INST-SB-MODULE4

INST-SB-MODULE4

1. One of the errors inherent in a ring laser gyroscope occurs at low input rotation rates tending towards zero when a phenomenon known as 'lock-in' is experienced. What is the name of the technique, effected by means of a piezo-electric motor, that is used

a) dither
b) zero drop
c) beam lock
d) cavity rotation

2. A radio altimeter can be defined as a:

a) self-contained on-board aid used to measure the true height of the aircraft
b) ground radio aid used to measure the true height of the aircraft
c) self-contained on-board aid used to measure the true altitude of the aircraft
d) ground radio aid used to measure the true altitude of the aircraft

3. The Ground Proximity Warning System (GPWS) generates the following sound signal or signals when the aircraft is sinking after a take-off or a go-around:

a) WHOOP WHOOP PULL UP repetitive only
b) DON'T SINK repetitive only
c) DON'T SINK always followed by WHOOP WHOOP PULL UP
d) DON'T SINK followed by WHOOP WHOOP PULL UP if the sink rate overshoots a second level

4. A ground proximity warning system (GPWS), when mandatory installed on board an aircraft, must in all cases generate:

a) a visual alarm to which a sound alarm can be
b) a sound alarm or a visual alarm
c) a sound and visual alarm
d) at least one sound alarm to which a visual alarm can be added

5. An aircraft is descending from FL 390 to ground level at maximum speed. The limits in speed will be:

a) the VMO only.
b) initially the VMO, then the MMO below a certain flight level.
c) the MMO only.
d) initially the MMO, then the VMO below a certain flight level.

6. During the approach, a crew reads on the radio altimeter the value of 650 ft. This is an indication of the true:

a) altitude of the aircraft.
b) height of the aircraft with regard to the runway.
c) height of the aircraft with regard to the ground at any time.
d) height of the lowest wheels with regard to the ground at any time.

7. In case of accidental closing of an aircraft's left static pressure port (rain, birds), the altimeter:

a) keeps on providing reliable reading in all situations
b) overreads the altitude in case of a side-slip to the right and displays the correct information during symmetric flight.
c) overreads the altitude in case of a sideslip to the left and displays the correct information during symmetric flight.
d) underreads the altitude.

8. In the building principle of a gyroscope, the best efficiency is obtained through the concentration of the mass:

a) on the periphery and with a low rotation speed.
b) on the periphery and with a high rotation speed.
c) close to the axis and with a low rotation speed.
d) close to the axis and with a high rotation speed.

9. The Ground Proximity Warning System (GPWS) is a system working according to a height span ranging from:

a) 50 ft to 2 500 ft
b) 30 ft to 5 000 ft
c) the ground to 1 000 ft
d) the ground to 500 ft

10. On a modern aircraft, the flight director modes are displayed on the:

a) upper strip of the ND (Navigation Display).
b) upper strip of the PFD (Primary Flight Display).
c) control panel of the flight director only.
d) upper strip of the ECAM (Electronic Centralized A/C Management).

11. In order to know in which mode the auto-throttles are engaged, the crew will check the:

a) ND (Navigation Display).
b) PFD (Primary Flight Display)
c) throttles position.
d) TCC (Thrust Control Computer).

12. The flight director provides information for the pilot:

a) to join a desired track with a 45° intercept angle.
b) to join to a desired path with the optimum attitude.
c) to join a desired track with a constant bank angle of 25°.
d) to remain within the flight envelope.

13. The QNH is by definition the value of the:

a) altimeter setting so that the altimeter, on the apron of the aerodrome for which it is given, reads the elevation.
b) atmospheric pressure at the sea level of the location for which it is given.
c) atmospheric pressure at the level of the ground overflown by the aircraft.
d) altimeter setting so that the altimeter, on the apron of the aerodrome for which it is given, reads zero.

14. To be as accurate as possible, an anemometer must be calibrated according to the following formula:

a) Bernoulli, taking into account the air compressibility.
b) Saint-Venant, taking into account the air compressibility.
c) Bernoulli, considering the air as an uncompressible fluid.
d) Saint-Venant, considering the air as an uncompressible fluid.

15. Sound propagates through the air at a speed which only depends on:

a) pressure.
b) temperature and the pressure.
c) density.
d) temperature.

16. The velocity of sound at the sea level in a standard atmosphere is:

a) 644 kt.
b) 332 kt.
c) 661 kt.
d) 1059 kt.

17. Given: Pt: total pressure Ps: static pressure Pd: dynamic pressure The altimeter is fed by:

a) Ps-Pt.
b) Pt-Pd.
c) Pd-Ps.
d) Pd.

18. In a standard atmosphere and at the sea level, the calibrated airspeed (CAS) is:

a) higher than the true airspeed (TAS).
b) equal to the true airspeed (TAS).
c) lower than the true airspeed (TAS).
d) independent of the true airspeed (TAS).

