100+ Free BR-ANAC-AVI Practice Questions

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Key Facts: BR-ANAC-AVI Exam

Exam Body

License Category

Governing Regulation

Official Paper Format

Practice Bank Size

This bank provides 100 English-language practice questions adapted for the official ANAC Aircraft Maintenance Mechanic - Avionics Group (MMA Aviônicos) theoretical exam in Brazil.

Sample BR-ANAC-AVI Practice Questions

Try these sample questions to test your BR-ANAC-AVI exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1An aircraft DC electrical circuit has a 28 V power supply connected across a fixed load resistance of 4 Ω. What is the current flowing through the circuit?

A.5.0 A

B.7.0 A

C.14.0 A

D.112.0 A

Explanation: According to Ohm's Law (I = V / R), dividing the circuit voltage of 28 V by the resistance of 4 Ω yields a current of 7.0 A. This fundamental relationship is essential for sizing aircraft circuit breakers and conductor wire gauges.

2Three resistors with values of 12 Ω, 6 Ω, and 4 Ω are connected in parallel across an aircraft DC bus. What is the equivalent resistance of this parallel combination?

A.2.0 Ω

B.4.0 Ω

C.7.3 Ω

D.22.0 Ω

Explanation: For parallel resistors, the total reciprocal resistance is 1/Req = 1/R1 + 1/R2 + 1/R3 = 1/12 + 1/6 + 1/4 = 1/12 + 2/12 + 3/12 = 6/12 = 1/2. Inverting 1/2 gives an equivalent resistance Req of 2.0 Ω.

3A circuit contains a 10 Ω resistor connected in series with a parallel branch consisting of a 20 Ω and a 30 Ω resistor. If the total applied DC voltage is 110 V, what is the total line current?

A.2.2 A

B.5.0 A

C.8.5 A

D.11.0 A

Explanation: First calculate the parallel branch equivalent: R_p = (20 x 30) / (20 + 30) = 600 / 50 = 12 Ω. Adding the series resistor gives R_total = 10 + 12 = 22 Ω. Using Ohm's Law (I = V / R), total current I = 110 V / 22 Ω = 5.0 A.

4An aircraft landing light operates at 10 A current through a total filament and wiring resistance of 0.5 Ω. How much electrical power is dissipated by the light assembly?

A.5.0 W

B.25.0 W

C.50.0 W

D.100.0 W

Explanation: Electrical power is calculated using P = I^2 x R. Substituting 10 A and 0.5 Ω yields P = (10)^2 x 0.5 = 100 x 0.5 = 50.0 W.

5Two aircraft capacitors with values of 10 µF and 20 µF are connected in parallel. What is their total combined capacitance?

A.6.67 µF

B.15.0 µF

C.30.0 µF

D.200.0 µF

Explanation: Capacitors in parallel add directly together: C_total = C1 + C2 = 10 µF + 20 µF = 30.0 µF. This increases total surface area available for charge storage.

6An inductor with an inductance of 50 mH (0.05 H) is operating in a standard 400 Hz aircraft AC power system. What is its inductive reactance (X_L)?

A.12.57 Ω

B.125.7 Ω

C.251.3 Ω

D.1256.6 Ω

Explanation: Inductive reactance is calculated using X_L = 2 x π x f x L. Substituting f = 400 Hz and L = 0.05 H gives X_L = 2 x 3.14159 x 400 x 0.05 = 125.66 Ω (approximately 125.7 Ω).

7What is the capacitive reactance (X_C) of a 2.0 µF filter capacitor operating in an aircraft 400 Hz AC power circuit?

A.0.005 Ω

B.198.9 Ω

C.502.7 Ω

D.1256.0 Ω

Explanation: Capacitive reactance is calculated using X_C = 1 / (2 x π x f x C). Substituting f = 400 Hz and C = 2.0 x 10^-6 F yields X_C = 1 / (2 x π x 400 x 2.0 x 10^-6) = 1 / 0.0050265 = 198.9 Ω.

8An aircraft AC series RLC circuit has a resistance of 30 Ω, an inductive reactance of 80 Ω, and a capacitive reactance of 40 Ω. What is the total impedance (Z) of the circuit?

A.50.0 Ω

B.70.0 Ω

C.110.0 Ω

D.150.0 Ω

Explanation: Total impedance is Z = sqrt(R^2 + (X_L - X_C)^2). The net reactance is X_L - X_C = 80 - 40 = 40 Ω. Then Z = sqrt(30^2 + 40^2) = sqrt(900 + 1600) = sqrt(2500) = 50.0 Ω.

9An aircraft step-down transformer has 1,000 turns on its primary winding and 200 turns on its secondary winding. If 115 V AC is applied to the primary winding, what is the output voltage on the secondary winding?

A.23.0 V AC

B.57.5 V AC

C.230.0 V AC

D.575.0 V AC

Explanation: The transformer voltage ratio equals the turns ratio: V_sec / V_pri = N_sec / N_pri. Thus V_sec = 115 V x (200 / 1000) = 115 V x 0.2 = 23.0 V AC.

10When testing a fully charged lead-acid aircraft battery with a hydrometer at 20 °C, what is the expected specific gravity reading of the electrolyte?

A.1.000 to 1.050

B.1.100 to 1.150

C.1.275 to 1.300

D.1.400 to 1.450

Explanation: A fully charged lead-acid aircraft battery electrolyte typically exhibits a specific gravity between 1.275 and 1.300 at standard temperature. As the battery discharges, sulfuric acid is consumed and the specific gravity drops toward 1.150.

About the BR-ANAC-AVI Exam

Prepare for the ANAC Aircraft Maintenance Mechanic - Avionics Group (MMA Aviônicos) theoretical exam with 100 free practice questions covering electrical systems, ARINC 429 databuses, weather radar, navigation equipment, flight instruments, and RBAC 65 regulations. English-language MCQ study adaptation of the official Portuguese ANAC theoretical exam.

Questions

60 scored questions

Time Limit

90 minutes (30 minutes per paper; shared across papers)

Passing Score

70% per subject paper

Exam Fee

TFAC R$ 200 (duration band 30 min–2h30) (National Civil Aviation Agency of Brazil (ANAC))

BR-ANAC-AVI Exam Content Outline

25%

Core Regulations and Air Law

RBAC regulations, airspace rules, and aeronautical standards.

25%

Technical Knowledge and Systems

Aircraft systems, flight mechanics, and operational technical principles.

25%

Aviation Meteorology and Weather

METAR/TAF decoding, atmospheric stability, and weather hazards.

25%

Flight Operations and Navigation

Operational planning, flight safety, and navigation principles.

How to Pass the BR-ANAC-AVI Exam

What You Need to Know

Passing score: 70% per subject paper
Exam length: 60 questions
Time limit: 90 minutes (30 minutes per paper; shared across papers)
Exam fee: TFAC R$ 200 (duration band 30 min–2h30)

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

Frequently Asked Questions

What is covered on the ANAC BR-ANAC-AVI exam?

The exam tests aeronautical regulations, technical knowledge, flight safety, and operational procedures for BR-ANAC-AVI.

What is the passing score for the ANAC BR-ANAC-AVI exam?

Candidates must achieve a minimum score of 70% on each subject paper.