Answer
  • O direction of the relative wind
  • O longitudinal axis f the airplane
  • O normal axis of the airplane
  • O lateral axis of the airplane

Question 27

Question
135 One of the main functions of flaps during approach and landing is to:
Answer
  • O increase the angle of descent without increasing the airspeed
  • O decrease the angle of descent without increasing the airspeed
  • O permit a touchdown at a higher airspeed
  • O decrease the angle of descent and increase the airspeed

Question 28

Question
136 What is one purpose of wing flaps?
Answer
  • O to enable the pilot to make steeper approaches to a landing without increasing the airspeed
  • O to relieve the pilot of maintaining continuous pressure on the controls
  • O to decrease wing area to vary lift
  • O to help in landing with increasing speed

Question 29

Question
137 The angle of attack at which an airplane wing stalls will:
Answer
  • O remain the same regardless of gross weight
  • O increase if the CG is moved forward
  • O change with an increase in gross weight
  • O decrease if the CG is moved forward

Question 30

Question
138 Floating caused by the phenomenon of ground effect will be most realized during an approach to land when:
Answer
  • O at less than the length of the wingspan above the surface
  • O at twice the length of the wingspan above the surface
  • O at a higher than normal angle of attack
  • O landing with tail wind

Question 31

Question
139 When are the four forces that act on an airplane in equilibrium?
Answer
  • O During unaccelerated flight
  • O When the aircraft is accelerating
  • O When the aircraft is at rest on the ground
  • O at MSL

Question 32

Question
140 What is the relationship of lift, drug, thrust, and weight when the airplane is in straight-and level flight?
Answer
  • O Lift equals weight and thrust equals drag
  • O Lift, drug and weight equal thrust
  • O Lift and weight equal thrust and drug
  • O Thrust, drug and weight equal lift

Question 33

Question
141 What is the effect of deploying trailing edge flaps?
Answer
  • O Increases CL and decreases Vs
  • O Increases CL and Vs
  • O Decreases CL and Vs
  • O Decreases CL and increases Vs

Question 34

Question
142 What is the effect of deploying leading edge slats?
Answer
  • O Energising boundary layer and decreasing Vs
  • O Energising boundary layer and increasing Vs
  • O De-energising boundary layer and decreasing Vs
  • O De-energising boundary layer and increasing Vs

Question 35

Question
143 What is the effect on wing pitching moment, of deploying trailing edge flaps prior to landing?
Answer
  • O Nose up pitching moment replaced by a nose down pitching moments.
  • O Increased nose down pitching moment.
  • O Decreased nose down pitching moment.
  • O Increased nose up pitching moment.

Question 36

Question
144 What effect does deployment of trailing edge flaps have on stalling angle of attack?
Answer
  • O Decreased stalling angle.
  • O No change.
  • O Increased stalling angle.
  • O Increased or decreased stalling angle depending on wing sweep angle.

Question 37

Question
145 What trailing edge flap angle will give the minimum stalling speed?
Answer
  • O Maximum deflection.
  • O Zero degrees.
  • O 20 degrees.
  • O 30 degrees.

Question 38

Question
146 What trailing edge flap angle will give best L : D ratio?
Answer
  • O Zero angle.
  • O Maximum angle.
  • O 20 degrees.
  • O 30 degrees.

Question 39

Question
147 What will be the effect of deploying triple slotted fowler flaps to maximum deflection?
Answer
  • O Wing area, camber and angle of incidence will increase but stalling angle, stalling speed and L/D ratio all decrease.
  • O L/D ratio, wing area, camber, stalling angle, stalling speed and angle of incidence will all increase.
  • O L/D ratio, wing area, camber, stalling angle, stalling speed and angle of incidence will all decrease.
  • O L/D ratio, wing area, camber and stalling angle will increase but stalling speed and angle of incidence will decrease.

Question 40

Question
148 Complete the following statement. As trailing edge flaps move from fully retracted to fully deployed, both lift and drag increase. Most of the additional drag is produced during the .............of deployment whilst most of the additional lift is produced during the..................The additional drag produced by the first half of the deployment is mainly.............................Whilst that produced during the second half is mainly................................. 1. First half 2. Induced 3. Profile 4. Second half
Answer
  • O 4, 1, 2, 3.
  • O 4, 2, 1, 3.
  • O 3, 1, 2, 4.
  • O 1, 4, 3, 2.

Question 41

Question
149 Deployment of trailing edge flaps in straight and level flight wil will……………………………………………………….induced drag?
Answer
  • O Increase.
  • O Not affect.
  • O Decrease.
  • O Increase or decrease depending on flap angle selected.

Question 42

Question
150 Which of the following will reduce L/D ratio most?
Answer
  • O 45° trailing edge flap.
  • O 15° trailing edge flap.
  • O 30° trailing edge flap.
  • O 15° slat.

Question 43

Question
151 A split flap is………………………………….compared to a plain flap?
Answer
  • O More efficient.
  • O Less efficient
  • O As efficient.
  • O More or less efficient depending on weight.

Question 44

Question
152 Deployment of flaps in turbulence will……………………………….?
Answer
  • O Decrease stalling speed and increase risk of exceeding limiting load factor.
  • O Increase stalling speed and risk of exceeding limiting load factor.,
  • O Decrease stalling speed and risk of exceeding limiting load factor.
  • O Increase stalling speed and decrease risk of exceeding limiting load factor.

Question 45

Question
153 Deployment of leading edge slats………………………………………...?
Answer
  • O Energises boundary layer and moves C of P forward.
  • O De-energises boundary layer and moves C of P aft.
  • O De-energises boundary layer and moves C of P forward,
  • O Energises boundary layer and moves C of P aft.

Question 46

Question
154 Deployment of flaps……………………………………………...CL?
Answer
  • O Increases.
  • O Decreases.
  • O Increases then decreases.
  • O Decreases then increases.

Question 47

Question
155 The first few degrees of flap deployment will………………………………………...L/D ratio?
Answer
  • O Increase.
  • O Decrease.
  • O Increase or decrease depending on speed.
  • O Not affect.

Question 48

Question
156 Deployment of trailing edge flaps………………………..stalling angle and…………………………………………..CLMAX?
Answer
  • O Decreases, Increases.
  • O Increases, Increase.
  • O Increases, Decreases.
  • O Decreases, Decreases.

Question 49

Question
157 Deployment of flaps in icing conditions might…………………..?
Answer
  • O Cause stalling.
  • O Increase stalling angle.
  • O Spin.
  • O Increase rate of climb.

Question 50

Question
158 Raising slats too soon after take-off might………………………..?
Answer
  • O Cause stalling.
  • O Increase stalling angle.
  • O Structural failure.
  • O Increase rate of climb.
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