EFX Electrician Craft Test

Electrician Craft Test

Directions: You have 45 minutes to complete this test. Answer all questions to the best of your ability. Select the most appropriate answer for each multiple-choice question. Each question is worth one point. There are 20 questions total.

Safety Reminder: Always prioritize safety while working in the field. This test includes both theoretical knowledge and practical scenarios.

Enter Your Info

1 / 20

1. What is the unit of electrical resistance?

Ampere

Ohm

Volt

Watt

2 / 20

2. A three-phase motor is running but vibrating excessively. What is the most likely cause?

Incorrect voltage

Loose connections

Phase imbalance

Open ground

3 / 20

3. What does a transformer do in an electrical system?

Converts DC to AC

Steps up or steps down voltage

Increases current

Stores electrical energy

4 / 20

4. In an industrial setting, what is the most common voltage for three-phase power distribution?

120V

208V

277V

480V

5 / 20

5. Which of the following is not a type of electrical conduit?

EMT

RMC

PVC

HDPE

6 / 20

6. What is the minimum depth required for burying rigid metal conduit underground in an industrial area?

6 inches

12 inches

18 inches

24 inches

7 / 20

7. According to OSHA, at what voltage must lockout/tagout procedures be used?

50V

100V

208V

480V

8 / 20

8. What type of PPE is required when working on an energized 480V circuit?

Leather gloves

Rubber-insulated gloves with leather protectors

Cotton gloves

None, if you are careful

9 / 20

9. Grounding conductors are typically what color in the United States?

Black

White

Green

Red

10 / 20

10. When working in a hazardous (Class I, Division 1) location, what type of electrical enclosure must be used?

NEMA 1

NEMA 3R

Explosion-proof (NEMA 7)

NEMA 4X

11 / 20

11. A circuit breaker keeps tripping when a motor starts. What is the most likely cause?

A short circuit

Overloaded circuit

Open neutral

Grounding issue

12 / 20

12. What should be checked first when troubleshooting a non-functioning electrical panel?

Voltage supply

The panel door

The wire gauge

The panel label

13 / 20

13. Which type of meter is best for checking the current draw of a motor?

Voltmeter

Ohmmeter

Clamp-on ammeter

Megohmmeter

14 / 20

14. What happens if a motor is connected in a delta configuration instead of a wye configuration?

Voltage remains the same

The motor will run faster and draw more current

The motor will not start

The motor will overheat and shut down

15 / 20

15. A 480V three-phase motor has no power. The breaker is closed, and the control circuit is active. What should you check next?

The ground wire

The neutral wire

The fuses or overload relays

The panel schedule

16 / 20

16. In an industrial setting, what color is typically used for 120V control wiring?

Blue

Yellow

Red

Green

17 / 20

17. What is the minimum gauge wire required for a 30A circuit using THHN wire?

10 AWG

12 AWG

14 AWG

8 AWG

18 / 20

18. How is the rotation of a three-phase motor reversed?

Swap any two phase conductors

Adjust the motor's ground wire

Reverse the neutral and ground

Change the voltage setting

19 / 20

19. What is the function of an industrial Variable Frequency Drive (VFD)?

Increase voltage

Control the speed of a motor

Convert AC to DC

Protect against ground faults

20 / 20

20. What is the primary purpose of an electrical relay in an industrial control circuit?

Convert AC to DC

Open or close a circuit using a low-power control signal

Measure current

Store electrical energy

Your score is

Exit

By WordPress Quiz plugin

Need Help?

Contact us anytime for information on our services and let us help you make the best decision. We assure you we offer the best services in our industry. We welcome any questions or concerns and look forward to exceeding your expectations. Get in touch with us today!

Contact Us

Fill out the form below and our customer service representative will reach out to you

Our goal is to provide purposeful and comprehensive solutions with an emphasis on efficiency and safety.

Services

Pipe Fabrication & Installation
Structural
Site/Civil
Pipeline Construction
EFX Specialties
Electrical & Instrumentation
Heavy Lifting & Equipment Install

CALL NOW