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1. A worker is using a soft wire brush attached to an electric drill to clean a storage battery. What is wrong with this method?
A. The wire brush could leave metallic deposits near the posts that will short the battery.
B. The drill could create a spark and ignite the gases that normally surround a battery.
C. The wire brush could flake off small particles of dirt that can block the vent holes.
D. The wire brush can remove too much material from the posts of the battery.
2. How many series-connected cells does a typical 12 V storage battery contain?
A. 2
B. 6
C. 4
D. 8
3. What is the diameter of #12 gage copper wire?
A. 128.50 MILS
B. 162.00 MILS
C. 101.90 MILS
D. 80.81 MILS .
4. To construct a battery with a current of 6 A, you would connect six 1 A cells
A. to a ground.
B. in series-parallel.
C. in parallel.
D. in series.
5. How much current can a #10 AWG wire safely carry?
A. 45 A
B. 30 A
C. 20 A
D. 10 A
6. What is the specific gravity of a concentrated sulfuric acid solution?
A. 1.000
B. 1.419
C. 1.263
D. 1.835
7. How many series-connected 2 V cells does a typical 24 V storage battery contain?
A. 12 cells
B. 36 cells
C. 18 cells
D. 24 cells
8. The electrolyte in a typical wet storage cell or battery is a mixture of water and
A. lead.
B. zinc.
C. ammonium chloride.
D. sulfuric acid.
9. Irradiated PVC insulated jacket can withstand a maximum temperature of
A. 125° C
B. 150° C
C. 130° C
D. 140° C
10. What is the output voltage of a typical size "D" NiCad cell?
A. 1.2 VDC
B. 1.5 VDC
C. 1.0 VDC
D. 1.8 VDC
11. A group of several electric cells connected together is called a/an
A. electrode.
B. battery.
C. recharger.
D. electrolyte.
12. What is the resistance of 1,000 feet of #16 AWG copper wire?
A. 5.185
B. 2.575
C. 6.510
D. 4.094
13. In order to increase the temperature rating of standard PVC insulation, manufacturers can
A. dye the jacket.
B. coat the PVC with rubber.
C. coat the PVC with silicon.
D. irradiate the jacket.
14. A battery containing five 2 V cells connected in series has a total voltage of
A. 1/4 V.
B. 2 V.
C. 10 V.
D. 5 V.
15. What is the conductivity of lead as compared to silver?
A. 7
B. 30
C. 15
D. 61
16. The wire gage system used to measure wire sizes is the
A. Conductor Wire Gage (CWG).
B. American Wire Gage (AWG).
C. Stranded Gage System (SGS).
D. Standard Wire Gage (SWG).
17. What kind of electric cell is considered to be rechargeable?
A. Storage cell
B. Primary cell
C. Electrode cell
D. Dry cell
18. What is the resistance of a 1,000-foot length of #6 AWG wire at a temperature of 25 degrees C?
A. 0.6405 ohm
B. 0.1593 ohm .
C. 0.2533 ohm
D. 0.4028 ohm.
19. What type of wire is used in very high temperature locations, such as electric heater assemblies?
A. Nickel chromium wire with fiberglass insulation
B. Copper wire with FEP insulation
C. Nickel chromium wire with FEP insulation
D. Copper wire with TFFN insulation
20. Suppose you're trying to remove the clamp from a ground strap that's connected to a battery. The clamp won't come loose. Which of the following tools should you use to remove the clamp?
A. A pry bar
B. A hammer
C. A clamp puller
D. A clamp spreader
21. What is the current rating of a battery that can produce six amps of current for a period of four hours?
A. 2 ampere-hours
B. 24 ampere-hours .
C. 6 ampere-hours
D. 12 ampere-hours
22. What letters identify moisture-resistant latex rubber insulation?
A. RHH
B. RH
C. RUH
D. RUW
23. What is the "C" rate of a 3 AH rapid charge battery?
A. 3
B. 2.52
C. 1.5
D. 1.75
24. What kind of material is used to make the positive electrode of a dry cell?
A. Electrolyte paste
B. Steel cover
C. Carbon rod
D. Zinc can
25. During the charging of a storage battery, what is the temperature that the electrolyte solution must never exceed?
A. 60° F
B. 90° F
C. 110° F
D. 125° F
