Transmissions from VOR facilities may be adversely affected by:

B. uneven propagation over irregular ground surfaces.

9. If VOR bearing information is used beyond the published protection range, errors could be caused by:

C. interference from other transmitters.

A. sky wave interference from the same transmitter.

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

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

12. An aircraft is required to approach a VOR via the 104° radial. Which of the following settings should be made on the VOR/ILS deviation indicator?

B.284° with the TO flag showing.

A. 284° with the FROM flag showing.

C. 104° with the TO flag showing.

D. 104° with the FROM flag showing.

14. An aircraft is required to approach a VOR station via the 244° radial. In order to obtain correct sense indications the deviation indicator should be set to:

B. 064° with the TO flag showing.

A. 064° with the FROM flag showing.

C. 244° with the FROM flag showing.

D. 244° with the TO flag showing.

16. An RMI slaved to a remote indicating compass has gone unserviceable and is locked on to a reading of 090°. The tail of the VOR pointer shows 135°. The available information from the VOR i

D Radial 135°, relative bearing unknown,

A. Radial 315°, relative bearing unknown.

B. Radial unknown, relative bearing 225

C.Radial unknown, relative bearing 045°.

22. Which of the following statements concerning the variable, or directional, signal of a conventional VOR is correct?

B. The rotation of the variable signal at a rate of 30 times per second gives it the characteristics of a 30 Hz amplitude modulation.

A.The transmitter varies the amplitude of the variable signal by 30 Hz each time it rotates.

C. The transmitter changes the frequency of the variable signal by 30 Hz either side of the allocated frequency each time it rotates.

D. The receiver adds 30 Hz to the variable signal before combining it with the reference signal.

Given: Aircraft heading 160° (M), Aircraft is on radial 240° from a VOR, Selected course on HSI is 250°. The HSI indications are deviation bar:

D behind the aeroplane symbol with the FROM flag showing.

A. ahead of the aeroplane symbol with the TO flag showing.

B. behind the aeroplane symbol with the TO flag showing.

C ahead of the aeroplane symbol with the FROM flag showing

The information carried by a signal emitted from a VOR is:

D In what magnetic direction the signal left the VOR antenna, and the identification of the station.

A. The direction from the aircraft to the VOR and the identification of the VOR.

B. The accurate timing signal and the station identifier.

C. The Magnetic North reference signal and the identification signal for the correct direction to the aircraft.

The antenna polar diagram of a conventional VOR:

D Rotates at 30 revolutions per second.

A. Is always directed towards the aircraft.

The reference and the variable modulation signals from a VOR:

A. Are both at 30 Hz, one frequency modulated and the other amplitude modulated

B. Are both pulse modulated, at 30 Hz.

D. Always have a frequency difference of 30 Hz.

The TO/FROM indicator of a VOR;

B Tells whether a track equal to the selected bearing will bring you to or away from the VOR.

A Tells whether you are now flying towards or from the VOR.

C. Tells whether the deviation indicator shows that you should manoeuvre the aircraft towards or from the CDI needle.

D. Tells whether you should turn the aircraft towards or away from the CDI indication.

In order to establish what radial you are on, you could:

B. Rotate the OBS until the CDI gets centred and the TO/FROM indicator is showing FROM. Then read the radial on the OBS.

A. Read the OBS when the CDI is centred and the TO/FROM is showing TO

C. Turn the OBS to make the TO/FROM change from TO to FROM. The OBS is now indicating the radial you are on.

D. Turn the aircraft until the CDI is centred. The aircraft magnetic heading is now the reciprocal of the radial you are on.

When the warning flag on a VOR indicator appears, it may indicate :

B. That the received signal is too weak to be processed in the receiver.

C. That the quality of the received signal is so poor that a stable establishment of phase difference between the reference and the variable signal is not possible.

On an HSI (Horizontal Situation Indicator) used in combination with a VOR receiver:

A. A pictorial presentation of aircraft deviation relative to VOR radials is provided.

B.The lubber line will indicate the reciprocal value of the received radial. .

C. The lubber line will indicate the selected radial.

D. There will be no Omni Bearing Selector knob, as this function is automatic on this type of indicator.

When using an RM as an indicator for the VOR receiver:

B. You will read the number of the received radial under the tail of the VOR needle.

A. You will read the drift as the angle between the OBS bug and the tip of the VOR needle.

C. The TO/FROM indication on the MI will indicate which way to turn the aircraft in order to fly towards the VOR station being received.

D. You will read the number of the received radial under the tip of the VOR needle.

If the compass providing information to the RM suddenly gets a 20° deviation:

A. The relative bearing to the VOR, as observed on the RMI, will jump 20°

B. The number of the received radial may still be read on the compass card under the tail of the VOR needle.

C. The magnetic track to the VOR station may be read on the compass card under the tip of the VOR needle.

When a maximum range and altitude is published for a VOR:

C.The reception from this VOR is guaranteed free from harmful interference from other VORs when you are within this airspace.

A. The signal from the VOR will be too weak to provide information when you are outside this airspace.

B. The terrain will cause bends and/or scalloping on the VOR signal and make it inaccurate outside standards in the airspace outside the published airspace.

D. You are quaranteed to receive no interference to the VOR signal from other radio transmissions as long as you are within the air space published.

You are on a compass heading of 090° on the 255 radial from a VOR. You set the course 190° on your OBS. The deviation bar will show:

D. Full scale deflection left with a 'from' indication

A. Full scale deflection right with a 'from' indication

B. Full scale deflection right with a 'to' indication

C. Full scale deflection left with a 'to' indication

VOR OMNI RANGE

Authored by Mèo Thành

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MULTIPLE CHOICE QUESTION

30 sec • 5 pts

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*

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

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*

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

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

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

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

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

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

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

The principle used in VOR bearing measurement is:

A. beat frequency discrimination.

B envelope matching.

C) phase comparison.

D. difference in depth of modulation.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

7. Which frequency band is used by VOR transmissions?

A. SHF

B. UHF

C. VHF

D.HF

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VOR OMNI RANGE

A VOR is sited at position A (45°00'N, 010°00'E). An aircraft is located atposition B (44°00'N, 01000'E). Assuming that the magnetic variation at A is10°W and at B is 15°W, the. aircraft is on VOR radial:

An aircraft is flying on the true track 090° towards a VOR station located nearthe equator where the magnetic variation is 15°E. The variation at the aircraftposition is 8°E. The aircraft is on VOR radial:

Given:Magnetic heading 280°VOR radial 090°What bearing should be selected on the omni-bearing selector in order tocentralise the VOR deviation needle with a "TO" indication?

A VOR is sited at position 58°00'N - 073°00'W where the magnetic variationequals 32°W. An aircraft is located at position 56°00'N 073°00'W where themagnetic variation equals 28°W. The aircraft is on VOR radial:

In order to plot a bearing from a VOR station, a pilot needs to know themagnetic variation:

The principle used in VOR bearing measurement is:

7. Which frequency band is used by VOR transmissions?

Transmissions from VOR facilities may be adversely affected by:

9. If VOR bearing information is used beyond the published protection range,errors could be caused by:

10. An aircraft is 100 NM from a VOR facility. Assuming no error when using adeviation indicator where 1 dot = 2° deviation, how many dots deviation fromthe centre line of the instrument will represent the limits of the airwayboundary? (Assume that the airway is 10 NM wide)

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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:

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:

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?

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:

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

9. If VOR bearing information is used beyond the published protection range,
errors could be caused by:

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)