Assignment- Working with Conduit
1. A bend used to clear an obstruction and return to the original line of run is called a(n)
A. offset.
B. back-to-back.
C. saddle.
D. re-bend.
2. When installing conduit for a mast service, what type of conduit should you use?
A. IMC
B. Rigid-nonmetal
C. Rigid-metal
D. EMT
3. If the middle bend of a three-bend saddle is a 30-degree bend, the two outside bends will each have angles of
A. 30 degrees.
B. 45 degrees.
C. 60 degrees.
D. 15 degrees.
4. A(n) _______ must be attached to the top end of a conduit riser, where conduit is used in a service installation.
A. bushing
B. LB
C. entrance ell
D. service entrance head
5. Another name for thinwall conduit is
A. busway.
B. IMC.
C. Greenfield.
D. EMT.
6. A hand-operated conduit bender with a shoe for bending 1-inch EMT can also be used to bend
A. 1-inch rigid conduit.
B. 1/2 inch EMT.
C. 1-inch IMC.
D. 3/4 inch IMC.
7. Using 1/2-inch EMT and a hand bender, you want to make a bend with a 14-inch stub-up. How far from the end of the conduit should you put the mark that will line up with the bender arrow?
A. 14 inches
B. 9 inches
C. 19 inches
D. 16 (5/8) inches
8. You need to add a piece of 3/4 -inch rigid conduit between a section of conduit that ends at a distance of 5 feet from a wall and an outlet box that's located 4 feet up the wall. If you're going to thread the new piece before bending it, the length of conduit required will be
A. 8 feet 8 inches.
B. 8 feet 4 inches.
C. 9 feet 4 inches.
D. 9 feet 0 inches.
9. Which of the following bending angles would you probably make if the handle of your bender ends up in a vertical position?
A. 90 degrees
B. 30 degrees
C. 60 degrees
D. 180 degrees
10. If you have a motor that must remain adaptable to several sizes of belts, what is the maximum length of flexible metal conduit you can use before the conduit requires fastening?
A. 1 foot
B. 10 feet
C. 4 1/2 feet
D. 3 feet
11. A 10-inch beam is in the path of a conduit run from a junction box which is located 38 inches from the beam. The beam is to be bypassed by a 30-degree offset with the second offset bend occuring at the corner of the beam. At what distances from the outlet box will the two bends be marked on a length of 1-inch EMT?
A. 38 inches and 40 1/2 inches
B. 8 inches and 48 inches
C. 20 1/2 inches and 40 1/2 inches
D. 18 inches and 38 inches
12. One governing factor when determining the minimum size of conduit to be used is the
A. presence of water.
B. conductor fill.
C. length of the conduit.
D. location.
13. When making an offset in conduit, if the spacing between marks is double the offset depth, you know that the offset angle is
A. 90 degrees.
B. 30 degrees.
C. 45 degrees.
D. 22 1/2 degrees.
14. A _______ bend is necessary when attaching a piece of conduit between outlet boxes on facing walls.
A. single
B. saddle
C. back-to-back
D. offset
15. Bends are made in PVC conduit using a tool known as a
A. hand bender.
B. mechanical bender.
C. hydraulic bender.
D. heater box.
16. The internal area of 2-inch IMC is
A. less than the internal area of 2-inch EMT.
B. greater than the internal area of 2-inch rigid metal conduit.
C. less than the internal area of 2-inch rigid metal conduit.
D. the same as the internal area of 2-inch EMT.
17. When installing EMT conduit that will be exposed to wet conditions, _______ fittings should be used.
A. compression
B. set-screw
C. threaded
D. indenter
18. What is the cross-sectional area of a wire if its outside diameter is 0.0625 inch?
A. 0.0002 inch2
B. 0.7850 inch2
C. 0.0491 inch2
D. 0.0031 inch2
19. Which of the following combinations of bends can be used in a conduit run?
A. One 90-degree, three 45-degree, and four 30-degree
B. One 90-degree, six 45-degree and one 30-degree
C. Two 90-degree, four 45-degree, and one 30-degree
D. Two 90-degree, two 45-degree, and four 30-degree
20. The maximum length between supports for a straight horizontal 1(1/2) -inch threaded rigid-metal conduit run is
A. 3 feet.
B. 14 feet.
C. 20 feet.
D. 10 feet