FCC RADAR ENDORSEMENT EXAM QUESTIONS
AND CORRECT ASWERS (VERIFIED ANSWERS) Q&A
2027 |INSTAN T DOWNLOAD PDF
1. What is the primary purpose of marine radar?
A. To measure water salinity
B. To determine vessel position and detect objects
C. To transmit voice communications
D. To measure engine temperature
Rationale: Marine radar detects targets and provides
information about their range and bearing for navigation and
collision avoidance.
Correct answer: B. To determine vessel position and detect
objects
2. What basic principle does radar use to detect a target?
A. Magnetic induction
B. Sound absorption
C. Reflection of electromagnetic waves
D. Infrared radiation
Rationale: Radar transmits electromagnetic energy and detects
echoes reflected from objects.
Correct answer: C. Reflection of electromagnetic waves
3. What does RADAR stand for?
,A. Radio Detection and Ranging
B. Radio Direction and Reception
C. Radiotelephone Detection and Radioing
D. Range Detection and Radio
Rationale: RADAR is an acronym for Radio Detection and
Ranging.
Correct answer: A. Radio Detection and Ranging
4. Which component normally generates the high-power
microwave pulse in a traditional marine radar?
A. Magnetron
B. Modulator
C. Antenna motor
D. Display tube
Rationale: A magnetron is commonly used as the microwave
power oscillator in conventional pulse radar systems.
Correct answer: A. Magnetron
5. What is the function of the radar antenna?
A. Store electrical energy
B. Transmit and receive electromagnetic energy
C. Convert AC to DC only
D. Display target information
Rationale: The antenna radiates transmitted energy and
collects reflected radar echoes.
Correct answer: B. Transmit and receive electromagnetic energy
,6. What determines a target's range in pulse radar?
A. Echo amplitude only
B. Time between transmission and reception of the echo
C. Antenna height only
D. Receiver temperature
Rationale: Range is calculated from the elapsed time between
transmitting the pulse and receiving its echo.
Correct answer: B. Time between transmission and reception of
the echo
7. Why is the factor of two important when calculating radar
range?
A. The antenna rotates twice
B. The pulse travels to the target and back
C. Two receivers are always used
D. Two frequencies are transmitted
Rationale: The measured propagation time represents the
round trip, so the distance is half the total path length.
Correct answer: B. The pulse travels to the target and back
8. What unit is commonly used to express marine radar
range?
A. Nautical mile
B. Ampere
C. Hertz
D. Ohm
, Rationale: Nautical miles are commonly used for marine
navigation and radar range scales.
Correct answer: A. Nautical mile
9. What primarily determines radar bearing information?
A. Antenna pointing direction
B. Receiver voltage
C. Pulse width alone
D. Magnetron temperature
Rationale: The antenna's azimuth direction when an echo is
received establishes the target's bearing.
Correct answer: A. Antenna pointing direction
10. What is azimuth?
A. Vertical distance
B. Horizontal angular direction
C. Target height
D. Signal strength
Rationale: Azimuth describes angular direction in the horizontal
plane.
Correct answer: B. Horizontal angular direction
11. What is the purpose of a radar display?
A. To visually present radar information
B. To increase transmitter voltage
C. To cool the magnetron
D. To rotate the antenna
AND CORRECT ASWERS (VERIFIED ANSWERS) Q&A
2027 |INSTAN T DOWNLOAD PDF
1. What is the primary purpose of marine radar?
A. To measure water salinity
B. To determine vessel position and detect objects
C. To transmit voice communications
D. To measure engine temperature
Rationale: Marine radar detects targets and provides
information about their range and bearing for navigation and
collision avoidance.
Correct answer: B. To determine vessel position and detect
objects
2. What basic principle does radar use to detect a target?
A. Magnetic induction
B. Sound absorption
C. Reflection of electromagnetic waves
D. Infrared radiation
Rationale: Radar transmits electromagnetic energy and detects
echoes reflected from objects.
Correct answer: C. Reflection of electromagnetic waves
3. What does RADAR stand for?
,A. Radio Detection and Ranging
B. Radio Direction and Reception
C. Radiotelephone Detection and Radioing
D. Range Detection and Radio
Rationale: RADAR is an acronym for Radio Detection and
Ranging.
Correct answer: A. Radio Detection and Ranging
4. Which component normally generates the high-power
microwave pulse in a traditional marine radar?
A. Magnetron
B. Modulator
C. Antenna motor
D. Display tube
Rationale: A magnetron is commonly used as the microwave
power oscillator in conventional pulse radar systems.
Correct answer: A. Magnetron
5. What is the function of the radar antenna?
A. Store electrical energy
B. Transmit and receive electromagnetic energy
C. Convert AC to DC only
D. Display target information
Rationale: The antenna radiates transmitted energy and
collects reflected radar echoes.
Correct answer: B. Transmit and receive electromagnetic energy
,6. What determines a target's range in pulse radar?
A. Echo amplitude only
B. Time between transmission and reception of the echo
C. Antenna height only
D. Receiver temperature
Rationale: Range is calculated from the elapsed time between
transmitting the pulse and receiving its echo.
Correct answer: B. Time between transmission and reception of
the echo
7. Why is the factor of two important when calculating radar
range?
A. The antenna rotates twice
B. The pulse travels to the target and back
C. Two receivers are always used
D. Two frequencies are transmitted
Rationale: The measured propagation time represents the
round trip, so the distance is half the total path length.
Correct answer: B. The pulse travels to the target and back
8. What unit is commonly used to express marine radar
range?
A. Nautical mile
B. Ampere
C. Hertz
D. Ohm
, Rationale: Nautical miles are commonly used for marine
navigation and radar range scales.
Correct answer: A. Nautical mile
9. What primarily determines radar bearing information?
A. Antenna pointing direction
B. Receiver voltage
C. Pulse width alone
D. Magnetron temperature
Rationale: The antenna's azimuth direction when an echo is
received establishes the target's bearing.
Correct answer: A. Antenna pointing direction
10. What is azimuth?
A. Vertical distance
B. Horizontal angular direction
C. Target height
D. Signal strength
Rationale: Azimuth describes angular direction in the horizontal
plane.
Correct answer: B. Horizontal angular direction
11. What is the purpose of a radar display?
A. To visually present radar information
B. To increase transmitter voltage
C. To cool the magnetron
D. To rotate the antenna
