These questions are electrician realated

conductors

1. the calculation used to determine amperage of a conductor based on the total number of conductors in a conduit is called a. derating. b. conduit fill. c. voltage drop. d. conductor fill.

2. a conductor with a diameter of 100 mils has an area of a. 100 in2. b. 0.00785 in2. c. 0.01 cmil. d. 100 kcmil.

3. what size copper wire should be used for a 125 ft, 15 a branch circuit if a maximum voltage drop of 3.2 v is allowed? a. no. 12 b. no. 14 c. no. 10 d. no. 8

4. if a cable insulation is described as rhw, you would be able to use the cable for what maximum temperature? a. 167°f b. 194°f c. 140°f d. 86°f

5. the most widely used insulator for splices of smaller wires, like those used for devices, is a. a split bolt. b. solder. c. friction tape. d. a wire nut.

6. the ease with which a material allows electricity to move is called a. voltage. b. potential. c. conductivity. d. ampacity.

7. which one of the following types of wire can be used with the pressure terminals of a duplex receptacle? a. stranded aluminum b. stranded copper c. solid aluminum d. solid copper

8. what is the ampacity of a no. 3/0, thhn copper wire, in a conduit with one other conductor? a. 350 a b. 200 a c. 175 a d. 225 a

9. the ampacity of a no. 12 aluminum wire with rhw insulation installed in a raceway that has 19 other wires is a. 7 a. b. 15 a. c. 5 a. d. 10 a.

10. a single no. 10 copper wire with type thw insulation that's used in free air with an ambient temperature of 158°f has an approximate ampacity of a. 16.5 a. b. 36.9 a. c. 40.0 a. d. 31.9 a.

11. an electric iron is plugged into a receptacle that has 110 v present. if the voltage loss from the panel to the receptacle is 6 v, the line voltage at the panel is a. 116 v. b. 120 v. c. 104 v. d. 110 v.

12. ideally, nm or armored cable should be installed in a wall stud at least how far back from the front edge of the stud? a. 3/4 in. b. 11/4 in. c. 11/2 in. d. 1 in.

13. when soldering a lug onto a copper wire, you would use a. plain solder without flux. b. acid-core solder only. c. rosin-core solder only. d. both plain solder and an acid.

14. the diameter of a no. 6 wire is larger than a a. no. 2/0 wire. b. 250 kcmil cable. c. no. 4 wire. d. no. 12 wire.

15. a nonshielded cable with a 1.5-inch diameter should have a minimum bending radius of a. 12.0 in. b. 6.0 in. c. 18.0 in. d. 1.5 in.

16. five no. 8 aluminum conductors with thhn insulation are to be routed through a conduit found in a boiler room with an ambient temperature of 75°c. the ampacity of each conductor is a. 48.0 a. b. 36.6 a. c. 17.0 a. d. 14.8 a.

17. a type tw cable containing two no. 12 copper conductors has a maximum overcurrent protection of a. 25 a. b. 15 a. c. 20 a. d. 30 a.

18. a conductor that's described as a 750 mcm wire has an area of a. 750 cmils. b. 750,000 kcmils. c. 750 kcmils. d. 750 in2.

19. which type of tape is used to round sharp edges on splices using larger conductors? end of exam a. cotton tape b. friction tape c. plastic tape d. rubber tape

20. ampacity, or the maximum flow of electricity for a time period, a. decreases as wire number decreases. b. increases as wire diameter increases. c. increases as wire number increases. d. isn't dependent on wire diameter or number.

points only for correct answers