Review Questions

1. Which of the following occurs within an automobile battery? a.The positive plate gains electrons and is positively charged. b.The negative plate loses electrons and is negatively charged. c.The positive plate loses electrons andthe negative plate gains electrons. d.The positive plate gains electrons andthe negative plate loses electrons.

2. Battery electrolyte is a mixture of water and: a.Lead peroxide b.Sulfuric acid c.Lead sulfate d.Sulfur crystals

3. The plates of a discharged battery are: a.Two similar metals in the presence of an electrolyte b.Two similar metals in the presence ofwater c.Two dissimilar metals in the presence of an electrolyte d.Two dissimilar metals in the presence ofwater

4. Which of the following is true about a “secondary” battery? a.It can be recharged. b.Neither the electrolyte nor the metals change their atomic structure. c.One of the metals is totally destroyed by the action of the battery. d.The action of the battery cannot bereversed.

5. Which of the following does not occur during battery recharging? a.The lead sulfate on the plates gradually decomposes. b.The sulfate is redeposited in the water. c.The electrolyte is returned to full strength. d.The negative plates change back tolead sulfate.

6. Each cell of an automobile battery can produce about ________ volts. a.1.2 b.2.1

c.4.2 d.6 7. Which of the following is true of a 6-volt automobile battery? a.It has six cells connected in series. b.It has three cells connected in series. c.It has six cells connected in parallel. d.It has three cells connected in parallel. 8. The correct ratio of water to sulfuric acid in battery electrolyte is approximately: a.80 percent water to 20 percent sulfuricacid b.60 percent water to 40 percent sulfuricacid c.40 percent water to 60 percent sulfuricacid d.20 percent water to 80 percent sulfuricacid 9. At 80°F, the correct specific gravity of electrolyte in a fully charged battery is: a.1.200 to 1.225 b.1.225 to 1.265 c.1.265 to 1.280 d.1.280 to 1.300 10. A specific gravity of 1.170 to 1.190 at 80°F indicates that a battery’s state of charge isabout: a.75 percent b.50 percent c.25 percent d.10 percent 11. Which of the following materials is not used for battery separators? a.Lead b.Wood c.Paper d.Plastic 12. Batteries are rated in terms of: a.Amperes at 65°F b.Resistance at 32°F c.Voltage level at 80°F d.Cranking performance at 0°F 13. Maintenance-free batteries: a.Have individual cell caps b.Require water infrequently c.Have three pressure vents d.Use non-antimony lead alloys

14. Which of the following statements is not true of a replacement battery? a.It may have the same rating as theoriginal battery. b.It may have a higher rating than the original battery. c.It may have a lower rating than the original battery. d.It should be selected according to an application chart. 15. An automobile battery with a cranking performance rating of 380 can deliver 380amps for: a.30 seconds at 0°F b.60 seconds at 0°F c.90 seconds at 32°F d.90 seconds at 0°F 16. The principal cause of battery water loss is: a.Spillage from the vent caps b.Leakage through the battery case c.Conversion of water to sulfuric acid d.Evaporation due to heat of the chargingcurrent 17. Which of the following is not true of a maintenance-free battery? a.It will resist overcharging better than a vent-cap battery. b.It will lose water slower than a vent-cap battery. c.It will produce a greater voltage than a vent-cap battery. d.It has a greater electrolyte capacity than a vent-cap battery. 18. The electrolyte in a fully charged battery will generally not freeze until the temperature drops to: a.32°F b.0°F c. 20°F d. 50°F 19. The grid material used in a maintenancefree battery is alloyed with: a.Silicon b.Antimony c.Calcium d.Germanium

20. Low-maintenance batteries: a.Have no cell caps b.Have a higher proportion of sulfuric acid c.Have no gas-pressure vents d.Require infrequent water addition 21. Recombinant batteries are: a.Rebuilt units b.Completely sealed c.Vented to release gassing d.Able to produce a higher cell voltage 22. Which of these parts of a battery hold the electrical charge? a.Side-post types b.Positive and negative plates c.Top-post type d.Bottom plates 23. Technician A says that the battery term ampere-hour refers to stored charge capacity of a battery. Technician B says that a 75-ampere-hour charge applied to a 200ampere-hour battery should turn the charge indicator green. Who is right? a.A only b.B only c.Both A and B d.Neither A nor B

24. On a vehicle with the two battery 12-volt system, the battery’s connection is which one of the following? a.Series circuit b.Parallel circuit c.DC circuit d.AC circuit

25. During normal operation, the battery(s) perform all of the following functions, except: a.Provides electrical energy for the accessories when the engine is notrunning b.Acts as voltage storage for the truck electrical system c.Serves as the voltage source for starting d.Provides voltage for the injection solenoid when running 26. The subject of battery ratings is being discussed. Technician A says reserve capacity is a rating that represents the time in minutes that a battery can operate a truck at night with minimum electrical load. Technician

B says that cranking amps (CA) is basically the same as cold cranking amps (CCA) but at a temperature of 32°F. Who is right? a.A only b.B only c.Both A and B d.Neither A nor B