Batteries lvl 2

An Automotive type lead-acid battery with three cells connected in series would produce:

3 volts

6 volts

9 volts

12 volts

Correct! Wrong!

The plate material in a discharged lead acid battery is changed to lead ____________.

peroxide

sulphate

nitrate

oxide

Correct! Wrong!

Electrolyte in a lead acid battery is made up of _____________ and water.

sulphate

peroxide

sulphuric acid

hydrochloric aci

Correct! Wrong!

Positive and negative plate groups are assembled with separators and placed into the case with electrolyte to complete individual.

groups

cells

elements

batteries

Correct! Wrong!

Dry-charged batteries when manufactured contain:

fully charged elements and no electrolyte

discharged elements and no electrolyte

fully charged elements and a half quantity of electrolyte

fully charged elements ready for installation

Correct! Wrong!

The capacity of a battery is rated in two ways. They are:

dry-charge and wet-charge

cold cranking amps and reserve capacity

25 ampere rating reserve capacity

200 ampere rating and cold cranking rating

Correct! Wrong!

The specific gravity of a fully charged battery at 80oF (27oC) is at least:

1.000

1.175

1.225

1.265

Correct! Wrong!

During the normal operation of a battery, the electrolyte level may become low. Only _____________ may be added to raise the electrolyte level.

acid

distilled water

acid/water mix

electrolyte

Correct! Wrong!

The area below the cells and the bottom of the case is designed to:

collect sediment that flakes off the plates

provide an area for expansion of the electrolyte

store excessive hydrogen gas

store excessive oxygen gas

Correct! Wrong!

The structure of a deep cycle battery differs from that of a conventional lead acid battery because it has:

thicker plates and denser material

more cells

more electrolyte

a lower element to electrolyte ratio

Correct! Wrong!

Selection of a suitable battery should be based on:

engine size and number of cylinders

lowest likely starting temperature

number of electrical accessories

all of the above

Correct! Wrong!

The amount of current a fully charged battery is capable of producing is dependent on the:

number and size of the plates

specific gravity of the electrolyte

voltage

condition of the sulphate radical

Correct! Wrong!

Approximately how much voltage can be obtained from a single cell of a storage battery?

about 2 V

about 6 V

about 12 V

varies with size of plates

Correct! Wrong!

When removing battery cables, you should first:

disconnect the insulated terminal cable

loosen the battery hold-down

disconnect the grounded terminal cable

drain the electrolyte

Correct! Wrong!

As safety precaution to neutralize spilled battery electrolyte, a mechanic should keep on hand a quantity of:

distilled water

baking soda

sulphuric acid

vaseline

Correct! Wrong!

When testing the specific gravity of a battery, the allowable variation between cells should no exceed:

.030

.050

.080

.500

Correct! Wrong!

Care must be taken while you work near batteries that are charging because a spark could explode the _____________ gas being given off in the charging process.

nitrogen

hydrogen

carbon dioxide

helium

Correct! Wrong!

Overcharging a battery can cause:

overheating

excessive loss of electrolyte.

damage to plates

all of the above

Correct! Wrong!

If batteries electrolyte is accidentally splashed in your eyes you must immediately:

call a doctor

flush with water for 15 minutes

cover eyes with baking soda

flush with milk for 5 minutes

Correct! Wrong!

The battery top must be kept clean and dry or the accumulated dirt and moisture will:

cause softening of the cell covers

create a fire or explosion hazard

cause the battery to self discharge

cause the battery to overcharge

Correct! Wrong!

When performing a load test on a battery you will calculate the amount of load by:

taking 1/2 the cold cranking ampere rating

multiplying the terminal voltage by 3

increasing the load slowly until all cells are smoking

multiplying the number of plates by 3

Correct! Wrong!

The lead acid storage battery is currently rated by the "Cold Cranking Amps" and the:

rated capacity

total capacity

left-over capacity

reserve capacity

Correct! Wrong!

What is the purpose of the three minute charge test?

to determine the load capability of the battery

to determine whether or not a battery is sulphated

to determine if the battery is fully charged

all of the above

Correct! Wrong!

When performing a three minute charge test, the voltage is greater than 15.5 volts after 3 minutes. What would this indicate?

the battery is fully charged

the battery is sulphated

the battery may be charged in the normal manner

all of the above

Correct! Wrong!

When performing a three minute charge test, what current rating should the charger be set at?

10% of the CCA to a max. of 40 amps

30% of the CCA to a max. of 40 amps

50% of the CCA to a max. of 40 amps

current rating is irrelevant

Correct! Wrong!

