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A(n) ____________________ voltage charger reduces the amount of charging current while maintaining the output voltage at the same level as the battery reaches its full charge.

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All of the following statements are true EXCEPT:


A) new batteries with cell caps are sometimes shipped dry, requiring the addition of electrolyte.
B) electrolyte, which is approximately 75% acid and 25% water (by volume) , is shipped in a large plastic bag inside a sturdy cardboard box.
C) after filling a dry battery, allow it to sit for at least 15 minutes so that the plates can soak up the electrolyte.
D) concentrated acid can damage your eyes, burn skin, and destroy clothes.

E) A) and C)
F) B) and C)

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Modern ammeters often use a(n) ____ to sense the amount of current flowing through the cable or wire.


A) surface charge
B) carbon pile
C) parasitic load
D) inductive pickup

E) A) and D)
F) All of the above

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What precautions should you take when jump starting a vehicle?

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1. Wear eye protection.
2. Do not try to...

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Whether a cable is to be repaired or replaced, it must remain long enough after installation to permit enough slack for the engine to be able to freely rock on its mounts.

A) True
B) False

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There are two causes of increased resistance at cable connections: ____________________ and air.

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battery ac...

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Resistance at the cable connections is a major cause of starting system problems.

A) True
B) False

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All of the following statements are true EXCEPT:


A) when a vehicle is left for a month at a time without being started, its battery is still being discharged by loads that are present while the key is off.
B) a battery that is only half charged can often start an engine during warm weather.
C) the battery load test, also called a heavy load test, is a battery capacity test that can be done to a battery with at least a 65% state of charge.
D) a volt-amp tester, or VAT, is used by some shops for the battery load test.

E) B) and C)
F) A) and B)

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When determining a battery's condition, what items should you look at?

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Inspect the following items: 1. Date code on the battery label. This tells the date that the battery was installed in the vehicle. 2. Battery case condition. Electrolyte deposits on the surface of the case can conduct electricity between the positive and negative terminals, discharging the battery. Check for damage to the battery case. 3. Level of the electrolyte. Add distilled water as needed to fill the battery to the split ring at the bottom of the hole beneath the cell cap. If one of the cells is low, there could be a short in that cell. Low electrolyte throughout the battery indicates the possibility of overcharging. 4. Condition of the cables and terminals. Clean them as needed. 5. Battery holddown and tray. 6. Built-in hydrometer (some batteries).

While having a discussion, Technician A says that a sulfuric acid smell and/or boiling electrolyte indicates that a battery is being charged too fast. Technician B says that electrolyte boiling is not an indication of a problem. Who is correct?


A) A only
B) B only
C) Both A and B
D) Neither A nor B

E) All of the above
F) A) and B)

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Which of the following statements is LEAST-Likely true?


A) A slow charge is easiest on the battery.
B) During a slow charge, the charging rate is between 10 amps and 25 amps.
C) A battery is fully charged at the end of a slow charge when its specific gravity does not climb higher during two checks with a hydrometer, done 1 hour apart.
D) Following a recharge, if the difference between hydrometer readings taken from different cells is more than 0.050, the battery should be replaced.

E) None of the above
F) A) and B)

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A battery with a state of charge of 65% or more is considered "charged."

A) True
B) False

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How would you save a sulfated battery?

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A sulfated battery can sometimes be save...

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If a battery that is in good condition continually goes dead, there may be a circuit that is causing the drain when everything is supposed to be off. This is MOST-Likely referred to as:


A) surface charge
B) parasitic load
C) carbon pile
D) lead oxidation

E) B) and D)
F) A) and D)

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____, which looks like white powder on and around battery posts, sometimes happens when battery gas escapes up the terminal post from inside the case.


A) Corrosion
B) Electrolysis
C) Sulfation
D) Battery holddown

E) None of the above
F) B) and C)

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A

A(n) ____________________ is when there is a high rate of current for a short period.

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What are the steps involved in jump starting a vehicle?

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Turn on the heater blower motor in the v...

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When a battery is low on water, it has very little internal resistance.

A) True
B) False

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Battery service includes replenishing water (except on no-maintenance batteries) and service to the terminals and clamps.

A) True
B) False

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True

How would you test battery capacity without a carbon pile VAT (volt-amp tester)?

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Battery capacity can be tested without a...

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