Deck 5: Batteries

Question 1

An electrolyte is a substance that mixes with water to form a solution or mixture that conducts electricity.

Answer 1

True

Question 2

In a fully-charged battery, all plates are transformed into lead-sulfate and the electrolyte is transformed into pure water.

Answer 2

False

Question 3

Voltage sources that are placed in parallel with each other will assume a common voltage.

Answer 3

True

Question 4

Voltage sources that are connected in series always result in a higher total voltage than any of the voltage sources alone.

Question 5

An arc welder can be used to jump start a truck provided the lowest DC setting of the welder is selected.

Question 6

Recombinant lead acid batteries refer to a type of unsealed batteries which require the addition of water through a filler cap at the top of the battery.

Question 7

Lithium-ion batteries require periodic replenishment of the ionized water electrolyte.

Question 8

A lead-acid battery's internal resistance can be measured using an ohmmeter.

Question 9

To charge a lead-acid battery, what must occur?

A) The water must be removed from the battery and replaced with sulfuric acid.
B) An electric load must be placed across the battery's terminals.
C) An alternating current supplied by the alternator must pass through the battery.
D) A direct current must pass through the battery.

Question 10

Technician A says that the cells in a lead-acid battery are connected in series. Technician B says that the plates in a lead-acid battery are connected in parallel. Who is correct?

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

Question 11

Parallel-connected batteries provide additional _____ compared to a single battery?

A) available current
B) CCA
C) reserve capacity
D) all of the above

Question 12

Technician A says that a higher CCA battery always has a higher open circuit voltage than a lower CCA battery. Technician B says that the reserve capacity rating of a battery indicates the exact length of time a truck can be driven with a failed charging system. Who is correct?

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

Question 13

Which is of the following tools would likely be used to test a battery?

A) Refractometer
B) Carbon pile
C) Inductive ammeter
D) All of the above

Question 14

Technician A says that the specific gravity of the electrolyte has a value of 1.00 in a fully-charged battery. Technician B says that specific gravity measurements must be temperature compensated. Who is correct?

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

Question 15

Which of the following is a true statement?

A) Batteries self-discharge at a higher rate in cold temperatures.
B) Surface charge refers to hydrogen gas bubbles that form on the plates during battery charging.
C) The open-circuit voltage of a fully-charged 12V lead acid battery is 12.2V.
D) All of the above are true statements.

Question 16

A technician is working on vehicle with a 24V electrical system. There are four 12V batteries. How are these batteries connected?

A) All batteries are connected in series.
B) All batteries are connected in parallel.
C) Two of the batteries are connected in a series-opposing configuration.
D) The batteries are connected in a series-parallel configuration.

Question 17

Technician A says that a lead-acid battery should be load tested by applying a load of double the CCA rating of the battery. Technician B says that a battery with frozen electrolyte must be thawed before attempting to recharge the battery. Who is correct?

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

Question 18

Three 1.5V D-cell batteries connected in a series-aiding arrangement produce about ___?

A) 3V
B) 4.5V
C) 1.5V
D) 6V

Question 19

Which 12V lead acid battery would likely have the highest internal resistance?

A) A fully-charged battery at 32°F (0°C)
B) A battery with an open circuit voltage measurement of 12.6V
C) A battery that has electrolyte with a specific gravity of 1
D) A fully-charged battery at 72°F (22°C)

Question 20

Batteries serve four main purposes: provide power for ignition-off accessories, supply current for the starter motor, permit the vehicle to operate for a short period of time in the event of charging system failure, and _______?

A) provide ballast
B) stabilize the electrical system
C) provide a positive temperature coefficient
D) limit the production of lead dioxide emissions