Alberta Electrician Apprenticeship
Certification Exam Actual Exam |
Complete Questions with Solution
| Pass Guaranteed - A+ Graded
Electrical Theory & Fundamentals
Q1: In a DC series circuit with three resistors (10Ω, 20Ω, and 30Ω), what is the total
resistance?
A. 5.5Ω
B. 60Ω
C. 600Ω
D. 0.05Ω
Correct Answer: B
Rationale: The best answer is B because in a series circuit, the total resistance is the
sum of all individual resistances (10 + 20 + 30 = 60Ω).
Q2: Using Ohm’s Law, if a circuit has a voltage of 120V and a resistance of 10Ω, what is
the current?
A. 12A
B. 1200A
C. 0.08A
D. 12mA
Correct Answer: A
Rationale: The best answer is A because Ohm's Law states I = E/R, so 120 divided by
10 equals 12 amps.
Q3: Which type of electrical load typically has a lagging power factor because it
consumes reactive power to create a magnetic field?
A. Incandescent lighting
B. Resistive heater
C. Induction motor
D. Synchronous condenser
Correct Answer: C
,Rationale: Induction motors and other inductive loads cause the current to lag the
voltage, resulting in a lagging power factor.
Q4: What is the effective voltage (RMS) of a single-phase AC sine wave with a peak
value of approximately 170 volts?
A. 120V
B. 240V
C. 340V
D. 85V
Correct Answer: A
Rationale: The best answer is A because RMS voltage is roughly 0.707 times the peak
voltage (170 x 0.707 = 120V).
Q5: A transformer has a primary voltage of 120V and a secondary voltage of 24V. If
there are 200 turns on the primary winding, how many turns are on the secondary?
A. 40
B. 100
C. 800
D. 24
Correct Answer: A
Rationale: This choice is correct because the turns ratio is proportional to the voltage
ratio (120/24 = 5), so 200 turns divided by 5 equals 40 turns.
Q6: What is the total power consumed by a 240V heater with a resistance of 12Ω?
A. 20W
B. 2880W
C. 4800W
D. 5.76kW
Correct Answer: C
Rationale: The best answer is C; using the power formula P = E²/R, 240 squared
(57,600) divided by 12 equals 4800 watts (4.8kW).
Q7: Three resistors of 30Ω each are connected in parallel to a 12V battery. What is the
total current drawn from the battery?
A. 1.2A
B. 0.4A
C. 3.6A
D. 0.8A
Correct Answer: A
Rationale: This choice is correct because the equivalent resistance of three 30Ω
resistors in parallel is 10Ω; I = E/R, so 12V / 10Ω = 1.2A.
, Q8: Which rule describes the behavior of magnetic fields around a current-carrying
conductor?
A. Fleming’s Left-Hand Rule
B. Kirchhoff’s Voltage Law
C. The Right-Hand Grip Rule
D. Maxwell’s Corkscrew Rule
Correct Answer: C
Rationale: The best answer is C because the Right-Hand Grip Rule is a mnemonic used
to determine the direction of the magnetic field generated by a current flow.
Q9: In a purely capacitive AC circuit, what is the phase relationship between the voltage
and the current?
A. Current leads voltage by 90 degrees
B. Current lags voltage by 90 degrees
C. Current and voltage are in phase
D. Current leads voltage by 180 degrees
Correct Answer: A
Rationale: The best answer is A because in a capacitive circuit, the current leads the
voltage by 90 electrical degrees.
Q10: According to Kirchhoff’s Current Law (KCL), what is true about currents entering
and leaving a junction in a circuit?
A. The sum of currents entering equals the sum of currents leaving.
B. The sum of currents entering is always greater than leaving.
C. The voltage drops across all branches are equal.
D. The total resistance is the sum of individual resistances.
Correct Answer: A
Rationale: This choice is correct because KCL states that the algebraic sum of currents
at a node is zero, meaning what goes in must come out.
Q11: What is the power factor of a circuit that draws 100A and has a real power (True
Power) of 10kW at a voltage of 120V?
A. 100%
B. 83%
C. 50%
D. 1.0
Correct Answer: B
Rationale: The best answer is B; Apparent Power is 120V x 100A = 12kVA, so Power
Factor = True Power / Apparent Power = 10kW / 12kVA = 0.833 or 83%.
