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Question 46-1 : For a remotely piloted aircraft, altitude is given by the following instruments.1 barometer.2 satellite positioning.3 ultrasonic sensor.4 infrared sensor..the combination regrouping all the correct statements is ? [ Progression UAV ]

1, 2.

Ultrasonic sensor and infrared sensor give an information of height, not altitude. exemple 46 1, 2.

Question 46-2 : The altitude hold system mainly uses.1 a satellite positioning system. 2 an ultrasonic sensor.3 a vertical speed indicator. 4 a barometer..the combination regrouping all the correct statements is ?

2 4.

Altitude is given by the barometer and the satellite positioning system, but the altitude hold system usually uses an ultrasonic sensor coupled with the barometer to keep the altitude. exemple 50 2 - 4.

Question 46-3 : After a constraint higher than the yield strength limit, an aircraft part.1 returns to its original shape.2 has a lower resistance.3 keep its resistance characteristics.4 must be replaced.5 can be straightened..the combination regrouping all the correct statements is ?

2, 4.

If a part of your drone fairing, propeller, wing, landing skid, motor mount, etc. has exceeded its elastic limit, it loses its strength. it will take much less force to further damage or permanently deform it, and it will break much more easily than before. the proper course of action is to replace it before attempting any further flights. exemple 54 2, 4.

Question 46-4 : The elastic limit of a material ?

Should never be exceeded.

The elastic limit of a material is the critical value that the applied stress needs to exceed for the deformation to become permanent.

Question 46-5 : A propeller blade includes the following elements.1 a lower surface.2 an upper surface.3 a leading edge.4 a trailing edge.5 a rotation direction.6 a lift to drag ratio..the combination regrouping all the correct statements is ?

1, 2, 3, 4 and 5.

A propeller blade is like a wing. 121

Question 46-6 : An electrical systems is protected from overcurrent by ?

A fuse.

The purpose of a fuse is to melt if the current in the circuit rises above a certain threshold. when it melts, it cuts off the current and protects the circuit.

Question 46-7 : The direct reading magnetic compass is no more reliable when approaching.1 the magnetic poles..2 the magnetic equator with a east or west heading..3 the magnetic equator with a north or south heading...the combination that regroups all of the correct statements is ?

1.

Near the magnetic poles, the reading is inaccurate due to the presence of an excessively strong vertical component of the earth's magnetic field.

Question 46-8 : Information given by a magnetic compass is impaired by ?

A ferrous metal mass.

The reading of a magnetic compass will be affected by the presence of a ferrous metal object. the ferrous metal generates a magnetic field that attracts the compass needle, thereby producing an incorrect reading known as compass variation. exemple 74 A ferrous metal mass.

Question 46-9 : The fields affecting a magnetic compass originate from.1 magnetic masses.2 ferrous metal masses.3 non ferrous metal masses.4 electrical currents..the combination regrouping all the correct statements is ?

1 2 4.

A magnetic compass is a magnet, so it will be affected by magnetic objects, ferrous materials, and electric currents that generate electromagnetism. exemple 78 1 - 2 - 4.

Question 46-10 : Magnetic variation can be best described as..... ?

The angle between the true meridian and magnetic meridian.

More informations here https //www.geomag.nrcan.gc.ca/mag fld/magdec en.php exemple 82 The angle between the true meridian and magnetic meridian.

Question 46-11 : From the statements below, choose the one that represents a risk of compass error for a small remotely piloted aircraft. ?

The line of faith of the compass is aligned with the transverse axis of the remotely piloted aircraft.

The line of faith of the compass must be aligned with the longitudinal axis of the drone. exemple 86 The line of faith of the compass is aligned with the transverse axis of the remotely piloted aircraft.

Question 46-12 : The purpose of a compass swing is to attempt to coincide the indications of ?

Compass north and magnetic north.

exemple 90 Compass north and magnetic north.

Question 46-13 : Your magnetic compass requires ?

A regular calibration procedure.

exemple 94 A regular calibration procedure.

Question 46-14 : To calibrate the magnetic compass of your remotely piloted aircraft ?

It is recommended to move away from all magnetic or ferrous sources.

exemple 98 It is recommended to move away from all magnetic or ferrous sources.

Question 46-15 : Without taking account of the instrumental error, a compass shows the ?

Magnetic north.

A compass aligns itself with the earth's magnetic field and therefore points to magnetic north. exemple 102 Magnetic north.


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