OGRAD 03.01 - VOR - Pilotexam.in

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Q1. The antenna polar diagram of a conventional VOR:

Is like a figure of 8

Is always directed towards the aircraft

Is a pencil beam

Rotates at 30 revolutions per second

Q2. In order to plot a bearing from a VOR station, a pilot needs to know the magnetic variation:

at the aircraft location

at both the VOR and aircraft

at the VOR

at the half-way point between the aircraft and the station

at the VOR

Q3. An aircraft at 6400 FT will be able to receive a VOR groundstation at 100 FT above MSL at an approximate maximum range of:

120 NM

100 NM

90 NM

110 NM

Q4. If the reference phase differs 30° with the variable phase the radial from the VOR station will be:

030°

150°

330°

210°

030°

Q5. An aircraft is on radial 120 with a magnetic heading of 300° the track selector (OBS) reads: 330. The indications on the Course Deviation Indicator (CDI) are ‘fly’:

right with 'FROM' showing

left with 'FROM' showing

right with 'TO' showing

left with 'TO' showing

left with ‘TO’ showing

Q6. When a maximum range and altitude is published for a VOR:

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

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

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

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

Q7. 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:

180

212

360

208

212

Q8. When using an RMI as an indicator for the VOR receiver:

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

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

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

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

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

Q9. Given: VOR station position N61° E025°, variation 13°E; Estimated position of an aircraft N59° E025°, variation 20°E. What VOR radial is the aircraft on?

193°

167°

347°

160°

167°

Q10. An Omni-bearing selector (OBS) shows full deflection to the left when within range of a serviceable VOR. What angular deviation are you from the selected radial?

less than 10°

10° or more

2.5 or more

1.5° or more

10° or more

Q11. The reference and the variable modulation signals from a VOR:

Always have a frequency difference of 30 Hz

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

Are both pulse modulated, at 30 Hz

Are AM and FM, at 9960 Hz

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

Q12. In which frequency band do VOR transmitters operate?

EHF

VHF

SHF

UHF

VHF

Q13. The two signals transmitted by a conventional VOR ground station are 90° out of phase on magnetic:

east

north

south

west

east

Q14. When the warning flag on a VOR indicator appears, it may indicate:

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

All 3 answers are correct

That no signal is received

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

All 3 answers are correct

Q15. The information carried by a signal emitted from a VOR is:

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

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

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

The accurate timing signal and the station identifier

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

Q16. Transmissions from VOR facilities may be adversely affected by:

static interference

uneven propagation over irregular ground surfaces

night effect

quadrantal error

uneven propagation over irregular ground surfaces

Q17. The maximum theoretical range at which an aircraft at FL230 may receive signals from a VOR facility sited at mean sea level is:

151 NM

230 NM

190 NM

170 NM

190 NM

Q18. 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)

1.5

4.5

1.5

Q19. The VOR system is limited to about 1° of accuracy. One degree at 200 NM represents a width of:

3.0 NM

2.0 NM

2.5 NM

3.5 NM

Q20. OBS 123, TO/FROM showing TO, CDI is indicating 4 dots right on a 5-dot indicator. On what radial is your position?

Radial 311

Radial 295

Radial 115

Radial 131

Radial 311

Q21. A VOR is sited at position A (45°00’N 010°00’E). An aircraft is located at position B (44°00’N 010°00’E). Assuming that the magnetic variation at A is 10°W and at B is 15°W the aircraft is on VOR radial:

185°

180°

190°

195°

190°

Q22. The captain of an aircraft flying at FL100 wishes to obtain weather information at the destination airfield from the airfield’s VOR. At what maximum theoretical range will it be possible to obtain this information?

