Exam quiz Aircraft General Knowledge - SPL - Sailplane Pilot License

Question 1

Lower-than-standard temperature may lead to...

Accepted Answer

An altitude indication which is too high

Answer

An altitude indication which is too low

Answer

A correct altitude indication as long as the altimeter subscale is set to correct for non-standard temperature

Answer

A blockage of the Pitot tube by ice, freezing the altimeter indication to its present value

Question 2

What difference in altitude is shown by an altimeter, if the reference pressure scale setting is changed from 1000 hPa to 1010 hPa?

Accepted Answer

80 m more than before

Answer

Zero

Answer

80 m less than before

Answer

Values depending on QNH

Question 3

What is the purpose of the secondary flight controls?

Accepted Answer

To improve the performance characteristics of an aircraft and relieve the pilot of excessive control forces

Answer

To improve the turn characteristics of an aircraft in the low speed regime during approach and landing

Answer

To enable the pilot to control the aircraft's movements about its three axes

Answer

To constitute a backup system for the primary flight controls

Question 4

What are the major components of an aircraft's tail?

Accepted Answer

Horizontal tail and vertical tail

Answer

Rudder and ailerons

Answer

Steering wheel and pedals

Answer

Ailerons and elevator

Question 5

Which constructional elements give the wing its profile shape?

Accepted Answer

Ribs

Answer

Planking

Answer

Tip

Answer

Spar

Question 6

The trim is used to...

Accepted Answer

Adapt the control force

Answer

Increase adverse yaw

Answer

Move the centre of gravity

Answer

Lock control elements

Question 7

A vertical speed indicator measures the difference between...

Accepted Answer

Instantaneous static pressure and previous static pressure

Answer

Total pressure and static pressure

Answer

Dynamic pressure and total pressure

Answer

Instantaneous total pressure and previous total pressure

Question 8

Water ballast increases wing load by 40%. By what percentage does the minimum speed of the glider plane increase?

Accepted Answer

18%

Answer

100%

Answer

40%

Answer

200%

Question 9

The airspeed indicator is unservicable. The airplane may only be operated...

Accepted Answer

When the airspeed indicator is fully functional again

Answer

If no maintenance organisation is around

Answer

If only airfield patterns are flown

Answer

When a GPS with speed indication is used during flight

Question 10

Which levers in a glider's cockpit are indicated by the colors red, blue and green? Levers for usage of ...

Accepted Answer

Cabin hood release, speed brakes, elevator trim

Answer

Gear, speed brakes and elevator trim tab

Answer

Speed brakes, cable release and elevator trim

Answer

Speed brakes, cabin hood lock and gear

Question 11

Airspeed indicator, altimeter and vertical speed indicator all show incorrect indications at the same time. What error can be the cause?

Accepted Answer

Blocking of static pressure lines

Answer

Leakage in compensation vessel

Answer

Blocking of pitot tube

Answer

Failure of the electrical system

Question 12

The term "inclination" is defined as...

Accepted Answer

Angle between earth's magnetic field lines and horizontal plane

Answer

Deviation induced by electrical fields

Answer

Angle between magnetic and true north

Answer

Angle between airplane's longitudinal axis and true north

Question 13

What is a cause for the dip error on the direct-reading compass?

Accepted Answer

Inclination of earth's magnetic field lines

Answer

Acceleration of the airplane

Answer

Temperature variations

Answer

Deviation in the cockpit

Question 14

During a right turn, the yaw string is drawn to the left from center position. By what rudder input can the string be centered again?

Accepted Answer

Less bank, more rudder in turn direction

Answer

Less bank, less rudder in turn direction

Answer

More bank, less rudder in turn direction

Answer

More bank, more rudder in turn direction

Question 15

An aircraft in the northern hemisphere intends to turn on the shortest way from a heading of 360° to a heading of 270°. At approximately which indication of the magnetic compass should the turn be terminated?

Accepted Answer

270°

Answer

360°

Answer

240°

Answer

300°

Question 16

Which of the following options states the working principle of a vertical speed indicator?

Accepted Answer

Measuring the present static air pressure and comparing it to the static air pressure inside a reservoir

Answer

Measuring the vertical acceleration through the displacement of a gimbal-mounted mass

Answer

Total air pressure is measured and compared to static pressure

Answer

Static air pressure is measured and compared against a vacuum

Question 17

When trimming an aircraft nose up, in which direction does the trim tab move?

