DGCA Radio Navigation Question Bank: 446 Free Questions

446 DGCA CPL Radio Navigation practice questions with the correct answer marked and an explanation where one has been written. Free, no sign-up needed. Radio waves and propagation, ADF/NDB, VOR, ILS, DME, radar, SSR and satellite navigation systems.

Study Radio Navigation chaptersTimed Navigation mock paper

The real DGCA Navigation paper

100 questions in 3 hours. Pass mark 70%, assessed per paper, with no negative marking. Radio Navigation is one of the three subjects pooled into the single DGCA Navigation paper, together with Air Navigation and Instrumentation.

Rehearse it under the clock in the free DGCA mock test, or read the full exam pattern guide.

Radio Navigation questions by chapter

Each link opens that chapter's own question set, with the number of questions in it.

Want the theory first? Every chapter also has notes on the Radio Navigation subject page, and you can search all questions in the full question bank.

Sample Radio Navigation questions

A few questions from the bank, with the answer and explanation under each.

1. A radio wave is:

  1. an energy wave comprising an electrical field in the same plane as a magnetic field
  2. an electrical field alternating with a magnetic field
  3. an energy wave where there is an electrical field perpendicular to a magnetic field
  4. an energy field with an electrical component
Show answer

Correct answer: C. an energy wave where there is an electrical field perpendicular to a magnetic field

A radio wave is electromagnetic radiation comprising two components: an E (electrical) field and an H (magnetic) field . These two fields are always perpendicular to each other , and both are perpendicular to the direction of propagation. See Section 3 — EM Radiation . — This question tests the very definition of EM radiation. Many students confuse "alternating with" (sequential) vs "perpendicular to" (simultaneous at 90°). Remember: BOTH fields exist at the same moment, at right angles — that is what makes EM radiation self-sustaining through space.

2. The minimum angle at which a false glide path is likely to be encountered on a 3° glide path is:

  1. 6 degrees
  2. 5.35 degrees
  3. normal glide slope times 1.75
  4. normal glide slope times 0.70
Show answer

Correct answer: A. 6 degrees

First false GP ≈ twice the true GP angle = 2 × 3° = 6° . False GPs always occur above the true glide slope.

3. NAVSTAR/GPS operates in the ___ band; receiver determines position by ___:

  1. UHF, range position lines
  2. UHF, secondary radar principles
  3. SHF, secondary radar principles
  4. SHF, range position lines
Show answer

Correct answer: A. UHF, range position lines

GPS L1 (1575 MHz) and L2 (1227 MHz) are in the UHF band (300 MHz–3 GHz). Position determined by pseudo-range position lines (spheres of position from each SV).

4. Pulse width 2 µs. Minimum range:

  1. 150 m
  2. 300 m
  3. 600 m
  4. 900 m
Show answer

Correct answer: B. 300 m

— 2×150 = 300 m .

5. AWR tilt positive (+) means:

  1. Beam below horizontal
  2. Beam above horizontal
  3. No tilt
  4. Gain increased
Show answer

Correct answer: B. Beam above horizontal

— Positive tilt = beam above horizontal .

Quick answers

How many Radio Navigation questions are in the Ghost Aviator question bank?

The Radio Navigation bank currently holds 446 questions. Each has one marked correct answer, and an explanation where one has been written. They are split across 19 chapter question pages so you can practise one topic at a time.

Is the Radio Navigation question bank free?

Yes. The questions, answers and explanations are free to read and practise, and you do not need to sign up. Signing in only adds saved progress and attempt history on your dashboard.

What is the DGCA Navigation paper format?

The DGCA Navigation paper is 100 questions in 3 hours, passed at 70%, with no negative marking. Radio Navigation is one of the three subjects pooled into the single DGCA Navigation paper, together with Air Navigation and Instrumentation.

How do you know the answers are correct?

Every answer is checked against an authoritative reference, such as a standard ATPL textbook, an ICAO Annex or the relevant DGCA regulation, before it is published. Anything that cannot be verified is flagged or removed rather than guessed.

How answers are verified · All DGCA exam questions

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