123 NM

12.3 NM

1230 km

123 km

123 NM

Q23. In order to establish what radial you are on, you could:

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

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

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

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

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

Q24. 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:

behind the aeroplane symbol with the FROM flag showing

behind the aeroplane symbol with the TO flag showing

ahead of the aeroplane symbol with the FROM flag showing

ahead of the aeroplane symbol with the TO flag showing

behind the aeroplane symbol with the FROM flag showing

Q25. 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 is:

Radial unknown, relative bearing 045°

Radial 315°, relative bearing unknown

Radial 135°, relative bearing unknown

Radial unknown, relative bearing 225°

Radial 135°, relative bearing unknown

Q26. 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:

278°

285°

255°

262°

255°

Q27. Given: Magnetic heading 280° VOR radial 090° What bearing should be selected on the omnibearing-selector in order to centralise the VOR deviation needle with a “TO” indication?

280°

270°

090°

100°

270°

Q28. An aircraft is flying on a heading of 270°(M). The VOR OBS is also set to 270° with full left deflection and a FROM flag displayed. In which sector is the aircraft from the VOR ground station?

Q29. 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?

284° with the FROM flag showing

284° with the TO flag showing

104° with the FROM flag showing

104° with the TO flag showing

284° with the TO flag showing

Q30. Given: Course Deviation Indicator (CDI) for a VOR is selected to 090° From/To indicator indicates “TO”. CDI needle is deflected halfway to the right. On what radial is the aircraft?

265

275

Q31. If VOR bearing information is used beyond the published protection range, errors could be caused by:

sky wave interference from the same transmitter

noise from precipitation static exceeding the signal strength of the transmitter

sky wave interference from distant transmitters on the same frequency

interference from other transmitters

Q32. An aircraft at FL 100 should be able to receive a VOR groundstation at 100 FT above MSL at an approximate maximum range of:

142 NM

123 NM

130 NM

135 NM

Q33. 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:

064° with the FROM flag showing

244° with the TO flag showing

064° with the TO flag showing

244° with the FROM flag showing

064° with the TO flag showing

Q34. What is the maximum theoretical range that an aircraft at FL150 can receive signals from a VOR situated 609 feet above MSL?

184 NM

156 NM

220 NM

147 NM

184 NM

Q35. If the compass providing information to the RMI suddenly gets a 20° deviation:

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

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

All 3 answers are correct

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

All 3 answers are correct

Q36. An airway 10 NM wide is to be defined by two VORs each having a resultant bearing accuracy of plus or minus 5.5°. In order to ensure accurate track guidance within the airway limits the maximum distance apart for the transmitter is approximately:

105 NM

210 NM

50 NM

165 NM

105 NM

Q37. The TO/FROM indicator of a VOR:

Tells whether you are now flying towards or from the VOR

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

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

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

Q38. The maximum theoretical range at which an aircraft at FL210 may receive signals from a VOR facility sited 340 feet above mean sea level is approximately:

245 NM

183 NM

163 NM

204 NM

Q39. The frequency range of a VOR receiver is:

108 to 111.95 MHz

108 to 117.95 MHz

108 to 135.95 MHz

118 to 135.95 MHz

108 to 117.95 MHz

Q40. The principle used in VOR bearing measurement is:

envelope matching

beat frequency discrimination

phase comparison

difference in depth of modulation

phase comparison

Q41. If an aircraft flies along a VOR radial it will follow a:

great circle track

line of constant bearing

rhumbline track

constant magnetic track

great circle track

Q42. An aircraft on a heading of 280°(M) is on a bearing of 090°(M) from a VOR. The bearing you should select on the OMNI bearing selector to centralise the VOR/ILS left/right deviation needle with a ‘TO’ indication is:

100°

270°

090°

280°

270°

Q43. Which frequency band is used by VOR transmissions?

UHF

SHF

VHF

Q44. Which of the following statements concerning the variable, or directional, signal of a conventional VOR is correct?

