VOR OMNI RANGE

A VOR is sited at position A (45°00'N, 010°00'E). An aircraft is located at

position B (44°00'N, 01000'E). Assuming that the magnetic variation at A is

10°W and at B is 15°W, the. aircraft is on VOR radial:

• 180*

• 185*

• 190*

• 195*

An aircraft is flying on the true track 090° towards a VOR station located near

the equator where the magnetic variation is 15°E. The variation at the aircraft

position is 8°E. The aircraft is on VOR radial:

• 255*

• 278*

• 262*

• 285*

Given:

Magnetic heading 280°

VOR radial 090°

What bearing should be selected on the omni-bearing selector in order to

centralise the VOR deviation needle with a "TO" indication?

• 100

• 280

• 270

• 090

A VOR is sited at position 58°00'N - 073°00'W where the magnetic variation

equals 32°W. An aircraft is located at position 56°00'N 073°00'W where the

magnetic variation equals 28°W. The aircraft is on VOR radial:

• 360

• 208

• 212

• 180

In order to plot a bearing from a VOR station, a pilot needs to know the

magnetic variation:

• A.at the VOR.

• B. at the aircraft location.

• C. at the half-way point between the aircraft and the station.

• D. at both the VOR and aircraft

The principle used in VOR bearing measurement is:

• A. beat frequency discrimination.

• B envelope matching.

• C) phase comparison.

• D. difference in depth of modulation.

7. Which frequency band is used by VOR transmissions?

• A. SHF

• B. UHF

• C. VHF

• D.HF

Transmissions from VOR facilities may be adversely affected by:

• A. static interference.

• B. uneven propagation over irregular ground surfaces.

• C. night effect.

• D. quadrantal error.

9. If VOR bearing information is used beyond the published protection range,

errors could be caused by:

• A. sky wave interference from the same transmitter.

• B. noise from precipitation static exceeding the signal strength of the transmitter

• C. interference from other transmitters.

• D. sky wave interference from distant transmitters on the same frequency.

10. An aircraft is 100 NM from a VOR facility. Assuming no error when using a

deviation indicator where 1 dot = 2° deviation, how many dots deviation from

the centre line of the instrument will represent the limits of the airway

boundary? (Assume that the airway is 10 NM wide)

• A. 6.0

• B. 3.0

• C. 4.5

• D. 1.5