ASTM NCATT Aircraft Electronics Technician
(AET) Certification Newest (2025 - 2026
Update) From Real Past Papers Questions –
A Set Of 100 Most Common Exam
Frequently Tested Questions And Answers
In Details 100% Verified Exam Highly
Recommendable For Grade A+
1. Which law states that current is directly proportional to voltage and
inversely proportional to resistance?
A. Kirchhoff's Voltage Law
B. Faraday's Law
C. Ohm's Law
D. Coulomb's Law
Answer: C. Ohm's Law
Ohm's Law (V = IR) is the foundation of electrical troubleshooting and circuit
analysis.
2. What is the SI unit of electrical resistance?
A. Volt
B. Ampere
C. Watt
D. Ohm
,Answer: D. Ohm
Resistance is measured in ohms (Ω), representing opposition to current flow.
3. Which material is commonly used as an electrical conductor?
A. Glass
B. Rubber
C. Copper
D. Plastic
Answer: C. Copper
Copper offers excellent conductivity and is widely used in aircraft wiring.
4. What instrument measures electrical voltage?
A. Ammeter
B. Ohmmeter
C. Wattmeter
D. Voltmeter
Answer: D. Voltmeter
A voltmeter is connected in parallel to measure potential difference.
5. Current is measured in:
A. Volts
B. Watts
C. Amperes
D. Ohms
Answer: C. Amperes
Electric current is measured in amperes (amps).
, 6. Power in an electrical circuit is measured in:
A. Volts
B. Ohms
C. Amperes
D. Watts
Answer: D. Watts
Electrical power equals voltage multiplied by current.
7. Which component stores electrical energy in an electric field?
A. Resistor
B. Inductor
C. Capacitor
D. Diode
Answer: C. Capacitor
Capacitors temporarily store charge and oppose changes in voltage.
8. Which component stores energy in a magnetic field?
A. Capacitor
B. Diode
C. Inductor
D. Resistor
Answer: C. Inductor
Inductors oppose changes in current by creating a magnetic field.
9. A resistor's primary function is to:
A. Amplify current
, B. Store energy
C. Generate voltage
D. Limit current flow
Answer: D. Limit current flow
Resistors control current and produce voltage drops.
10.Which circuit has only one path for current?
A. Parallel
B. Combination
C. Series
D. Mesh
Answer: C. Series
Series circuits have a single current path.
11.In a parallel circuit, voltage is:
A. Divided equally
B. Zero
C. Variable
D. Equal across each branch
Answer: D. Equal across each branch
Each parallel branch receives the source voltage.
12.In a series circuit, current is:
A. Divided
B. Highest at the source
C. Zero at the load
(AET) Certification Newest (2025 - 2026
Update) From Real Past Papers Questions –
A Set Of 100 Most Common Exam
Frequently Tested Questions And Answers
In Details 100% Verified Exam Highly
Recommendable For Grade A+
1. Which law states that current is directly proportional to voltage and
inversely proportional to resistance?
A. Kirchhoff's Voltage Law
B. Faraday's Law
C. Ohm's Law
D. Coulomb's Law
Answer: C. Ohm's Law
Ohm's Law (V = IR) is the foundation of electrical troubleshooting and circuit
analysis.
2. What is the SI unit of electrical resistance?
A. Volt
B. Ampere
C. Watt
D. Ohm
,Answer: D. Ohm
Resistance is measured in ohms (Ω), representing opposition to current flow.
3. Which material is commonly used as an electrical conductor?
A. Glass
B. Rubber
C. Copper
D. Plastic
Answer: C. Copper
Copper offers excellent conductivity and is widely used in aircraft wiring.
4. What instrument measures electrical voltage?
A. Ammeter
B. Ohmmeter
C. Wattmeter
D. Voltmeter
Answer: D. Voltmeter
A voltmeter is connected in parallel to measure potential difference.
5. Current is measured in:
A. Volts
B. Watts
C. Amperes
D. Ohms
Answer: C. Amperes
Electric current is measured in amperes (amps).
, 6. Power in an electrical circuit is measured in:
A. Volts
B. Ohms
C. Amperes
D. Watts
Answer: D. Watts
Electrical power equals voltage multiplied by current.
7. Which component stores electrical energy in an electric field?
A. Resistor
B. Inductor
C. Capacitor
D. Diode
Answer: C. Capacitor
Capacitors temporarily store charge and oppose changes in voltage.
8. Which component stores energy in a magnetic field?
A. Capacitor
B. Diode
C. Inductor
D. Resistor
Answer: C. Inductor
Inductors oppose changes in current by creating a magnetic field.
9. A resistor's primary function is to:
A. Amplify current
, B. Store energy
C. Generate voltage
D. Limit current flow
Answer: D. Limit current flow
Resistors control current and produce voltage drops.
10.Which circuit has only one path for current?
A. Parallel
B. Combination
C. Series
D. Mesh
Answer: C. Series
Series circuits have a single current path.
11.In a parallel circuit, voltage is:
A. Divided equally
B. Zero
C. Variable
D. Equal across each branch
Answer: D. Equal across each branch
Each parallel branch receives the source voltage.
12.In a series circuit, current is:
A. Divided
B. Highest at the source
C. Zero at the load