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

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

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

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

Q45. On an HSI (Horizontal Situation Indicator) used in combination with a VOR receiver:

The lubber line will indicate the selected radial

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

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

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

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

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Results

Q1. The antenna polar diagram of a conventional VOR:

Q2. In order to plot a bearing from a VOR station, a pilot needs to know the magnetic variation:

Q3. An aircraft at 6400 FT will be able to receive a VOR groundstation at 100 FT above MSL at an approximate maximum range of:

Q4. If the reference phase differs 30° with the variable phase the radial from the VOR station will be:

Q5. An aircraft is on radial 120 with a magnetic heading of 300° the track selector (OBS) reads: 330. The indications on the Course Deviation Indicator (CDI) are ‘fly’:

Q6. When a maximum range and altitude is published for a VOR:

Q7. 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:

Q8. When using an RMI as an indicator for the VOR receiver:

Q9. Given: VOR station position N61° E025°, variation 13°E; Estimated position of an aircraft N59° E025°, variation 20°E. What VOR radial is the aircraft on?

Q10. An Omni-bearing selector (OBS) shows full deflection to the left when within range of a serviceable VOR. What angular deviation are you from the selected radial?

Q11. The reference and the variable modulation signals from a VOR:

Q12. In which frequency band do VOR transmitters operate?

Q13. The two signals transmitted by a conventional VOR ground station are 90° out of phase on magnetic:

Q14. When the warning flag on a VOR indicator appears, it may indicate:

Q15. The information carried by a signal emitted from a VOR is:

Q16. Transmissions from VOR facilities may be adversely affected by:

Q17. The maximum theoretical range at which an aircraft at FL230 may receive signals from a VOR facility sited at mean sea level is:

Q18. 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)

Q19. The VOR system is limited to about 1° of accuracy. One degree at 200 NM represents a width of:

Q20. OBS 123, TO/FROM showing TO, CDI is indicating 4 dots right on a 5-dot indicator. On what radial is your position?

Q21. A VOR is sited at position A (45°00’N 010°00’E). An aircraft is located at position B (44°00’N 010°00’E). Assuming that the magnetic variation at A is 10°W and at B is 15°W the aircraft is on VOR radial:

Q22. The captain of an aircraft flying at FL100 wishes to obtain weather information at the destination airfield from the airfield’s VOR. At what maximum theoretical range will it be possible to obtain this information?

Q23. In order to establish what radial you are on, you could:

Q24. 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:

Q25. 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 is:

Q26. 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:

Q27. Given: Magnetic heading 280° VOR radial 090° What bearing should be selected on the omnibearing-selector in order to centralise the VOR deviation needle with a “TO” indication?

Q28. An aircraft is flying on a heading of 270°(M). The VOR OBS is also set to 270° with full left deflection and a FROM flag displayed. In which sector is the aircraft from the VOR ground station?

Q29. 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?

Q30. Given: Course Deviation Indicator (CDI) for a VOR is selected to 090° From/To indicator indicates “TO”. CDI needle is deflected halfway to the right. On what radial is the aircraft?

Q31. If VOR bearing information is used beyond the published protection range, errors could be caused by:

Q32. An aircraft at FL 100 should be able to receive a VOR groundstation at 100 FT above MSL at an approximate maximum range of:

Q33. 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:

Q34. What is the maximum theoretical range that an aircraft at FL150 can receive signals from a VOR situated 609 feet above MSL?

Q35. If the compass providing information to the RMI suddenly gets a 20° deviation:

Q36. An airway 10 NM wide is to be defined by two VORs each having a resultant bearing accuracy of plus or minus 5.5°. In order to ensure accurate track guidance within the airway limits the maximum distance apart for the transmitter is approximately:

Q37. The TO/FROM indicator of a VOR:

Q38. The maximum theoretical range at which an aircraft at FL210 may receive signals from a VOR facility sited 340 feet above mean sea level is approximately:

Q39. The frequency range of a VOR receiver is:

Q40. The principle used in VOR bearing measurement is:

Q41. If an aircraft flies along a VOR radial it will follow a:

Q42. An aircraft on a heading of 280°(M) is on a bearing of 090°(M) from a VOR. The bearing you should select on the OMNI bearing selector to centralise the VOR/ILS left/right deviation needle with a ‘TO’ indication is:

Q43. Which frequency band is used by VOR transmissions?

Q44. Which of the following statements concerning the variable, or directional, signal of a conventional VOR is correct?

Q45. On an HSI (Horizontal Situation Indicator) used in combination with a VOR receiver:

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