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1. Which of the following conduits has a wall thickness less than that of RMC but thicker than EMT?

HDPE

LFNC

IMC

PVC

Question 1 of 20

2. Which of the following are used to prevent damage to PVC caused by temperature changes?

Flex connectors

Expansion couplings

Hinged couplings

Combination couplings

Question 2 of 20

3. What is another name for a standoff support?

Beam clamp

Trapeze

Minerallac®

Clamp back

Question 3 of 20

4. What type of conduit is used to connect machines that vibrate during operation?

Flexible metal conduit

RMC

Black enamel steel conduit

Aluminum

Question 4 of 20

5. Which of the following shall only be applied when the number of current-carrying conductors in a wireway exceeds three?

Trough crosses

End plates

Derating factors

Tee fittings

Question 5 of 20

6. NEC Article 386 contains ________.

information on multi-outlet assemblies

a list of the various types of special raceways

the installation specifications of surface metal raceways

regulations for combination raceways

Question 6 of 20

7. Which types of conduit bodies are used to join four intersecting conduits?

Type LL

Type T

Type LR

Type X

Question 7 of 20

8. EMT must be supported every ________.

10 feet

3 feet

15 feet

5 feet

Question 8 of 20

9. The purpose of a sealing fitting is to ________.

prevent the passage of gases, vapors, and flames through a conduit

connect conduit to boxes

bundle wires and cables together

carry wires through conduit and other types of raceways

Question 9 of 20

10. Which of the following types of conduit bodies has a 90∘ connector with the cover on the left?

Type LR

Type LB

Type LL

Type LRL

Question 10 of 20

11. What is the maximum allowable spacing between horizontal wireway supports?

15'

8'

10'

20'

Question 11 of 20

12. Which of the following can be found in NEC Article 344?

IMC support requirements

Equipment grounding conductor sizes

RMC support requirements

IMC marking requirements

Question 12 of 20

13. To act as a moisture seal, an outer covering of liquidtight, sunlight-resistant flexible material is placed around ________.

liquidtight flexible metal conduit

liquidtight flexible nonmetallic conduit

high-density polyethylene conduit

rigid polyvinyl chloride conduit

Question 13 of 20

14. Which of the following is true of aluminum conduit?

It is too thin to be threaded.

It requires more maintenance.

It is more resistant to wet environments.

It does not require supplementary corrosion protection when used in concrete.

Question 14 of 20

15. What type of conduit is approved for direct burial?

RMC

EMT

HDPE

IMC

Question 15 of 20

16. The voltage drop of conductors carrying alternating current in PVC will be less than that of ________.

identical conductors in flexible conduit

HDPE

LFNC

identical conductors in steel conduit

Question 16 of 20

17. EMT is ________.

steel conduit coated with a black enamel

often referred to as thinwall conduit and is too thin to be threaded

conduit that is constructed of metal thick enough to permit the cutting of pipe threads at each end

conduit that has been given a thin coating of PVC

Question 17 of 20

18. Which types of conduit bodies are used to provide a pull point on a straight conduit run?

Type X

Type C

Type T

Type L

Question 18 of 20

19. What type of conduit should be used where corrosion is a factor?

Black enamel steel conduit

RMC

IMC

PVC

Question 19 of 20

20.

Which kind of anchor is shown in the figure above?

Toggle bolt

Drive-in

Self-drilling

Drop-in

Question 20 of 20

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