Accepted Answer

It moves down

Answer

In direction of rudder deflection

Answer

It moves up

Answer

Depends on CG position

Question 18

A vertical speed indicator connected to a too big equalizing tank results in...

Accepted Answer

Indication too high

Answer

Mechanical overload

Answer

No indication

Answer

Indication too low

Question 19

With decreasing air density the airflow speed increases at stall speed (TAS) and vice versa. How has a final approach to be conducted on a hot summer day?

Accepted Answer

With unchanged speed indication (IAS)

Answer

With increased speed indication (IAS)

Answer

With decreased speed indication (IAS)

Answer

With additional speed according POH

Question 20

What is necessary for the determination of speed (IAS) by the airspeed indicator?

Accepted Answer

The difference between the total pressure and the static pressure

Answer

The difference between the total pressure and the dynamic pressure

Answer

The difference between the dynamic pressure and the static pressure

Answer

The difference between the standard pressure and the total pressure

Question 21

Which pressure is sensed by the Pitot tube?

Accepted Answer

Total air pressure

Answer

Dynamic air pressure

Answer

Cabin air pressure

Answer

Static air pressure

Question 22

Which of the mentioned cockpit instruments is connected to the pitot tube?

Accepted Answer

Airspeed indicator

Answer

Direct-reading compass

Answer

Altimeter

Answer

Vertical speed indicator

Question 23

About how many axes does an aircraft move and how are these axes called?

Accepted Answer

3; vertical axis, lateral axis, longitudinal axis

Answer

4; vertical axis, lateral axis, longitudinal axis, axis of speed

Answer

3; x-axis, y-axis, z-axis

Answer

4; optical axis, imaginary axis, sagged axis, axis of evil

Question 24

An aircraft in the northern hemisphere intends to turn on the shortest way from a heading of 030° to a heading of 180°. At approximately which indicated magnetic heading should the turn be terminated?

Accepted Answer

210°

Answer

150°

Answer

180°

Answer

360°

Question 25

What engines are commonly used with Touring Motor Gliders (TMG)?

Accepted Answer

4-cylinder 4-stroke

Answer

2 plate Wankel

Answer

2 Cylinder Diesel

Answer

4 Cylinder 2 stroke

Question 26

The load factor "n" describes the relationship between...

Accepted Answer

Lift and weight

Answer

Weight and thrust

Answer

Drag and lift

Answer

Thrust and drag

Question 27

How is referred to a tubular steel construction with a non self-supporting skin?

Accepted Answer

Grid construction

Answer

Honeycomb structure

Answer

Monocoque construction

Answer

Semi-monocoque construction

Question 28

During a flight in colder-than-ISA air the indicated altitude is...

Accepted Answer

Higher than the true altitude

Answer

Equal to the true altitude

Answer

Equal to the standard altitude

Answer

Lower than the true altitude

Question 29

What kind of defect results in loss of airworthiness of an airplane?

Accepted Answer

Damage to load-bearing parts

Answer

Dirty wing leading edge

Answer

Crack in the cabin hood plastic

Answer

Scratch on the outer painting

Question 30

The measurement of altitude is based on the change of the...

Accepted Answer

Static pressure

Answer

Dynamic pressure

Answer

Total pressure

Answer

Differential pressure

Question 31

An aircraft in the northern hemisphere intends to turn on the shortest way from a heading of 270° to a heading of 360°. At approximately which indication of the magnetic compass should the turn be terminated?

Accepted Answer

330°

Answer

270°

Answer

030°

Answer

360°

Question 32

A movement around the longitudinal axis is primarily initiated by the...

Accepted Answer

Ailerons

Answer

Elevator

Answer

Trim tab

Answer

Rudder

Question 33

What are the primary and the secondary effects of a rudder input to the left?

Accepted Answer

Primary: yaw to the left Secondary: roll to the left

Answer

Primary: yaw to the right Secondary: roll to the left

Answer

Primary: yaw to the right Secondary: roll to the right

Answer

Primary: yaw to the left Secondary: roll to the right

Question 34

A glider's trim lever is used to...

