Michigan Industrial Electrician Level 2
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. An industrial control panel is required to have a disconnecting means
that is:
A. Remote-operated
B. Lockable and clearly labeled
C. Readily accessible and identified
D. Located at least 25 ft from the equipment
Bold & Italic Rationale: The disconnecting means for an industrial
control panel must be readily accessible and identified so that it can
be safely operated and isolated during maintenance or emergencies.
2. The purpose of a three-phase motor’s star-delta starter is to:
A. Reverse the direction of rotation
B. Reduce the starting current
C. Increase full-load torque
D. Convert single-phase supply to three-phase
Bold & Italic Rationale: A star-delta starter reduces the inrush current
during motor start-up by initially connecting the windings in a star
configuration.
3. NEC Article 430 covers requirements for:
A. Motors, motor circuits, and controllers
B. Hazardous locations
C. Ground-fault circuit interrupters
D. Emergency lighting
, Bold & Italic Rationale: NEC Article 430 specifically addresses the
installation and protection of motors, motor branch circuits, and
motor controllers.
4. The primary purpose of surge protection in an industrial system is to:
A. Improve power factor
B. Reduce harmonic distortion
C. Protect against transient voltage spikes
D. Increase system voltage
Bold & Italic Rationale: Surge protection devices are installed to
safeguard equipment from transient overvoltages caused by
lightning or switching surges.
5. In PLC ladder logic, an output coil energizes when:
A. Any input is false
B. The rung is de-energized
C. The rung conditions are true
D. All timers are disabled
Bold & Italic Rationale: An output coil in ladder logic is energized
when all preceding conditions in the rung evaluate to true.
6. A motor rated at 10 HP, 460 V, and 0.85 efficiency draws
approximately how much current at full load? (Use 746 W per HP)
A. ~8 A
B. ~10 A
C. ~15 A
D. ~25 A
Bold & Italic Rationale: Using P = HP×746/ (√3×V×efficiency×PF), the
approximate full-load current for a 10 HP motor at 460 V is about
15 A.
7. NEC requirements for grounding of industrial equipment ensure:
A. Faster circuit operation
B. Protection from electrical shock and equipment damage
C. Increased load capacity
D. Reduced power billing
Bold & Italic Rationale: Proper grounding is essential for safety by
providing a low-impedance path to clear faults and protect personnel
and equipment.
, 8. A 480 V delta system with a corner grounded leg will have which
voltages?
A. 277/480 V
B. 240/480 V
C. 120/240 V
D. 208/120 V
Bold & Italic Rationale: In a 480 V delta with one leg grounded,
line-to-ground voltage on two legs will be 240 V.
9. A variable frequency drive (VFD) is primarily used to:
A. Provide emergency backup power
B. Step up voltage
C. Vary motor speed
D. Increase current capacity
Bold & Italic Rationale: VFDs control motor speed and torque by
varying output frequency and voltage.
10. NEC minimum conductor size for a 30 A branch circuit is:
A. 12 AWG
B. 10 AWG
C. 8 AWG
D. 14 AWG
Bold & Italic Rationale: A 10 AWG copper conductor is the minimum
size permitted for a 30 A branch circuit according to NEC ampacity
tables.
11. A control transformer’s primary should be protected by an
overcurrent device rated at:
A. 50% of transformer rating
B. 125% of primary rated current
C. 100% of secondary rated current
D. 250% of primary rated current
Bold & Italic Rationale: NEC requires transformer primary
overcurrent protection at not more than 125% of the primary rated
current.
12. In motor overload protection, the device is selected to trip at:
A. 50% of nameplate FLA
B. 100% above rated voltage
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. An industrial control panel is required to have a disconnecting means
that is:
A. Remote-operated
B. Lockable and clearly labeled
C. Readily accessible and identified
D. Located at least 25 ft from the equipment
Bold & Italic Rationale: The disconnecting means for an industrial
control panel must be readily accessible and identified so that it can
be safely operated and isolated during maintenance or emergencies.
2. The purpose of a three-phase motor’s star-delta starter is to:
A. Reverse the direction of rotation
B. Reduce the starting current
C. Increase full-load torque
D. Convert single-phase supply to three-phase
Bold & Italic Rationale: A star-delta starter reduces the inrush current
during motor start-up by initially connecting the windings in a star
configuration.
3. NEC Article 430 covers requirements for:
A. Motors, motor circuits, and controllers
B. Hazardous locations
C. Ground-fault circuit interrupters
D. Emergency lighting
, Bold & Italic Rationale: NEC Article 430 specifically addresses the
installation and protection of motors, motor branch circuits, and
motor controllers.
4. The primary purpose of surge protection in an industrial system is to:
A. Improve power factor
B. Reduce harmonic distortion
C. Protect against transient voltage spikes
D. Increase system voltage
Bold & Italic Rationale: Surge protection devices are installed to
safeguard equipment from transient overvoltages caused by
lightning or switching surges.
5. In PLC ladder logic, an output coil energizes when:
A. Any input is false
B. The rung is de-energized
C. The rung conditions are true
D. All timers are disabled
Bold & Italic Rationale: An output coil in ladder logic is energized
when all preceding conditions in the rung evaluate to true.
6. A motor rated at 10 HP, 460 V, and 0.85 efficiency draws
approximately how much current at full load? (Use 746 W per HP)
A. ~8 A
B. ~10 A
C. ~15 A
D. ~25 A
Bold & Italic Rationale: Using P = HP×746/ (√3×V×efficiency×PF), the
approximate full-load current for a 10 HP motor at 460 V is about
15 A.
7. NEC requirements for grounding of industrial equipment ensure:
A. Faster circuit operation
B. Protection from electrical shock and equipment damage
C. Increased load capacity
D. Reduced power billing
Bold & Italic Rationale: Proper grounding is essential for safety by
providing a low-impedance path to clear faults and protect personnel
and equipment.
, 8. A 480 V delta system with a corner grounded leg will have which
voltages?
A. 277/480 V
B. 240/480 V
C. 120/240 V
D. 208/120 V
Bold & Italic Rationale: In a 480 V delta with one leg grounded,
line-to-ground voltage on two legs will be 240 V.
9. A variable frequency drive (VFD) is primarily used to:
A. Provide emergency backup power
B. Step up voltage
C. Vary motor speed
D. Increase current capacity
Bold & Italic Rationale: VFDs control motor speed and torque by
varying output frequency and voltage.
10. NEC minimum conductor size for a 30 A branch circuit is:
A. 12 AWG
B. 10 AWG
C. 8 AWG
D. 14 AWG
Bold & Italic Rationale: A 10 AWG copper conductor is the minimum
size permitted for a 30 A branch circuit according to NEC ampacity
tables.
11. A control transformer’s primary should be protected by an
overcurrent device rated at:
A. 50% of transformer rating
B. 125% of primary rated current
C. 100% of secondary rated current
D. 250% of primary rated current
Bold & Italic Rationale: NEC requires transformer primary
overcurrent protection at not more than 125% of the primary rated
current.
12. In motor overload protection, the device is selected to trip at:
A. 50% of nameplate FLA
B. 100% above rated voltage
