Exam Practice Questions And Correct

Certified Avionics Technician Certification Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• Which instrument measures the aircraft’s angular velocity?
• Altimeter
• Airspeed Indicator
• Gyroscope
• Compass

Rationale: Gyroscopes measure angular velocity and are key

components in attitude indicators and directional gyros.

• What is the purpose of a transponder in an aircraft?
• Measure altitude
• Provide navigation
• Transmit aircraft identification and altitude to ATC
• Record flight data 1 / 4

Rationale: Transponders relay identification and altitude information

to air traffic control for situational awareness.

• Which component converts electrical signals into audible sound in a

cockpit?

• Amplifier
• Oscillator
• Speaker
• Antenna

Rationale: Speakers convert electrical signals into audible sound,

enabling communication and alerts.

• What is the primary function of an Automatic Direction Finder (ADF)?
• Measure altitude
• Determine aircraft bearing relative to a radio station
• Provide airspeed data
• Control autopilot

Rationale: The ADF points to the selected NDB (Non-Directional

Beacon), allowing pilots to navigate by radio bearings.

• Which type of radar is used to detect weather conditions?
• Ground radar
• Military radar
• Weather radar
• Air traffic radar 2 / 4

Rationale: Weather radar detects precipitation, turbulence, and

storm intensity, assisting in flight safety.

• What is the main advantage of a glass cockpit over traditional analog

instruments?

• Lower cost
• Easier maintenance
• Improved situational awareness
• Simpler wiring

Rationale: Glass cockpits integrate multiple flight parameters into

digital displays, enhancing situational awareness.

• In avionics, what does VHF stand for?
• Variable High Frequency
• Very High Frequency
• Very High Frequency
• Vertical High Frequency

Rationale: VHF refers to the Very High Frequency band, commonly

used for air-to-ground communication.

• Which instrument shows the aircraft’s orientation relative to the

horizon?

• Altimeter
• Heading Indicator
• Airspeed Indicator
• Attitude Indicator 3 / 4

Rationale: The attitude indicator uses gyroscopes to show pitch and

roll relative to the horizon.

• What is the function of an aircraft magnetometer?
• Measure altitude
• Determine heading using Earth’s magnetic field
• Control autopilot
• Measure airspeed

Rationale: Magnetometers measure the Earth's magnetic field to

provide heading information.

• Which of the following is an inertial navigation system

component?

• Transponder
• Accelerometer
• VOR receiver
• Weather radar

Rationale: Accelerometers in an INS measure acceleration, which is

integrated to calculate position and velocity.

• What is the standard frequency range for aviation VHF

communication?

• 118–136 MHz
• 108–118 MHz
• 118–137 MHz
• 136–156 MHz
• / 4