Certification Exam Actual Exam |
Complete Questions with Solution
| Pass Guaranteed - A+ Graded
Electrical Theory & Fundamentals
Q1: In a DC series circuit with three resistors (10Ω, 20Ω, and 30Ω), what is the total
resistance?
A. 5.5Ω
B. 60Ω
C. 600Ω
D. 0.05Ω
Correct Answer: B
Rationale: The best answer is B because in a series circuit, the total resistance is the
sum of all individual resistances (10 + 20 + 30 = 60Ω).
Q2: Using Ohm’s Law, if a circuit has a voltage of 120V and a resistance of 10Ω, what is
the current?
A. 12A
B. 1200A
C. 0.08A
D. 12mA
Correct Answer: A
Rationale: The best answer is A because Ohm's Law states I = E/R, so 120 divided by
10 equals 12 amps.
Q3: Which type of electrical load typically has a lagging power factor because it
consumes reactive power to create a magnetic field?
A. Incandescent lighting
B. Resistive heater
C. Induction motor
D. Synchronous condenser
Correct Answer: C
,Rationale: Induction motors and other inductive loads cause the current to lag the
voltage, resulting in a lagging power factor.
Q4: What is the effective voltage (RMS) of a single-phase AC sine wave with a peak
value of approximately 170 volts?
A. 120V
B. 240V
C. 340V
D. 85V
Correct Answer: A
Rationale: The best answer is A because RMS voltage is roughly 0.707 times the peak
voltage (170 x 0.707 = 120V).
Q5: A transformer has a primary voltage of 120V and a secondary voltage of 24V. If
there are 200 turns on the primary winding, how many turns are on the secondary?
A. 40
B. 100
C. 800
D. 24
Correct Answer: A
Rationale: This choice is correct because the turns ratio is proportional to the voltage
ratio (120/24 = 5), so 200 turns divided by 5 equals 40 turns.
Q6: What is the total power consumed by a 240V heater with a resistance of 12Ω?
A. 20W
B. 2880W
C. 4800W
D. 5.76kW
Correct Answer: C
Rationale: The best answer is C; using the power formula P = E²/R, 240 squared
(57,600) divided by 12 equals 4800 watts (4.8kW).
Q7: Three resistors of 30Ω each are connected in parallel to a 12V battery. What is the
total current drawn from the battery?
A. 1.2A
B. 0.4A
C. 3.6A
D. 0.8A
Correct Answer: A
Rationale: This choice is correct because the equivalent resistance of three 30Ω
resistors in parallel is 10Ω; I = E/R, so 12V / 10Ω = 1.2A.
, Q8: Which rule describes the behavior of magnetic fields around a current-carrying
conductor?
A. Fleming’s Left-Hand Rule
B. Kirchhoff’s Voltage Law
C. The Right-Hand Grip Rule
D. Maxwell’s Corkscrew Rule
Correct Answer: C
Rationale: The best answer is C because the Right-Hand Grip Rule is a mnemonic used
to determine the direction of the magnetic field generated by a current flow.
Q9: In a purely capacitive AC circuit, what is the phase relationship between the voltage
and the current?
A. Current leads voltage by 90 degrees
B. Current lags voltage by 90 degrees
C. Current and voltage are in phase
D. Current leads voltage by 180 degrees
Correct Answer: A
Rationale: The best answer is A because in a capacitive circuit, the current leads the
voltage by 90 electrical degrees.
Q10: According to Kirchhoff’s Current Law (KCL), what is true about currents entering
and leaving a junction in a circuit?
A. The sum of currents entering equals the sum of currents leaving.
B. The sum of currents entering is always greater than leaving.
C. The voltage drops across all branches are equal.
D. The total resistance is the sum of individual resistances.
Correct Answer: A
Rationale: This choice is correct because KCL states that the algebraic sum of currents
at a node is zero, meaning what goes in must come out.
Q11: What is the power factor of a circuit that draws 100A and has a real power (True
Power) of 10kW at a voltage of 120V?
A. 100%
B. 83%
C. 50%
D. 1.0
Correct Answer: B
Rationale: The best answer is B; Apparent Power is 120V x 100A = 12kVA, so Power
Factor = True Power / Apparent Power = 10kW / 12kVA = 0.833 or 83%.
