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Texas Maintenance Electrician
Examination Practice Exam 2026 | 100
Questions & Answers with Detailed
Rationales | Complete Exam Prep &
Study Guide
1. What is the primary purpose of a lockout/tagout (LOTO) procedure?
A. To speed up maintenance work
B. To prevent accidental energization of equipment during servicing
C. To reduce electrical load
D. To improve equipment efficiency
Rationale: Lockout/tagout protects workers by ensuring equipment cannot be
energized while maintenance is being performed.
2. According to the NEC, electrical equipment shall be installed in a neat and
workmanlike manner under which article?
A. Article 90
B. Article 250
C. Article 110
D. Article 430
Rationale: NEC Article 110 contains general requirements for electrical
installations, including workmanship.
, 3. What instrument is commonly used to verify the absence of voltage before
beginning work?
A. Clamp meter
B. Megohmmeter
C. Multimeter or voltage tester
D. Wattmeter
Rationale: A properly rated voltage tester or multimeter is used to confirm
equipment is de-energized.
4. Which type of motor is most commonly used in industrial maintenance
applications?
A. Universal motor
B. Stepper motor
C. Three-phase induction motor
D. Servo motor
Rationale: Three-phase induction motors are reliable, durable, and widely used
in industrial facilities.
5. The primary function of grounding is to:
A. Increase voltage
B. Improve power factor
C. Provide a low-impedance path for fault current
D. Reduce conductor size
Rationale: Grounding safely directs fault current back to the source to facilitate
operation of overcurrent devices.
6. What is the standard frequency of electrical power in the United States?
A. 50 Hz
B. 25 Hz
C. 60 Hz
D. 100 Hz
, Rationale: Utility power in the United States operates at 60 hertz.
7. Which conductor is intentionally connected to earth at the service?
A. Equipment grounding conductor
B. Grounding electrode conductor
C. Grounded (neutral) conductor
D. Bonding jumper
Rationale: The grounded conductor is connected to earth at the service
disconnect.
8. What does a blown fuse usually indicate?
A. Low voltage
B. An overcurrent condition
C. Reverse polarity
D. Proper operation
Rationale: Fuses open when current exceeds their rated capacity.
9. A motor that overheats repeatedly should first be checked for:
A. Paint color
B. Nameplate location
C. Overload conditions and ventilation
D. Manufacturer's logo
Rationale: Excessive load or poor cooling commonly causes overheating.
10.Which PPE protects against arc flash injuries?
A. Cotton gloves only
B. Safety shoes only
C. Arc-rated clothing and face shield
D. Dust mask
Texas Maintenance Electrician
Examination Practice Exam 2026 | 100
Questions & Answers with Detailed
Rationales | Complete Exam Prep &
Study Guide
1. What is the primary purpose of a lockout/tagout (LOTO) procedure?
A. To speed up maintenance work
B. To prevent accidental energization of equipment during servicing
C. To reduce electrical load
D. To improve equipment efficiency
Rationale: Lockout/tagout protects workers by ensuring equipment cannot be
energized while maintenance is being performed.
2. According to the NEC, electrical equipment shall be installed in a neat and
workmanlike manner under which article?
A. Article 90
B. Article 250
C. Article 110
D. Article 430
Rationale: NEC Article 110 contains general requirements for electrical
installations, including workmanship.
, 3. What instrument is commonly used to verify the absence of voltage before
beginning work?
A. Clamp meter
B. Megohmmeter
C. Multimeter or voltage tester
D. Wattmeter
Rationale: A properly rated voltage tester or multimeter is used to confirm
equipment is de-energized.
4. Which type of motor is most commonly used in industrial maintenance
applications?
A. Universal motor
B. Stepper motor
C. Three-phase induction motor
D. Servo motor
Rationale: Three-phase induction motors are reliable, durable, and widely used
in industrial facilities.
5. The primary function of grounding is to:
A. Increase voltage
B. Improve power factor
C. Provide a low-impedance path for fault current
D. Reduce conductor size
Rationale: Grounding safely directs fault current back to the source to facilitate
operation of overcurrent devices.
6. What is the standard frequency of electrical power in the United States?
A. 50 Hz
B. 25 Hz
C. 60 Hz
D. 100 Hz
, Rationale: Utility power in the United States operates at 60 hertz.
7. Which conductor is intentionally connected to earth at the service?
A. Equipment grounding conductor
B. Grounding electrode conductor
C. Grounded (neutral) conductor
D. Bonding jumper
Rationale: The grounded conductor is connected to earth at the service
disconnect.
8. What does a blown fuse usually indicate?
A. Low voltage
B. An overcurrent condition
C. Reverse polarity
D. Proper operation
Rationale: Fuses open when current exceeds their rated capacity.
9. A motor that overheats repeatedly should first be checked for:
A. Paint color
B. Nameplate location
C. Overload conditions and ventilation
D. Manufacturer's logo
Rationale: Excessive load or poor cooling commonly causes overheating.
10.Which PPE protects against arc flash injuries?
A. Cotton gloves only
B. Safety shoes only
C. Arc-rated clothing and face shield
D. Dust mask