Accepted Answer

Reduce stick force on the elevator

Answer

Reduce stick force on the ailerons

Answer

Reduce stick force on the rudder

Answer

Reduce the adverse yaw

Question 35

Which are the advantages of sandwich structures?

Accepted Answer

Low weight, high stiffness, high stability, and high strength

Answer

High temperature durability and low weight

Answer

High strength and good formability

Answer

Good formability and high temperature durability

Question 36

Which of the following options states all primary flight controls of an aircraft?

Accepted Answer

Elevator, rudder, aileron

Answer

Flaps, slats, speedbrakes

Answer

Elevator, rudder, aileron, trim tabs, high-lift wing devices, power controls

Answer

All movable parts on the aircraft which aid in controlling the aircraft

Question 37

An energy-compensated vertical speed indicator (VSI) shows during stationary glide the vertical speed...

Accepted Answer

Of the airmass flown through

Answer

Of the glider through surrounding air

Answer

Of the glider plus movement of the air

Answer

Of the glider minus movement of the air

Question 38

The fuselage structure may be damaged by...

Accepted Answer

Exceeding the manoeuvring speed in heavy gusts

Answer

Airspeed decreasing below a certain value

Answer

Neutralizing stick forces according to actual flight state

Answer

Stall after exceeding the maximum angle of attack

Question 39

QFE is the...

Accepted Answer

Barometric pressure at a reference datum, typically the runway threshold of an airfield

Answer

Altitude above the reference pressure level 1013.25 hPa

Answer

Magnetic bearing to a station

Answer

Barometric pressure adjusted to sea level, using the international standard atmosphere (ISA)

Question 40

An aircraft cruises on a heading of 180° with a true airspeed of 100 kt. The wind comes from 180° with 30 kt. Neglecting instrument and position errors, which will be the approximate reading of the airspeed indicator?

Accepted Answer

100 kt

Answer

130 kt

Answer

30 kt

Answer

70 kt

Question 41

The sandwich structure consists of two...

Accepted Answer

Thin layers and a light core material

Answer

Thick layers and a light core material

Answer

Thick layers and a heavy core material

Answer

Thin layers and a heavy core material

Question 42

The Caution Area is marked on an airspeed indicator by what color?

Accepted Answer

Yellow

Answer

Red

Answer

Green

Answer

White

Question 43

During a left turn, the yaw string is drawn to the left from center position. By what rudder input can the string be centered again?

Accepted Answer

More bank, less rudder in turn direction

Answer

Less bank, more rudder in turn direction

Answer

Less bank, less rudder in turn direction

Answer

More bank, more rudder in turn direction

Question 44

What is referred to as torsion-stiffed leading edge?

Accepted Answer

Both-side planked leading edge (from edge to cross-beam) to support torsion forces

Answer

The part of the main cross-beam to support torsion forces

Answer

Special shape of the leading edge

Answer

The point where the torsion moment on a wing begins to decrease

Question 45

In which way may an altimeter subscale which is set to an incorrect QNH lead to an incorrect altimeter reading?

Accepted Answer

If the subscale is set to a higher than actual pressure, the indication is too high. This may lead to much closer proximity to the ground than intended

Answer

If the subscale is set to a lower than actual pressure, the indication is too low. This may lead to much closer proximity to the ground than intended

Answer

If the subscale is set to a higher than actual pressure, the indication is too low. This may lead to much greater heights above the ground than intended

Answer

If the subscale is set to a lower than actual pressure, the indication is too high. This may lead to much closer proximity to the ground than intended

Question 46

What values are usually marked with a red line on instrument displays?

Accepted Answer

Operational limits

Answer

Caution areas

Answer

Operational areas

Answer

Recommended areas

Question 47

Which of the following states the working principle of an airspeed indicator?

Accepted Answer

Total air pressure is measured and compared against static air pressure

Answer

Dynamic air pressure is measured by the Pitot tube and converted into a speed indication by the airspeed indicator

Answer

Total air pressure is measured by the static ports and converted into a speed indication by the airspeed indicator

Answer

Static air pressure is measured and compared against a vacuum

Question 48

How are the flight controls on a small single-engine piston aircraft normally controlled and actuated?

Accepted Answer

Manually through rods and control cables

Answer

Hydraulically through hydraulic pumps and actuators

Answer

Electrically through fly-by-wire

Answer

Power-assisted through hydraulic pumps or electric motors

Question 49

The thickness of the wing is defined as the distance between the lower and the upper side of the wing at the...

