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Question 61-1 : In the northern hemisphere during deceleration following a landing in a southerly direction a direct reading magnetic compass indicates ? [ Formation assignment ]

No apparent turn

Acceleration/deceleration errors are false compass indications of a swing to the north or south during speed changes of the airplane this error is most pronounced when flying on a heading of east or west and decreases when flying closer to a north or south heading in a direct north or south heading this error does not occur .in the northern hemisphere the compass swings towards the north during acceleration and towards the south during deceleration in the southern hemisphere this error occurs the other way round when the speed stabilises the error disappears .learn this for northern hemisphere ands . a cceleration gives apparent turn to n orth . d eceleration gives apparent turn to s outh exemple 161 No apparent turn.

Question 61-2 : During deceleration following a landing in a westerly direction a magnetic compass made for the northern hemisphere indicates ?

An apparent turn to the south

Acceleration/deceleration errors are false compass indications of a swing to the north or south during speed changes of the airplane this error is most pronounced when flying on a heading of east or west and decreases when flying closer to a north or south heading in a direct north or south heading this error does not occur .in the northern hemisphere the compass swings towards the north during acceleration and towards the south during deceleration in the southern hemisphere this error occurs the other way round when the speed stabilises the error disappears .learn this for northern hemisphere ands . a cceleration gives apparent turn to n orth . d eceleration gives apparent turn to s outh exemple 165 An apparent turn to the south.

Question 61-3 : During deceleration following a landing in a westerly direction a magnetic compass made for the southern hemisphere indicates ?

An apparent turn to the north

.acceleration/deceleration errors are false compass indications of a swing to the north or south during speed changes of the airplane this error is most pronounced when flying on a heading of east or west and decreases when flying closer to a north or south heading in a direct north or south heading this error does not occur .in the northern hemisphere the compass swings towards the north during acceleration and towards the south during deceleration in the southern hemisphere this error occurs the other way round when the speed stabilises the error disappears .learn this for northern hemisphere ands . a cceleration gives apparent turn to n orth . d eceleration gives apparent turn to s outh exemple 169 An apparent turn to the north.

Question 61-4 : During deceleration following a landing in an easterly direction a magnetic compass made for the northern hemisphere indicates ?

An apparent turn to the south

.acceleration/deceleration errors are false compass indications of a swing to the north or south during speed changes of the airplane this error is most pronounced when flying on a heading of east or west and decreases when flying closer to a north or south heading in a direct north or south heading this error does not occur .in the northern hemisphere the compass swings towards the north during acceleration and towards the south during deceleration in the southern hemisphere this error occurs the other way round when the speed stabilises the error disappears .learn this for northern hemisphere ands . a cceleration gives apparent turn to n orth . d eceleration gives apparent turn to s outh exemple 173 An apparent turn to the south.

Question 61-5 : During deceleration following a landing in an easterly direction a magnetic compass made for the southern hemisphere indicates ?

An apparent turn to the north

.acceleration/deceleration errors are false compass indications of a swing to the north or south during speed changes of the airplane this error is most pronounced when flying on a heading of east or west and decreases when flying closer to a north or south heading in a direct north or south heading this error does not occur .in the northern hemisphere the compass swings towards the north during acceleration and towards the south during deceleration in the southern hemisphere this error occurs the other way round when the speed stabilises the error disappears .learn this for northern hemisphere ands . a cceleration gives apparent turn to n orth . d eceleration gives apparent turn to s outh exemple 177 An apparent turn to the north.

Question 61-6 : About a magnetic compass ?

Turning error is due to the vertical component of the earth's magnetic field


Question 61-7 : A pilot wishes to turn right on to a southerly heading with 20° bank at a latitude of 20° north using a direct reading compass in order to achieve this he must stop the turn on an approximate heading of ?

200°

Admin .in the northern hemisphere as you turn through north you must roll out early onto your required heading .if you turn through south you roll out late .use unos to remember this un = undershoot north os = overshoot south .the value you need to overshoot or undershoot does vary with latitude due to compass dip and bank angle due to acceleration .to calculate the value use this approximation formula .heading = 180° + bank angle + latitude /2.heading = 180 + 20 + 20 / 2.heading = 180° + 20° = 200° exemple 185 200°.

Question 61-8 : The turning errors of a direct reading magnetic compass are ?

