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

Type LR

Type X

Type LL

Type T

Question 1 of 20

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

Combination couplings

Flex connectors

Expansion couplings

Hinged couplings

Question 2 of 20

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

Equipment grounding conductor sizes

IMC marking requirements

RMC support requirements

IMC support requirements

Question 3 of 20

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

End plates

Derating factors

Tee fittings

Trough crosses

Question 4 of 20

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

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

bundle wires and cables together

connect conduit to boxes

carry wires through conduit and other types of raceways

Question 5 of 20

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

Type C

Type X

Type T

Type L

Question 6 of 20

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

Flexible metal conduit

RMC

Black enamel steel conduit

Aluminum

Question 7 of 20

8. NEC Article 386 contains ________.

a list of the various types of special raceways

the installation specifications of surface metal raceways

information on multi-outlet assemblies

regulations for combination raceways

Question 8 of 20

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

It is more resistant to wet environments.

It is too thin to be threaded.

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

It requires more maintenance.

Question 9 of 20

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

high-density polyethylene conduit

liquidtight flexible metal conduit

rigid polyvinyl chloride conduit

liquidtight flexible nonmetallic conduit

Question 10 of 20

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

HDPE

EMT

IMC

RMC

Question 11 of 20

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

HDPE

LFNC

identical conductors in flexible conduit

identical conductors in steel conduit

Question 12 of 20

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

10'

20'

8'

15'

Question 13 of 20

14.

Which kind of anchor is shown in the figure above?

Self-drilling

Drop-in

Drive-in

Toggle bolt

Question 14 of 20

15. EMT must be supported every ________.

15 feet

5 feet

3 feet

10 feet

Question 15 of 20

16. EMT is ________.

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

conduit that has been given a thin coating of PVC

steel conduit coated with a black enamel

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

Question 16 of 20

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

Black enamel steel conduit

IMC

PVC

RMC

Question 17 of 20

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

IMC

HDPE

LFNC

PVC

Question 18 of 20

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

Type LL

Type LB

Type LR

Type LRL

Question 19 of 20

20. What is another name for a standoff support?

Clamp back

Beam clamp

Trapeze

Minerallac®

Question 20 of 20

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