A battery''s output capacity is unaffected by temperature:

True

False

Correct! Wrong!

Why should the ground terminal of a battery be disconnected first when removing a battery from a vehicle

there is less voltage in this connection that the insulated connection

accidental grounding of tools, watches, rings etc. is reduced

prevents damage to any on board computers

all of the above

Correct! Wrong!

A frozen battery charges in the same time as a battery at room temperature.

True

False

Correct! Wrong!

When charging a battery, you should never:

disconnect the negative battery cable first

charge the battery until it reads 1.265 specific gravity

reduce the fast-charging rate when specific gravity reaches 1.225

charge a battery while frozen

Correct! Wrong!

When performing a high discharge load test on a battery, you should load the battery for:

3 seconds

5 seconds

15 seconds

30 seconds

Correct! Wrong!

A battery with a specific gravity reading of 1.225 would be about:

25% charged

50% charged

75% charged

100% charged

Correct! Wrong!

When charging batteries what is the temperature that the battery should not exceed?

22 degrees C (72F)

27 degrees C (80F)

49 degrees C (120F)

100 degrees C (212F)

Correct! Wrong!

The group number of a battery (eg. 27 or 4D) indicates the:

weight of the battery

battery dimensions

standard or deep cycle

number of plates per cell

Correct! Wrong!

These batteries are connected in:

series

series parallel

parallel

none of the above

Correct! Wrong!

The batteries above would generate:

6 volts

12 volts

24 volts

36 volts

Correct! Wrong!

The batteries shown below are connected in:

series

parallel

series-parallel

i do not know

Correct! Wrong!

The cells within an automotive style battery are normally connected in:

parallel

series

series parallel

pairs

Correct! Wrong!

Overchanging a battery can cause:

overheating

excessive loss of electrolyte

damaged plates

all of the above

Correct! Wrong!

When disconnecting a battery from a charger you should always:

disconnect both terminals at the same time

disconnect negative terminal first

shut off the charger first

check specific gravity first

Correct! Wrong!

The battery top must be kept clean and dry or the accumulated dirt and moisture will cause:

softening of the cell cover

the potential for a fire

excessive self discharge

lower voltage output

Correct! Wrong!

The battery''s ________________ is the medium through which the positive and negative plates in the battery cells react.

hydro-sulfuric acid.

lead sulfate.

water

magnesium sulfate

Correct! Wrong!

When performing a battery hydrometer test on a piece of equipment:

If the battery temperature is below 0 degrees Fahrenheit, the battery should be brought to room temperature before testing.

If the battery temperature is 120 degrees Fahrenheit , 0.020 should be subtracted from the hydrometer reading

the maximum variation in cell hydrometer readings is 0.100 specific gravity points.

the battery is fully charged if the cell hydrometer reading is at least 1.265

Correct! Wrong!

When discussing a battery capacity test with the battery temperature at 80 degrees Fahrenheit, Technician A says the battery discharge rate is calculated by multiplying two times the battery reserve capacity rating. Technician B says the battery is satisfactory if the voltage remains about 9.6 volts at 80 degrees Fahrenheit. Who is right?

A only

B only

Both A and B

Neither A nor B

Correct! Wrong!

An open circuit voltage test is being performed on a battery with a digital multimeter. Technician A says the voltage should add up to 2.1 volts per cell for a total of 12.6 volts. Technician B says that this test is used in place of a hydrometer for maintenance free batteries. Who is right?

A only

B only

Both A and B

Neither A nor B

Correct! Wrong!

Technician A says that a dark hydrometer eye on a maintenance-free battery indicates that the battery must be charged before further testing. Technician B says a green do in the hydrometer eye indicates that the battery is charged and testing may continue. Who is right?

A only

B only

Both A and B

Neither A nor B

Correct! Wrong!

When charging a maintenance -free battery, you observe the built-in hydrometer eye on the top of the battery, is clear or yellowish. This indicates that you should:

charge the battery at a fast rate

charge the battery at a slow rate

do nothing; the battery is fully charged

replace the battery

Correct! Wrong!

A technician checks the records of a unit, finds that the battery top is wet, is using excessive water and frequently needs topping up. What is the most likely cause for this?

overcharging

undercharging

corroded battery terminals

a wet and dirty battery top

Correct! Wrong!

A technician finds that a truck''s four batteries have all frozen solid. Outside temperature is -10oF. Technician A says the problem is that the truck was parked outside at too low a temperature. Technician B says the truck''s battery were allowed to discharge too deeply. Who is right?

