Exam Revision

Question 1

The VOR operates on the principal of
1 frequency modulation
2 amplitude modulation
3 phase differential
4 frequency modulation

Answer 1

3 phase differential

Question 2

Aircraft bonding refers to
1 the relationship between airplanes and pilots
2 preventing static electricity build up in the airplane
3 ensuring an even electrical potential between different parts on the airframe
4 advanced composite glues used in the airframe

Answer 2

3 ensuring an even electrical potential between different parts on the airframe

Question 3

At ranges greater than line of sight the type of radio wave propagation on which the adf/ndb system relies to provide accurate information is
1 the direct wave
2 the sky wave
3 the ground wave
4 the combination of ground and sky wave

Answer 3

3 the ground wave

Question 4

The ADF sense antenna
1 resolves the 180 degree ambiguity
2 fine tunes the NBD frequency
3 identifies the maximum signal position
4 identifies the null position

Answer 4

1 resolves the 180 degree ambiguity

Question 5

At ranges UP TO LINE OF SIGHT the propagation on which the ADF/NDB system relies to provide accurate information is
1 the direct wave
2 the sky wave
3 the ground wave
4 a combo of ground and sky

Answer 5

1 the direct wave

Question 6

The ADP loop antenna
1 resolves the 180 degree ambiguity
2 fine tunes the NDB frequency
3 identifies the maximum signal position
4 identifies the null position

Answer 6

4 identifies the null position

Question 7

HF radio waves primarily propagate by
1 ground waves
2 diffracting ground waves
3 direct waves
4 single and multi hop sky waves

Answer 7

4 single and multi hop sky waves

Question 8

Aircraft weather radar suffers from attenuation. The term means
1mixing of ground clutter with radar returns
2 weakening of the radar transmissions and returns
3 unwanted returns from side lobes
4 distortion of the beam and side length

Answer 8

2 weakening of the radar transmissions and returns

Question 9

The worst error in a gyro stabilised magnetic compass is
1 deviation
2 transport error
3 turning and acceleration
4 earth rate wander

Answer 9

1 deviation

Question 10

When using a weather radar the most turbulent areas are identified by
1 the centre of the avoid area
2 the closest contours nearest the avoid zone
3 the position where the contours are at the greatest spacing
4 the outer edge of the avoid area

Answer 10

2 the closest contours nearest the avoid zone

Question 11

If you are heading south over Australia and suddenly decelerate your compass will initially
1 turn East
2 turn West
3 will remain steady
4 oscillate then return to original heading

Answer 11

3 will remain steady

Question 12

Vertical axis gyroscope at the south pole
1 drift and topple due to earth rotation will be at maximum value
2 drift and topple due to earth rotation will be zero
3 drift will be zero and topple will be maximum
4 drift will be maximum and topple will be zero

Answer 12

2 drift and topple due to earth rotation will be zero

Question 13

Horizontal axis gyroscope at the south pole
1 drift and topple due to earth rotation will be at maximum value
2 drift and topple due to earth rotation will be zero
3 drift will be zero and topple will be maximum
4 drift will be maximum and topple will be zero

Answer 13

1 drift and topple due to earth rotation will be at maximum value

Question 14

For accurate altitude measurements the number of channels a GPS receiver needs is
1 1
2 2
3 3
4 4

Answer 14

4 4

Question 15

The minimum number of satellites requires to eliminate GPS receiver clock error is
1 4
2 3
3 5
4 6

Answer 15

1 4

Question 16

The most significant GPS error is caused by
1 thunderstorms
2 the ionosphere
3 solar flares
4 micro meteors

Answer 16

2 the ionosphere

Question 17

The min number of satellites for an accurate 3D fix are
1 1
2 2
3 3
4 4

Answer 17

4 4

Question 18

Use of the pseudo random code allows
1 each satellite to transmit on the same frequency
2 each satellite to transmit on the same code
3 each satellite to transmit on both AM and FM
4 each satellite to transmit in turn

Answer 18

1 each satellite to transmit on the same frequency

Question 19

The GPS pseudo random code allows for
1 geosynchronous satellite orbits
2 powerful transmissions
3 military messages to be transmitted secretly
4 low power operation

Answer 19

4 low power operation