1
As altitude increases, the stall speed (IAS):
initially remains constant but at higher altitudes increases
remains constant regardless of altitude.
initially remains constant but at higher altitudes decreases.
remains constant until the tropopause but at higher altitudes increases
2
When a pilot makes a turn in horizontal flight, the stall speed :
increases with the load factor squared
decreases with increasing bank angle
increases with flap extension
increases with the square root of load factor
3
The stall speed in a 60° banked turn increases by the following factor:
1.30.
2.00.
1.41.
1.07.
4
The trailing edge flaps when extended :
degrade the best angle of glide
significantly increase the angle of attack for maximum lift
significantly lower the drag
increase the zero lift angle of attack
5
When trailing edge flaps are extended in level flight, the change in pitching moment, ignoring any effects on the tailplane, will be:
nose down
dependent on cg location.
zero.
nose up
6
Extension of leading edge flaps will:
decrease CLmax.
decrease drag.
increase critical angle of attack.
not affect critical angle of attack.
7
On FAR 23 airplane, the limit load factor in normal category is:
+3,2 G
4,4 G
+3,8 G
+6,0 G
8
If an aircraft is flying at a speed above VA:
The aircraft can not stall.
A full elevator deflection could cause a structural damage.
An overspeed warning will be indicated.
The airplane can destroy itself when in a bank.
9
By what percentage does VA (EAS) alter when the aeroplane's weight decreases by 19%?
10% lower
19% lower
4.36% lower.
No change.
10
Which of these statements about the gust load factor on an aeroplane are correct or incorrect? I. When the slope of the lift curve versus angle of attack curve decreases, the gust load factor decreases. II. When the wing loading decreases, the gust load factor decreases.
I is correct, II is incorrect.
I is incorrect, II is incorrect.
I is incorrect, II is correct
I is correct, II is correct
11
The twisting of a propeller blade from root to tip has been made to:
To prevent excessive stress at the blade tip at high RPM
Provide a constant angle of attack from root to tip.
To ensure its optimum thrust is always achieved at take off.
To provide its greatest thrust toward the blade root.
12
The number of blades in a propeller would be increased:
To increase the efficiency of the variable pitch mechanism
To enable a longer undercarriage to be fitted
To reduce noise.
To increase power absorption capability
13
The propeller noise can be minimised by:
Reduce the propeller area.
Decrease the angle of attack of the propeller
Reduce the RPM of the engine
Increase number of blades.
14
The four forces of lift, weight, thrust and drag in level flight act through:
The Aft limit
The Aerodynamic Centre.
The C of P.
The C of G.
15
An aircraft in flight is affected by loads. These may be classified as:
Compressive, tensile, shear and torsional.
Thrust, drag, lift and weight.
Compressive, bending, shear and torsional.
Tensile, shear, twisting and stretching
16
During the glide, the forces acting on an aircraft are:
Drag, thrust and weight.
Lift, drag and weight.
Lift, weight and thrust
Thrust, lift and drag.
17
In a steady banked turn the lift will:
Equal the weight.
Equal the centrifugal force.
Equal the centrifugal force minus the weight.
Equal the resultant of weight and centrifugal force.
18
In a level banked turn, the stalling speed will:
Increase
Remain the same
very inversely with wing loading.
Decrease
19
Total pressure is: (rho = density)
½ rho V².
static pressure minus dynamic pressure.
static pressure plus dynamic pressure.
measured at a small hole in a surface, parallel to the local stream.
20
The unit of measurement for density is:
kg/cm²
kg/m³.
bar.
psi.
21
The stall speed:
decreases with an increased weight.
increases with an increased weight.
increases with the length of the wingspan.
does not depend on weight.
22
: Which statement is correct?
Flap extension reduces the stallspeed, which increases the maximum glide distance.
Spoiler extension increases the stallspeed, the minimum rate of descent and the minimum angle of descent.
Flap extension has no effect on the minimum rate of descent as this is only affected by TAS
Flap extension reduces the maximum lift/drag ratio thus reducing the minimum rate of descent
23
Consider an aerofoil with a certain camber and a positive angle of attack. At which location will the highest flow velocities occur?
In front of the stagnation point.
In the stagnation point.
Upper side.
Lower side.
24
As the Mach number increases in straight and level flight, a shock wave on the upper surface of the wing will:
disappear
not move.
move towards the trailing edge.
move towards the leading edge.
25
Floating due to ground effect during an approach to land will occur:
when the height is less than halve of the length of the wing span above the surface.
when the height is less than twice the length of the wing span above the surface.
at a speed approaching the stall.
when a higher than normal angle of attack is used.