Maximum at the magnetic poles

.at the magnetic equator the attraction of the compass needle towards the north and south poles is equal and the needle remains unbiased as the compass is moved either north or south of the magnetic equator the attraction to the nearest pole is increased thus the needle will be biased towards the nearest pole . 1006.this phenomenon is called magnetic dip and this compass error is amplified with the proximity to either pole

Question 61-9 : A flux valve detects the horizontal component of the earth's magnetic field .1 the flux valve is made of a pair of soft iron bars.2 the information can be used by a 'flux gate' compass or a directional gyro.3 the flux gate valve casing is dependent on the aircraft three inertial axis.4 the ?

2 4

Admin .the magnetic detector unit flux valve is fixed to the aircraft it feeds the error detector with information about the earth's magnetic field it is made of three soft iron bars this system is very accurate accuracy on the value of the magnetic field indication is less than 0 5° exemple 193 2, 4.

Question 61-10 : 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

exemple 197 1

Question 61-11 : In the northern hemisphere during a take off run in a westerly direction a direct reading magnetic compass indicates ?

An apparent turn to the north

Acceleration/deceleration errors are false compass indications of a swing to the north or south during speed changes of the airplane this error is most pronounced when flying on a heading of east or west and decreases when flying closer to a north or south heading in a direct north or south heading this error does not occur .in the northern hemisphere the compass swings towards the north during acceleration and towards the south during deceleration in the southern hemisphere this error occurs the other way round when the speed stabilises the error disappears .learn this for northern hemisphere ands . a cceleration gives apparent turn to n orth . d eceleration gives apparent turn to s outh exemple 201 An apparent turn to the north.

Question 61-12 : In the northern hemisphere during the take off run in an easterly direction a direct reading magnetic compass indicates ?

An apparent turn to the north

Acceleration/deceleration errors are false compass indications of a swing to the north or south during speed changes of the airplane this error is most pronounced when flying on a heading of east or west and decreases when flying closer to a north or south heading in a direct north or south heading this error does not occur .in the northern hemisphere the compass swings towards the north during acceleration and towards the south during deceleration in the southern hemisphere this error occurs the other way round when the speed stabilises the error disappears .learn this for northern hemisphere ands . a cceleration gives apparent turn to n orth . d eceleration gives apparent turn to s outh exemple 205 An apparent turn to the north.

Question 61-13 : Which of the following statements about hard and soft iron in relation to magnetism is correct ?

Hard iron magnetism is of a permanent nature and soft iron is of a non permanent nature

exemple 209 Hard iron magnetism is of a permanent nature and soft iron is of a non-permanent nature.

Question 61-14 : The turning error of a direct reading magnetic compass ?

Increases when the magnetic latitude increases

exemple 213 Increases when the magnetic latitude increases.

Question 61-15 : Direct reading magnetic compass errors are ?

Due to north change depending on the bank angle and magnetic heading

exemple 217 Due to north change, depending on the bank angle and magnetic heading.

Question 61-16 : The flux valve of a gyromagnetic compass .1 feeds the error detector.2 feeds the direct indicating compass.3 gives the earth's magnetic field direction.the combination regrouping all of the correct statements is ?

1 3

.the gyro magnetic compass is made up of . a magnetic detector unit flux valve which electrically senses the direction of earth's magnetic field . a gyroscope which points to a fixed point in space regardless of any manoeuvres the aircraft makes . an error detector to sense any difference between the gyro and magnetic headings and apply corrections to the gyro .the magnetic detector unit flux valve feeds the error detector with information about the earth's magnetic field exemple 221 1, 3.

Question 61-17 : A flux valve ?

Is usually located in the wing tip to avoid as much as possible magnetic disturbances of the airplane

exemple 225 Is usually located in the wing tip, to avoid as much as possible magnetic disturbances of the airplane.

Question 61-18 : An electromagnet is a type of magnet in which ?

The magnetic field is produced by the flow of an electric current

Revised ecqb03 july 2016 exemple 229 The magnetic field is produced by the flow of an electric current.

Question 61-19 : The inclination of the earth magnetic field at the magnetic equator is equal to ?

0°

Revised ecqb03 july 2016 ..at the magnetic equator the attraction of the compass needle towards the north and south poles is equal and the needle remains unbiased as the compass is moved either north or south of the magnetic equator the attraction to the nearest pole is increased thus the needle will be biased towards the nearest pole . 1006.this phenomenon is called magnetic dip and this compass error is amplified with the proximity to either pole exemple 233 0°.

