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1.

Which kind of anchor is shown in the figure above?

Self-drilling

Drop-in

Toggle bolt

Drive-in

Question 1 of 20

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

Flexible metal conduit

Black enamel steel conduit

Aluminum

RMC

Question 2 of 20

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

IMC

EMT

HDPE

RMC

Question 3 of 20

4. EMT is ________.

conduit that has been given a thin coating of PVC

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

steel conduit coated with a black enamel

Question 4 of 20

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

connect conduit to boxes

carry wires through conduit and other types of raceways

bundle wires and cables together

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

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 L

Type T

Type X

Question 6 of 20

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

Black enamel steel conduit

IMC

RMC

PVC

Question 7 of 20

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

20'

10'

15'

8'

Question 8 of 20

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

Expansion couplings

Combination couplings

Hinged couplings

Flex connectors

Question 9 of 20

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

Trough crosses

Derating factors

Tee fittings

End plates

Question 10 of 20

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

liquidtight flexible nonmetallic conduit

rigid polyvinyl chloride conduit

liquidtight flexible metal conduit

high-density polyethylene conduit

Question 11 of 20

12. What is another name for a standoff support?

Minerallac®

Clamp back

Trapeze

Beam clamp

Question 12 of 20

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

Type T

Type X

Type LR

Type LL

Question 13 of 20

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

identical conductors in steel conduit

LFNC

identical conductors in flexible conduit

HDPE

Question 14 of 20

15. NEC Article 386 contains ________.

regulations for combination raceways

information on multi-outlet assemblies

a list of the various types of special raceways

the installation specifications of surface metal raceways

Question 15 of 20

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

IMC marking requirements

IMC support requirements

Equipment grounding conductor sizes

RMC support requirements

Question 16 of 20

17. EMT must be supported every ________.

15 feet

5 feet

3 feet

10 feet

Question 17 of 20

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

Type LRL

Type LL

Type LB

Type LR

Question 18 of 20

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

It is too thin to be threaded.

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

It is more resistant to wet environments.

It requires more maintenance.

Question 19 of 20

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

HDPE

PVC

LFNC

IMC

Question 20 of 20

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