Technician A

Technician B

both Technician A and B

neither Technician A nor B

Correct! Wrong!

A truck has experienced a rapid failure of one of its four batteries. The failed battery is much newer than the other three. The three remaining batteries are still usable and pass battery high discharge tests but accept a recharge very slowly.

the one bad battery experienced a random failure

replace the one failed battery

slow charge the failed battery overnight

all four batteries should be replaced

Correct! Wrong!

What instrument is used to measure the specific gravity of electrolyte?

hygrometer

barometer

hydrometer

gravometer

Correct! Wrong!

An Automotive type lead-acid battery with three cells connected in series would produce:

The plate material in a discharged lead acid battery is changed to lead ____________.

Electrolyte in a lead acid battery is made up of _____________ and water.

Positive and negative plate groups are assembled with separators and placed into the case with electrolyte to complete individual.

Dry-charged batteries when manufactured contain:

The capacity of a battery is rated in two ways. They are:

The specific gravity of a fully charged battery at 80oF (27oC) is at least:

During the normal operation of a battery, the electrolyte level may become low. Only _____________ may be added to raise the electrolyte level.

The area below the cells and the bottom of the case is designed to:

The structure of a deep cycle battery differs from that of a conventional lead acid battery because it has:

Selection of a suitable battery should be based on:

The amount of current a fully charged battery is capable of producing is dependent on the:

Approximately how much voltage can be obtained from a single cell of a storage battery?

When removing battery cables, you should first:

As safety precaution to neutralize spilled battery electrolyte, a mechanic should keep on hand a quantity of:

When testing the specific gravity of a battery, the allowable variation between cells should no exceed:

Care must be taken while you work near batteries that are charging because a spark could explode the _____________ gas being given off in the charging process.

Overcharging a battery can cause:

If batteries electrolyte is accidentally splashed in your eyes you must immediately:

The battery top must be kept clean and dry or the accumulated dirt and moisture will:

When performing a load test on a battery you will calculate the amount of load by:

The lead acid storage battery is currently rated by the "Cold Cranking Amps" and the:

What is the purpose of the three minute charge test?

When performing a three minute charge test, the voltage is greater than 15.5 volts after 3 minutes. What would this indicate?

When performing a three minute charge test, what current rating should the charger be set at?

A battery''s output capacity is unaffected by temperature:

Why should the ground terminal of a battery be disconnected first when removing a battery from a vehicle

A frozen battery charges in the same time as a battery at room temperature.

When charging a battery, you should never:

When performing a high discharge load test on a battery, you should load the battery for:

A battery with a specific gravity reading of 1.225 would be about:

When charging batteries what is the temperature that the battery should not exceed?

The group number of a battery (eg. 27 or 4D) indicates the:

These batteries are connected in:

The batteries above would generate:

The batteries shown below are connected in:

The cells within an automotive style battery are normally connected in:

Overchanging a battery can cause:

When disconnecting a battery from a charger you should always:

The battery top must be kept clean and dry or the accumulated dirt and moisture will cause:

The battery''s ________________ is the medium through which the positive and negative plates in the battery cells react.

When performing a battery hydrometer test on a piece of equipment:

An open circuit voltage test is being performed on a battery with a digital multimeter. Technician A says the voltage should add up to 2.1 volts per cell for a total of 12.6 volts. Technician B says that this test is used in place of a hydrometer for maintenance free batteries. Who is right?

Technician A says that a dark hydrometer eye on a maintenance-free battery indicates that the battery must be charged before further testing. Technician B says a green do in the hydrometer eye indicates that the battery is charged and testing may continue. Who is right?

When charging a maintenance -free battery, you observe the built-in hydrometer eye on the top of the battery, is clear or yellowish. This indicates that you should:

A technician checks the records of a unit, finds that the battery top is wet, is using excessive water and frequently needs topping up. What is the most likely cause for this?

A technician finds that a truck''s four batteries have all frozen solid. Outside temperature is -10oF. Technician A says the problem is that the truck was parked outside at too low a temperature. Technician B says the truck''s battery were allowed to discharge too deeply. Who is right?

A truck has experienced a rapid failure of one of its four batteries. The failed battery is much newer than the other three. The three remaining batteries are still usable and pass battery high discharge tests but accept a recharge very slowly.

What instrument is used to measure the specific gravity of electrolyte?

Success!

Heavy-Duty Mechanic - Trucks & Equipment