Question 61-20 : The earth's north magnetic pole ?

Is located approximately in northern canada

Revised ecqb03 july 2016 ..the earth's magnetic north is located in hudson bay in canada .the location of the earth's magnetic poles periodically wanders as much as 15 km every year exemple 237 Is located approximately in northern canada.

Question 61-21 : In the northern hemisphere during acceleration in a westerly heading a direct reading magnetic compass ?

Indicates an apparent turn to the north

Feedback cqb15 may 2012..acceleration/deceleration errors are false compass indications of a swing to the north or south during speed changes of the airplane this error is most pronounced when flying on a heading of east or west and decreases when flying closer to a north or south heading in a direct north or south heading this error does not occur .in the northern hemisphere the compass swings towards the north during acceleration and towards the south during deceleration in the southern hemisphere this error occurs the other way round when the speed stabilises the error disappears .learn this for northern hemisphere ands . a cceleration gives apparent turn to n orth . d eceleration gives apparent turn to s outh

Question 61-22 : The principle of the compass swinging procedures is to ?

Determine the amount by which the compass readings are affected by hard and soft iron magnetism

Revised ecqb03 july 2016 ..the compass swinging procedures is the determination of the deviations due to aircraft's magnetic field . compass swinging determination of initial deviations . compass compensation correction of deviations found . compass calibration determination of residual deviations exemple 245 Determine the amount by which the compass readings are affected by hard and soft iron magnetism.

Question 61-23 : Which of these statements about fundamental laws of magnetism are correct or incorrect .1 like poles attract.2 unlike poles repel each other ?

1 is incorrect 2 is incorrect

Cqb15 august 2012 . warning this question is in the database n°1059 with statements 1 and 2 inverted 1 unlike poles attract / 2 like poles repel each other .. 1032.like poles of magnets repel each other north pole and north pole south pole and south pole while different poles will attract each other north pole and south pole

Question 61-24 : The force of attraction or repulsion between two magnets ?

Varies inversely as the square of the distance between them

Cqb15 august 2012 ..the law of magnets states that like poles repel unlike poles attract if the poles are concentrated at points this force between two poles is proportional to the product of their strengths and varies inversely as the square of the distance between them exemple 253 Varies inversely as the square of the distance between them.

Question 61-25 : The magnetic poles are the two positions on the earth's surface where the lines of the magnetic field ?

Are entirely vertical

Admin . 1430.the force acting on a compass needle is directly proportional to the horizontal component of the earth's field and inversely proportional to the vertical component of the earth's .at the magnetic poles the earth's magnetic field is perpendicular to the earth's surface magnetic dip is 90° at the magnetic poles a dip needle stands vertical exemple 257 Are entirely vertical.

Question 61-26 : The purpose of a magnetic compass compensation is to correct for ?

Deviations

Admin .the compass swinging procedures is the determination of the deviations due to aircraft's magnetic field . compass swinging determination of initial deviations . compass compensation correction of deviations found . compass calibration determination of residual deviations exemple 261 Deviations.

Question 61-27 : The purpose of a magnetic compass calibration is to ?

Determine the residual deviations

Ecqb03 july 2016 ..the compass swinging procedures is the determination of the deviations due to aircraft's magnetic field . compass swinging determination of initial deviations . compass compensation correction of deviations found . compass calibration determination of residual deviations exemple 265 Determine the residual deviations.

Question 61-28 : The location of the earth's magnetic poles ?

Periodically wanders as much as 15 km every year

Ecqb03 july 2016 exemple 269 Periodically wanders (as much as 15 km every year).

Question 61-29 : Which of these statements about fundamental laws of magnetism are correct or incorrect .1 unlike poles attract.2 like poles repel each other ?

1 is correct 2 is correct

Ecqb03 july 2016 . warning this question is in the database n°1025 with statements 1 and 2 inverted 1 like poles attract / 2 unlike poles repel each other .. 1032.like poles of magnets repel each other north pole and north pole south pole and south pole while different poles will attract each other north pole and south pole exemple 273 1 is correct, 2 is correct

Question 61-30 : Which of these statements about the properties of a simple bar magnet are correct or incorrect .1 north or south poles cannot exist separately.2 magnetism is concentrated at the extremities of the bar ?

