Deck 26: Battery Fundamentals

Question 1

The most common method of rating automotive batteries in North America is ____________________.

Answer 1

cold cranking amps (CCA)
cold cranking amps
CCA

Question 2

Technician A says that with the engine off, most good batteries can provide about 25 amperes for 2 hours before discharging to the point where the engine will not start. Technician B says that most batteries can provide about 10 amperes for 30 minutes. Who is correct?

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

Answer 2

A

Question 3

When two different metals are immersed in an electrolyte solution, an alternating current (AC) voltage is produced.

Answer 3

False

Question 4

The largest load is the ____________________ motor, which draws a good deal of current from the battery. This is why battery cables are as large as they are.

Question 5

Which of the following statements is LEAST-Likely true?

A)AGM batteries can leak if they become damaged.
B)Recombination batteries are sealed batteries that use electrolyte gel or microporous nonwoven glass instead of liquid electrolyte.
C)AGM battery construction is sometimes the same as a conventional battery but without flat plates.
D)Absorbed glass mat (AGM) batteries do not use free-liquid or gel electrolyte.

Question 6

All of the following statements are true EXCEPT:

A)when the engine is on, the battery provides power for electrical accessories that are turned on.
B)during cranking, the battery supplies current to the starter.
C)the battery works like a capacitor, absorbing high-voltage surges that sometimes happen in the electrical system.
D)when the engine is running and electrical demands are more than the charging system can contribute, the battery serves as a reservoir, supplying electrical energy for the extra loads.

Question 7

When a light bulb is connected to the positive and negative terminals of a battery, the battery releases electrons by a chemical reaction, and the bulb lights up because these electrons are flowing through its filament.

Question 8

The battery's case is filled with electrolyte, a mixture of ____________________ and water.

Question 9

Some batteries have side terminals that have reinforced internal threads.

Question 10

In automotive batteries, ____ volts is the amount that the two dissimilar materials of the plates provide.

A)1.2
B)1.9
C)2.1
D)2.5

Question 11

Which of the following statements is LEAST-Likely true?

A)Maintenance-free batteries have cell plates made of a slightly different material.
B)Instead of the antimony used in conventional batteries, calcium or strontium is used to strengthen the plate grids.
C)When overcharged, calcium will only use 1/3 of the water that antimony does.
D)If the voltage regulator allows the alternator to overcharge the battery, the water level will increase.

Question 12

For a 12-volt battery, ____ is determined by the number of amperes a battery can deliver for 30 seconds at 0⁰F (-17.7⁰C) without terminal voltage falling below 7.2 volts.

A)DC
B)AC
C)capacity
D)CCA

Question 13

Batteries with M terminals are found on marine applications, motorcycles, and some imported cars.

Question 14

With the engine off, most good batteries can provide about 40 amperes for 3 hours before discharging to the point where the engine will not start.

Question 15

The positive and negative plates in a battery cell are held together in a(n) ____________________ by plate straps.

Question 16

What is the LEAST-likely material that a battery terminal clamp would be made of?

A)plated steel
B)graphite
C)brass
D)lead

Question 17

Electrical current is produced by a chemical reaction between the battery acid and two different types of lead material on the battery's positive and negative ____________________.

Question 18

While having a discussion, Technician A says that two 12-volt batteries can actually be connected together in parallel to provide more plate capacity. Technician B says that motorhomes often have this arrangement to provide sufficient storage capacity to supply all of their electrical needs for a night. Who is correct?

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

Question 19

All of the following statements are true EXCEPT:

A)as a battery oxidizes, its plates shed, or slough, material.
B)negative plates shed more material than positive plates.
C)most battery cases are constructed of lightweight polypropylene plastic with a one-piece cover.
D)sloughed off plate material collects in the bottom of the case between the raised cell supports in an area called the sediment chamber.

Question 20

The term that is MOST-Likely used to describe a connection that occurs when the positive and negative plates are connected to each other, adding up the voltages of the cells is:

A)element
B)sulfation
C)series
D)deep-cycle

Question 21

What are the advantages and disadvantages of a maintenance-free battery?

Question 22

Discuss three possible reasons for battery failure.

Question 23

What are the advantages of a low-maintenance battery?

Question 24

What factors relate to battery capacity?

Question 25

What are the advantages and disadvantages of deep-cycle lead antimony batteries?