Question 1

What is the frequency range of the VOR system?

Accepted Answer

108.1 MHz to 117.95 MHz

Answer

88.1 MHz to 108.1 MHz

Answer

117.95 MHz to 128.1 MHz

Answer

100 MHz to 200 MHz

Question 2

Why is VOR navigation restricted to line of sight?

Accepted Answer

VHF signals cannot bend around obstacles.

Answer

VOR signals are affected by weather conditions.

Answer

VOR signals are weak.

Answer

VOR stations are located at high altitudes.

Question 3

What is the maximum range of deviation indicated by the course deviation needle?

Accepted Answer

±10°

Answer

±20°

Answer

±5°

Answer

±15°

Question 4

Does the deflection of the course deviation needle depend on the aircraft heading?

Accepted Answer

No, it depends on the selected radial.

Answer

Yes, it depends on the heading.

Answer

No, it depends on the altitude.

Answer

Yes, it depends on the wind direction.

Question 5

What does the TO/FROM indicator signify?

Accepted Answer

Whether the aircraft is on the same or reciprocal side of the VOR station.

Answer

The aircraft's speed relative to the VOR station.

Answer

The aircraft's heading.

Answer

The aircraft's altitude.

Question 6

How can you calculate the maximum range of a VHF facility using altitude?

Accepted Answer

Range (nm) = $$1.25×altitude (feet)$$

Answer

Range (nm) = $$2×altitude (feet)$$

Answer

Range (nm) = $$1.5×altitude (feet)$$

Answer

Range (nm) = $$1×altitude (feet)$$

Question 7

What formula is used to calculate the time to a VOR station?

Accepted Answer

Time to VOR (minutes) = Time (seconds) / Number of radials crossed

Answer

Time to VOR (minutes) = Ground speed (knots) / Time (seconds)

Answer

Time to VOR (minutes) = Time (seconds) / Ground speed (knots)

Answer

Time to VOR (minutes) = Distance (nm) / Ground speed (knots)

Question 8

What happens if a VOR station goes out of calibration?

Accepted Answer

The station's identification signal is removed.

Answer

The station increases its signal strength.

Answer

The station transmits incorrect radials.

Answer

The station stops transmitting signals.

Question 9

In which frequency band does DME operate?

Accepted Answer

UHF

Answer

VHF

Answer

HF

Answer

LF

Question 10

What is the difference between slant range and horizontal distance measured by DME?

Accepted Answer

Slant range measures direct distance, while horizontal distance measures ground distance.

Answer

Slant range measures altitude, while horizontal distance measures ground speed.

Answer

Slant range measures heading, while horizontal distance measures altitude.

Answer

Slant range measures time, while horizontal distance measures speed.

Question 11

When is the error between slant range and horizontal distance greatest?

Accepted Answer

When the aircraft is high and close to the station.

Answer

When the aircraft is low and far from the station.

Answer

When the aircraft is high and far from the station.

Answer

When the aircraft is low and close to the station.

Question 12

How does GPS calculate the distance from a satellite to the receiver?

Accepted Answer

By measuring the time it takes for the signal to travel.

Answer

By measuring the altitude of the satellite.

Answer

By measuring the speed of the aircraft.

Answer

By measuring the signal strength.

Question 13

What are the four unknowns that GPS must resolve for a 3-D position fix?

Accepted Answer

Latitude, Longitude, Altitude, and Time

Answer

Latitude, Longitude, Heading, and Time

Answer

Latitude, Longitude, Altitude, and Speed

Answer

Latitude, Longitude, Speed, and Heading

Question 14

How does the GPS CDI differ from the VOR CDI?

Accepted Answer

GPS CDI shows actual distance deviation, while VOR CDI shows angular deviation.

Answer

GPS CDI shows speed deviation, while VOR CDI shows time deviation.

Answer

GPS CDI shows heading deviation, while VOR CDI shows altitude deviation.

Answer

GPS CDI shows angular deviation, while VOR CDI shows distance deviation.

Question 15

What is RAIM, and how many satellites are required for it to function?

Accepted Answer

RAIM is a signal integrity monitoring system requiring 5 satellites.

Answer

RAIM is a backup navigation system requiring 4 satellites.

Answer

RAIM is a ground-based navigation system requiring 3 satellites.

Answer

RAIM is a signal correction system requiring 6 satellites.

Question 16

How does WAAS improve GPS accuracy, and what is its precision?

Accepted Answer

WAAS improves accuracy to within 2 meters.

Answer

WAAS improves accuracy to within 5 meters.

Answer

WAAS improves accuracy to within 1 meter.

Answer

WAAS improves accuracy to within 10 meters.