# Avionics Fundamentals - Vor, Rmi, DME

Approved & Edited by ProProfs Editorial Team
The editorial team at ProProfs Quizzes consists of a select group of subject experts, trivia writers, and quiz masters who have authored over 10,000 quizzes taken by more than 100 million users. This team includes our in-house seasoned quiz moderators and subject matter experts. Our editorial experts, spread across the world, are rigorously trained using our comprehensive guidelines to ensure that you receive the highest quality quizzes.
| By Lambert74
L
Lambert74
Community Contributor
Quizzes Created: 2 | Total Attempts: 4,092
Questions: 15 | Attempts: 2,265

Settings

15 questions based on the FSS Web-X presentation,� Introduction to Avionic Fundamentals 4 - VOR, RMI, DME � �

• 1.

### VOR generates two signals on the carrier frequency?

• A.

True

• B.

False

A. True
Explanation
30 Hz reference signal and a 9960 Hz subcarrier.

Rate this question:

• 2.

### The Reference and Variable signals are in phase at 180deg magnetic?

• A.

True

• B.

False

B. False
Explanation
The statement is incorrect because the reference and variable signals cannot be in phase at 180 degrees magnetic. In-phase signals have a phase difference of 0 degrees, while signals with a phase difference of 180 degrees are said to be in opposite phase or out of phase.

Rate this question:

• 3.

### The VOR radials are outbound from a station?

• A.

True

• B.

False

A. True
Explanation
The radial signals of a VOR always point away from the station.

Rate this question:

• 4.

### What is the Variable Frequency of VOR?

• A.

30Hz

• B.

60Hz

• C.

1020Hz

• D.

9960Hz

A. 30Hz
Explanation
The variable amplitude modulated (AM) signal is conventionally derived from the lighthouse-like rotation of a directional antenna array 30 times per second (30Hz).

Rate this question:

• 5.

### What is the sub-carrier Reference Frequency of VOR?

• A.

1020Hz

• B.

108.5Mhz

• C.

9960Hz

C. 9960Hz
Explanation
The VOR takes a 9960 Hz carrier and frequency modulates this carrier with the REF 30 Hz signal.

Rate this question:

• 6.

### How is the Variable Frequency of VOR modulated?

• A.

Frequency Modulated

• B.

Phase Modulated

• C.

Amplitude Modulated

C. Amplitude Modulated
Explanation
30 Hz variable (VAR), which is amplitude modulated by the antenna
9960 subcarrier is frequency modulated (FM)

Rate this question:

• 7.

### RMI comapss information is referred as?

• A.

Bearing needle

• B.

Vertical gyro

• C.

Horizontal gyro

• D.

Slaved compass

D. Slaved compass
Explanation
The correct answer is "Slaved compass". In RMI (Radio Magnetic Indicator), the compass information is referred to as the slaved compass. A slaved compass is a type of compass that is electronically connected to the aircraft's navigation system. It receives signals from the navigation system and automatically adjusts its readings to compensate for any deviations caused by the aircraft's magnetic field. This ensures accurate and reliable compass information for the pilot during flight.

Rate this question:

• 8.

### The Standby compass indicates True North?

• A.

True

• B.

False

B. False
Explanation
False. The standby compass in an aircraft typically indicates Magnetic North, not True North. The difference between True North (geographic north pole) and Magnetic North (where the Earth's magnetic field points vertically down) is known as magnetic variation or declination, which must be considered for accurate navigation.

Rate this question:

• 9.

### The pointers on the RMI indicate?

• A.

• B.

Bearing

• C.

B. Bearing
Explanation
The pointers on the RMI indicate the bearing. The bearing is the direction from the aircraft to a specific point on the ground. The RMI (Radio Magnetic Indicator) is a navigation instrument that displays the aircraft's magnetic heading and the bearing to a selected navigation station. It helps the pilot determine the direction to fly in order to reach their desired destination.

Rate this question:

• 10.

### DME is usually used in conjuction with:

• A.

• B.

ILS

• C.

VOR

C. VOR
Explanation
DME (Distance Measuring Equipment) is typically used in conjunction with VOR (VHF Omnidirectional Range). VOR provides the aircraft with the direction or bearing to a ground-based station, while DME provides the distance from the aircraft to that station. By using both systems together, pilots can determine their exact position in relation to the VOR station, allowing for accurate navigation and flight planning. ADF (Automatic Direction Finder) and ILS (Instrument Landing System) are not typically used in conjunction with DME.

Rate this question:

• 11.

### DME supplies range information up to how many miles?

• A.

50 NM

• B.

125 NM

• C.

250 NM

C. 250 NM
Explanation
DME (Distance Measuring Equipment) supplies range information up to 250 NM (nautical miles). This means that the DME can provide accurate distance measurements for objects or locations that are within a radius of 250 NM from the aircraft.

Rate this question:

• 12.

### The VOR frequency range is 9510 Hz to 10410 Hz

• A.

True

• B.

False

B. False
Explanation
The VOR frequency range is between 108 to 117.95 MHz

Rate this question:

• 13.

### What is 'Slant Range'?

• A.

Same as Ground Distance

• B.

Actual line-of-sight distance to the station

• C.

Range to the horizon in NM

B. Actual line-of-sight distance to the station
Explanation
Slant Range refers to the actual line-of-sight distance to the station. It is the distance between the observer and the target, measured along the line of sight. This measurement takes into account the elevation and the angle between the observer and the target, providing an accurate distance measurement. It is different from Ground Distance, which refers to the distance measured on a flat surface, and Range to the horizon in NM, which refers to the distance to the point where the Earth's curvature obstructs the line of sight.

Rate this question:

• 14.

### What is the DME frequency range?

• A.

960-1215 Mhz

• B.

108-112 Mhz

• C.

200-1700 Mhz

A. 960-1215 Mhz
Explanation
DME transponders transmit on a channel in the 962 to 1150 MHz range and receive on a corresponding channel between 962 to 1213 MHz.

Rate this question:

• 15.

### An HSI uses what type of gyroscope?

• A.

Vertical Gyro

• B.

Horizontal Gyro

• C.

Standby Gyro

B. Horizontal Gyro
Explanation
An HSI (Horizontal Situation Indicator) uses a Horizontal Gyro. This type of gyroscope is specifically designed to measure the aircraft's roll and pitch movements, providing accurate and reliable information about the aircraft's attitude and heading. The Horizontal Gyro is an essential component of the HSI, which displays the aircraft's heading and navigation information to the pilot in a clear and intuitive manner.

Rate this question:

Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

• Current Version
• Apr 02, 2024
Quiz Edited by
ProProfs Editorial Team
• Apr 06, 2011
Quiz Created by
Lambert74

Related Topics