once again, the degrees symbol has come out as a '1'...... more Q's to follow.......
SECTION 2 - 061 02 - MAGNETISM AND COMPASSES
1 A Magnetic Compass is most effective at:
a. The Equator
b. The South Magnetic Pole
c. The North Magnetic Pole
d. A position roughly half way between the magnetic poles 1 min (1)
2 The value of magnetic variation:
a. Must be 01 at the Magnetic Equator
b. Has a maximum of 1801
c. Varies between a maximum of 451 East and 451 West
d. Cannot exceed 901 1 min (1)
3 The lines on a chart joining places of equal magnetic dip are called:
a. Aclinic lines
b. Isogonals
c. Isoclinals
d. Agonic lines 1 min (1)
4 An aircraft is accelerating on a westerly heading in the Northern Hemisphere; the effect on a Direct Reading Compass will result in:
a. An apparent turn to the West
b. An indication of a turn to the North
c. A decrease in the indicated reading
d. An indication of a turn to the South 1 min (1)
5 When should a DRC be 'swung'?
a. Every 6 months
b. Following a change of magnetic latitude
c. For night use
d. After flying in an area where lightning is visible 1 min (1)
6 The annunciator circuit of a remote indicating compass system is used when:
a. Setting the correct reading of the heading pointer
b. Compensating for deviation
c. Setting local variation
d. Synchronising the magnetic and gyro compass elements 1 min (1)
7 Given: True track 3481; drift 171 left; variation 321W; deviation 41E
What is the compass heading?
a. 3591
b. 0071
c. 3371
d. 0331 1 min (1)
8 Concerning a Direct Reading Compass in the Northern Hemisphere, it can be said:
a. On an easterly heading, a lateral acceleration produces an apparent turn to the South
b. On an easterly heading, a longitudinal acceleration produces an apparent turn to the North
c. On a westerly heading, a lateral acceleration produces an apparent turn to the North
d. On a westerly heading, a longitudinal acceleration produces an apparent turn to the South 1 min (1)
9 Permanent magnetism in an aircraft arises mainly from:
a. Exposure to the Earth's Magnetic Field during normal operation
b. The effect of electrical currents flowing in wiring
c. Hammering and the effect of the Earth's Magnetic Field whilst under construction
d. The effect of electro-magnetic fields produced by electrical equipment 1 min (1)
10 The main advantage of a Remote Indicating Compass over a Direct Reading Compass is:
a. Less moving parts
b. It magnifies the Earth's Magnetic Field in order to attain greater accuracy
c. Less Maintenance
d. It senses rather than seeks the local Magnetic Meridian 1 min (1)
11 The sensitivity of a Direct Reading Compass is:
a. Inversely proportional to the vertical and horizontal components of the Earth's Magnetic Field
b. Inversely proportional to the vertical component of the Earth's Magnetic Field
c. Proportional to the horizontal component of the Earth's Magnetic Field
d. Inversely proportional to the horizontal component of the Earth's Magnetic Field 1 min (1)
12 An aircraft, in the Northern Hemisphere, turns right from 330(C) in a Rate 1 Turn for 30secs. As the aircraft rolls out, does the compass overread or underread and will liquid swirl increase or decrease the error?
Compass Liquid Swirl
a. Underread Decrease
b. Underread Increase
c. Overread Decrease
d. Overread Increase 2 min (2)
13 Variation is:
a. The angle between the direction indicated by a compass and Magnetic North
b. The angle between True North and Compass North
c. The angle between Magnetic North and True North
d. The angle between Magnetic Heading and Magnetic North 1 min (1)
14 At the Magnetic Equator:
a. The Angle of Dip is zero
b. Variation is zero
c. Deviation is zero
d. The isogonal is an agonic line 1 min (1)
15 Concerning the Earth's Magnetic Field:
a. It may be temporary, transient or permanent
b. The Angle of Dip is the angle between the vertical and the total magnetic field
c. It acts as though there is a large 'blue' magnetic pole in Northern Canada
d. It has no effect on aircraft deviation 1 min (1)
16 An aircraft is accelerating on a westerly heading in the Northern Hemisphere. The effect on a Direct Reading Magnetic Comapss is:
Compass Apparent Turn Towards
a. Underreads North
b. Underreads South
c. Overreads North
d. Overreads South 2 min (2)
17 An aircraft, in the Northern Hemisphere, turns right from 135(C) in a Rate 1 Turn for 30secs. As the aircraft rolls out, the Direct Reading Magnetic Compass indicates a heading:
a. Less than 225(C)
b. Equal to 225(C)
c. Greater than 225(C)
d. Not possible to determine 2 min (2)
18 The agonic line:
a. Is midway between the North Magnetic Pole and the South Magnetic Pole
b. Follows the geographic Equator
c. Is the shorter distance between the respective True and Magnetic, North and South Poles
d. Follows two separate paths out of the North Magnetic Pole: one currently running through Western Europe; the other through the USA 1 min (1)
JAR REVISION QUESTIONS
SECTION 2 - 061 02 - MAGNETISM AND COMPASSES
Answers:
1 d
2 b
3 c
4 b
5 b
6 d
7 d
8 b
9 c
10 d
11 c
12 b
13 c
14 a
15 c
16 c
17 c
18 d