1 is correct 2 is correct

Ecqb03 july 2016 . warning this question also exists at the exam with the first statement written like this north or south poles can exist separately which in this is case is incorrect exemple 277 1 is correct, 2 is correct.

Question 61-31 : The magnetic variation at any point on the earth's surface is the angle ?

Between the horizontal component of the magnetic field and true north direction

Admin .the minimum magnetic variation declination is 0° .the maximum magnetic variation declination is 180°and this will be along a line between the magnetic north pole and the geographic north pole . 1417.black arrow the true north direction .red arrow the horizontal component of the magnetic north exemple 281 Between the horizontal component of the magnetic field and true north direction.

Question 61-32 : The magnetic variation ?

Is caused by the different locations of the geographic north pole and the magnetic north pole

Admin .the minimum magnetic variation declination is 0° .the maximum magnetic variation declination is 180°and this will be along a line between the magnetic north pole and the geographic north pole . 1417.black arrow the true north direction .red arrow the horizontal component of the magnetic north exemple 285 Is caused by the different locations of the geographic north pole and the magnetic north pole.

Question 61-33 : The inclination of the earth's magnetic field at the north magnetic pole is equal to ?

90°

Admin . 1430.the force acting on a compass needle is directly proportional to the horizontal component of the earth's field and inversely proportional to the vertical component of the earth's .at the magnetic poles the earth's magnetic field is perpendicular to the earth's surface magnetic dip is 90° at the magnetic poles a dip needle stands vertical exemple 289 90°.

Question 61-34 : Because of the earth's magnetic field a compass placed anywhere on earth will turn so that the north pole of the magnet inside the compass points towards the ?

North magnetic pole

Revised ecqb04 october 2017 exemple 293 North magnetic pole.

Question 61-35 : Which of the following is an occasion for carrying out a compass swing on a direct reading compass ?

After an aircraft has passed through a severe electrical storm or has been struck by lightning

exemple 297 After an aircraft has passed through a severe electrical storm, or has been struck by lightning.

Question 61-36 : The directive force of the earth's magnetic field ?

Is greatest at the magnetic equator

.at the magnetic equator the attraction of the compass needle towards the north and south poles is equal and the needle remains unbiased as the compass is moved either north or south of the magnetic equator the attraction to the nearest pole is increased thus the needle will be biased towards the nearest pole . 1006.this phenomenon is called magnetic dip and this compass error is amplified with the proximity to either pole .directive force = horizontal component of the earth's magnetic field exemple 301 Is greatest at the magnetic equator.

Question 61-37 : The compass heading can be derived from the magnetic heading by reference to a ?

Compass swinging curve

.the magnetic heading can be derived from the true heading by means of a map showing the isogonal lines .the compass heading can be derived from the magnetic heading by reference to a compass swinging curve .for information . compass swinging determination of initial deviations . compass compensation correction of deviations found . compass calibration determination of residual deviations exemple 305 Compass swinging curve.

Question 61-38 : The indications on a directional gyroscope are subject to errors the most significant are .1 apparent wander due to earth rotation.2 apparent wander due to change of aircraft position.3 gimballing errors.4 north change.5 mechanical defects. the combination regrouping the correct statement is ?

1 2 3 5

exemple 309 1, 2, 3, 5.

Question 61-39 : Graphic at reference shows three gyro assemblies a b and c .among these gyros . one is a roll gyro noted 1 . one is a pitch gyro noted 2 . one is a yaw gyro noted 3 .the correct matching of gyros and assemblies is . 1041 ?

1b 2c 3a

exemple 313 1b, 2c, 3a.

Question 61-40 : When an aircraft has turned 360 degrees with a constant attitude and bank the pilot observes the following on a classic artificial horizon ?

Attitude and bank correct

For a classic artificial horizon air driven artificial horizon not for an electric artificial horizon since the pendulous vanes are affected by a horizontal acceleration as well as acceleration due to gravity errors in pitch and roll indications will occur during the turns the centrifugal force will act on the fore and aft pendulous vanes erection error and weighted base of the rotor housing pendulosity error .the errors are complex and change as the turn progresses cancelling out after a 360° turn the magnitude of the errors varies with speed rate of turn and type of horizon .the following errors will occur .after 90° of turn too much nose up and bank too low .after 180° of turn too much nose up and bank correct .after 270° of turn too much nose up and too much bank .after 360° of turn attitude and bank correct exemple 317 Attitude and bank correct.


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