19. The total pressure probe (pitot tube) is mounted at a distance from the aeroplane skin such that:

a) it is located outside the boundary layer.
b) it is easily accessible during maintenance checks.
c) it does not disturb the aerodynamic flow around the aircraft.
d) it is protected from icing.

20. Below the tropopause, when descending at constant CAS:

a) Mach number increases and the velocity of sound decreases.
b) Mach number decreases and the velocity of sound increases.
c) Mach number and the velocity of sound decrease.
d) Mach number and the velocity of sound increase.

21. When the intruding aircraft is equipped with a transponder without altitude reporting capability, the TCAS (Traffic Collision Avoidance System) issues a:

a) "traffic advisory" and horizontal "resolution advisory".
b) "traffic advisory" and vertical "resolution advisory".
c) "traffic advisory", vertical and horizontal "resolution advisory".
d) "traffic advisory" only.

22. When the intruding aircraft is equipped with a serviceable mode C transponder, the TCAS 2 (Traffic Collision Avoidance System) generates a:

a) "traffic advisory" and horizontal "resolution advisory".
b) "traffic advisory" and vertical "resolution advisory".
c) "traffic advisory", vertical and horizontal "resolution advisory".
d) vertical "traffic advisory" and an horizontal "resolution advisory".

23. On a TCAS2 (Traffic Collision Avoidance System), a corrective "resolution advisory" (RA) is a "resolution advisory":

a) asking the pilot to modify the heading of his aircraft.
b) which does not require any action from the pilot but on the contrary asks him not to modify his current vertical speed rate.
c) asking the pilot to modify the speed of his aircraft.
d) asking the pilot to modify effectively the vertical speed of his aircraft.

24. On a TCAS 2 (Traffic Collision Avoidance System) the preventive "resolution advisory" (RA) is a "resolution advisory":

a) that advises the pilot to avoid certain deviations from the current vertical rate but does not require any change to be made to that rate.
b) asking the pilot to modify the heading of his aircraft.
c) asking the pilot to modify effectively the vertical speed of his aircraft.
d) asking the pilot to modify the speed of his aircraft.

25. On the display of a TCAS 2 (Traffic alert and Collision Avoidance System), a traffic advisory (TA) is represented by:

a) an amber solid circle.
b) a red full square.
c) a white or cyan empty lozenge.
d) a white or cyan solid lozenge.

26. On the display of a TCAS 2 (Traffic alert and Collision Avoidance System), a resolution advisory (RA) is represented by:

a) a red full square.
b) an amber solid circle.
c) a white or cyan empty lozenge.
d) a white or cyan solid lozenge.

27. On the display of a TCAS II (Traffic alert and Collision Avoidance System), a proximate traffic is represented by:

a) an amber solid circle.
b) a white or cyan solid lozenge.
c) a red full square.
d) a white or cyan empty lozenge.

28. The float type fuel gauges provide information on:

a) mass whose indication is independent of the temperature of the fuel.
b) mass whose indication varies with the temperature of the fuel.
c) volume whose indication is independent of the temperature of the fuel.
d) volume whose indication varies with the temperature of the fuel.

29. The sensors used to measure the exhaust gas temperature on an aircraft equipped with turbojets are:

a) thermocouples.
b) based on metallic conductors whose resistance increases linearly with temperature.
c) based on metallic parts whose expansion/contraction is measured.
d) capacitors whose capacity varies proportionally with temperature.

30. The measurement of the turbine temperature or of the EGT (Exhaust Gas Temperature) is carried out at the:

a) high pressure chamber intake.
b) combustion chamber intake.
c) combustion chamber outlet.
d) high pressure turbine outlet.

31. The flight director indicates the:

a) path permitting reaching a selected radial in minimum time.
b) optimum path at the moment it is entered to reach a selected radial.
c) path permitting reaching a selected radial over a minimum distance.
d) optimum instantaneous path to reach selected radial.

32. During an automatic landing, between 50 FT AGL and touch down, the autopilot maintains:

a) a vertical speed according to the GPS height.
b) a vertical speed according to the radio altimeter height.
c) a constant flight path angle with reference to the ground.
d) a constant vertical speed.

33. The automatic trim is a component of the autopilot pitch channel. Its function is to:

a) set the attitude to an instantaneous value before engaging the autopilot.
b) reset the attitude, after engaging (the autopilot).
c) automatically disengage the autopilot in the case of an excessive pitch up.
d) transfer a stabilized aeroplane to the pilot during autopilot disengagement.

34. Magnetic compass errors are:

a) parallax errors due to compass rose oscillations.
b) due to Schuler oscillations.
c) due to the lateral gusts which occur when the airplane is heading eastward or westward.
d) about north change, depending on the bank angle and magnetic heading.

35. The elements which take part in the local vertical alignment of an inertial strap-down unit are:

a) the flow inductors.
b) the accelerometers.
c) the gyroscopes.
d) the accelerometers and gyroscopes.

36. The range of a low altitude radio altimeter is:

a) 500 ft.
b) greater than 10 000 ft.
c) 10000 ft.
d) 2500 ft.

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