NCATT AET & AEIT ENDORSEMENT EXAM PRACTICE
QUESTIONS COMPLETE WITH 100% VERIFIED ANSWERS
1. What part of an atom is associated with the flow of electricity?
A) Protons
B) Neutrons
C) Electrons
D) Nucleus
Correct Answer: C
Rationale: Electrons are the negatively charged subatomic particles that
orbit the nucleus of an atom. The flow of electrons through a conductor
constitutes an electric current.
2. What is the unit of measurement for capacitance?
A) Henry
B) Farad
C) Ohm
D) Siemens
Correct Answer: B
Rationale: Capacitance is measured in farads (F). Inductance is
measured in henrys (H), resistance in ohms (Ω), and conductance in
siemens (S).
,3. What is the total capacitance of a circuit containing three capacitors
in parallel with capacitances of 0.02 µF, 0.05 µF, and 0.10 µF?
A) 0.17 µF
B) 0.07 µF
C) 1.7 µF
D) 17 µF
Correct Answer: A
Rationale: In a parallel circuit, total capacitance is the sum of individual
capacitances: 0.02 + 0.05 + 0.10 = 0.17 microfarads.
4. What is the unit of measurement for inductance?
A) Farad
B) Henry
C) Ohm
D) Coulomb
Correct Answer: B
Rationale: Inductance is measured in henrys (H). Capacitance is
measured in farads, resistance in ohms, and electric charge in
coulombs.
5. A resistance of 5 ohms is connected to a resistance of 10 ohms in
series. What is the total resistance?
A) 3.33 ohms
B) 5 ohms
,C) 10 ohms
D) 15 ohms
Correct Answer: D
Rationale: In a series circuit, total resistance is the sum of individual
resistances: 5 + 10 = 15 ohms.
6. A resistance of 5 ohms is connected to a resistance of 10 ohms in
parallel. What is the total resistance?
A) 3.33 ohms
B) 5 ohms
C) 10 ohms
D) 15 ohms
Correct Answer: A
Rationale: In a parallel circuit, total resistance is calculated as 1/Rt = 1/5
+ 1/10 = 0.2 + 0.1 = 0.3, so Rt = 3.33 ohms.
7. What is the RMS voltage of a sine wave if the peak-to-peak voltage
is 200V?
A) 50V
B) 70.7V
C) 100V
D) 141.4V
Correct Answer: B
, Rationale: RMS voltage = Peak voltage / √2. Peak voltage = Peak-to-peak
/ 2 = 100V. .414 = 70.7V.
8. What type of output waveform is produced by an astable
multivibrator?
A) Sine wave
B) Sawtooth wave
C) Square wave or rectangular wave
D) Triangular wave
Correct Answer: C
Rationale: An astable multivibrator is a free-running oscillator that
produces a square wave or rectangular wave output.
9. What is Electromagnetic Interference (EMI)?
A) Interference caused by physical damage to wires
B) Caused when electromagnetic fields (radio waves) induce high-
frequency voltages in a wire or component
C) Interference from nearby power lines only
D) Static electricity buildup on aircraft surfaces
Correct Answer: B
Rationale: EMI occurs when electromagnetic fields (radio waves) induce
high-frequency voltages in a wire or component, as referenced in AC
43.13-1B Chapter 11. This can cause unwanted signals and noise in
electronic equipment.
QUESTIONS COMPLETE WITH 100% VERIFIED ANSWERS
1. What part of an atom is associated with the flow of electricity?
A) Protons
B) Neutrons
C) Electrons
D) Nucleus
Correct Answer: C
Rationale: Electrons are the negatively charged subatomic particles that
orbit the nucleus of an atom. The flow of electrons through a conductor
constitutes an electric current.
2. What is the unit of measurement for capacitance?
A) Henry
B) Farad
C) Ohm
D) Siemens
Correct Answer: B
Rationale: Capacitance is measured in farads (F). Inductance is
measured in henrys (H), resistance in ohms (Ω), and conductance in
siemens (S).
,3. What is the total capacitance of a circuit containing three capacitors
in parallel with capacitances of 0.02 µF, 0.05 µF, and 0.10 µF?
A) 0.17 µF
B) 0.07 µF
C) 1.7 µF
D) 17 µF
Correct Answer: A
Rationale: In a parallel circuit, total capacitance is the sum of individual
capacitances: 0.02 + 0.05 + 0.10 = 0.17 microfarads.
4. What is the unit of measurement for inductance?
A) Farad
B) Henry
C) Ohm
D) Coulomb
Correct Answer: B
Rationale: Inductance is measured in henrys (H). Capacitance is
measured in farads, resistance in ohms, and electric charge in
coulombs.
5. A resistance of 5 ohms is connected to a resistance of 10 ohms in
series. What is the total resistance?
A) 3.33 ohms
B) 5 ohms
,C) 10 ohms
D) 15 ohms
Correct Answer: D
Rationale: In a series circuit, total resistance is the sum of individual
resistances: 5 + 10 = 15 ohms.
6. A resistance of 5 ohms is connected to a resistance of 10 ohms in
parallel. What is the total resistance?
A) 3.33 ohms
B) 5 ohms
C) 10 ohms
D) 15 ohms
Correct Answer: A
Rationale: In a parallel circuit, total resistance is calculated as 1/Rt = 1/5
+ 1/10 = 0.2 + 0.1 = 0.3, so Rt = 3.33 ohms.
7. What is the RMS voltage of a sine wave if the peak-to-peak voltage
is 200V?
A) 50V
B) 70.7V
C) 100V
D) 141.4V
Correct Answer: B
, Rationale: RMS voltage = Peak voltage / √2. Peak voltage = Peak-to-peak
/ 2 = 100V. .414 = 70.7V.
8. What type of output waveform is produced by an astable
multivibrator?
A) Sine wave
B) Sawtooth wave
C) Square wave or rectangular wave
D) Triangular wave
Correct Answer: C
Rationale: An astable multivibrator is a free-running oscillator that
produces a square wave or rectangular wave output.
9. What is Electromagnetic Interference (EMI)?
A) Interference caused by physical damage to wires
B) Caused when electromagnetic fields (radio waves) induce high-
frequency voltages in a wire or component
C) Interference from nearby power lines only
D) Static electricity buildup on aircraft surfaces
Correct Answer: B
Rationale: EMI occurs when electromagnetic fields (radio waves) induce
high-frequency voltages in a wire or component, as referenced in AC
43.13-1B Chapter 11. This can cause unwanted signals and noise in
electronic equipment.