Accepted Answer

Thickest part of the wing

Answer

Thinnest part of the wing

Answer

Most inner part of the wing

Answer

Most outer part of the wing

Question 50

What is the meaning of the red range on the airspeed indicator?

Accepted Answer

Speed which must not be exceeded regardless of circumstances

Answer

Speed which must not be exceeded within bumpy air

Answer

Speed which must not be exceeded with flaps extended

Answer

Speed which must not be exceeded in turns with more than 45° bank

Question 51

What is the purpose of winglets?

Accepted Answer

Reduction of induced drag

Answer

To increase efficiency of aspect ratio

Answer

Increase gliding performance at high speed

Answer

Increase of lift and turning manoeuvring capabilities

Question 52

Which of the stated materials shows the highest strength?

Accepted Answer

Carbon fiber reinforced plastic

Answer

Magnesium

Answer

Aluminium

Answer

Wood

Question 53

The indication of a magnetic compass deviates from magnetic north direction due to what errors?

Accepted Answer

Deviation, turning and acceleration errors

Answer

Inclination and declination of the earth's magnetic field

Answer

Gravity and magnetism

Answer

Variation, turning and acceleration errors

Question 54

The maximum load according to the load sheet has been exceeded. What action has to be taken?

Accepted Answer

Reduce load

Answer

Increase speed by 15%

Answer

Trim "pitch-down"

Answer

Trim "pitch-up"

Question 55

Which instrument can be affected by the hysteresis error?

Accepted Answer

Altimeter

Answer

Direct reading compass

Answer

Tachometer

Answer

Vertical speed indicator

Question 56

A true altitude is...

Accepted Answer

An altitude above mean sea level corrected for non-standard temperature

Answer

A height above ground level corrected for non-standard temperature

Answer

A height above ground level corrected for non-standard pressure

Answer

A pressure altitude corrected for non-standard temperature

Question 57

Which cockpit instruments are connected to the static port?

Accepted Answer

Altimeter, vertical speed indicator, airspeed indicator

Answer

Airspeed indicator, direct-reading compass, slip indicator

Answer

Airspeed indicator, altimeter, direct-reading compass

Answer

Altimeter, slip indicator, navigational computer

Question 58

The compass error caused by the aircraft's magnetic field is called...

Accepted Answer

Deviation

Answer

Inclination

Answer

Variation

Answer

Declination

Question 59

When is it necessary to adjust the pressure in the reference scale of an altimeter?

Accepted Answer

Before every flight and during cross country flights

Answer

After maintenance has been finished

Answer

Every day before the first flight

Answer

Once a month before flight operation

Question 60

The mass loaded on the plane is lower than the minimum load required by the load sheet. What action has to be taken?

Accepted Answer

Load ballast weight up to minimum load

Answer

Trim aircraft to "pitch down"

Answer

Change pilot seat position

Answer

Change incident angle of elevator

Question 61

Which is the purpose of the altimeter subscale?

Accepted Answer

To reference the altimeter reading to a predetermined level such as mean sea level, aerodrome level or pressure level 1013.25 hPa

Answer

To correct the altimeter reading for system errors

Answer

To set the reference level for the altitude decoder of the transponder

Answer

To adjust the altimeter reading for non-standard temperature

Question 62

The altimeter's reference scale is set to airfield pressure (QFE). What indication is shown during the flight?

Accepted Answer

Height above airfield

Answer

Altitude above MSL

Answer

Airfield elevation

Answer

Pressure altitude

Question 63

The Pitot / static system is required to...

Accepted Answer

Measure total and static air pressure

Answer

Prevent potential static buildup on the aircraft

Answer

Prevent icing of the Pitot tube

Answer

Correct the reading of the airspeed indicator to zero when the aircraft is static on the ground

Question 64

What does the dynamic pressure depend directly on?

Accepted Answer

Air density and airflow speed squared

Answer

Lift- and drag coefficient

Answer

Air density and lift coefficient

Answer

Air pressure and air temperature

Exam simulation Aircraft General Knowledge SPL - Sailplane Pilot License

Exam simulation SPL Aircraft General Knowledge 120 questions on 120 minutes