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WorksheetsElectircal Systems
Total questions: 52
Worksheet time: 18mins
Name
Class
Date
1.
Charging batteries can give off hydrogen and oxygen.
a)
True
b)
False
2.
Charging batteries can give off hydrogen and oxygen.
a)
True
b)
False
3.
With 10.6 volts during load testing, a new battery is needed
a)
True
b)
False
4.
Adding water to a low-maintenance battery can be an indication of a higher-than-specified charging voltage
a)
True
b)
False
5.
Battery efficiency is reduced as the temperature gets lower than 82 degrees
a)
True
b)
False
6.
Sulfating is increased if a battery is left in a discharged state for extended periods of time.
a)
True
b)
False
7.
An open circuit voltage in the 12.6-volt range indicates an overcharged battery.
a)
True
b)
False
8.
A three-minute charge test can be used instead of a hydrometer to test a cell's state of charge.
a)
True
b)
False
9.
Regenerative braking is a method of capturing the vehicles thermal energy in the batteries while it slows down.
a)
True
b)
False
10.
Vehicles equipped with manual transmissions should have a clutch safety switch
a)
True
b)
False
11.
If an automatic transmission vehicle will start in any gear, the neutral safety switch is probably at fault.
a)
True
b)
False
12.
There should be a two-minute wait between cranking attempts
a)
True
b)
False
13.
Slower-than-normal cranking speed will result in lower-than-normal amperage
a)
True
b)
False
14.
Slower-than-normal cranking speed will result in lower-than-normal amperage
a)
True
b)
False
15.
A starter should draw less current once it is spinning
a)
True
b)
False
16.
A tighter-than-normal engine will decrease the amperage draw of the system.
a)
True
b)
False
17.
Slower-than-normal speed and higher-than-normal cranking amperage is usually the result of internal starter problems
a)
True
b)
False
18.
A neutral safety switch will have continuity through it when the transmission is in drive or reverse.
a)
True
b)
False
19.
Voltage regulation is controlled by the PCM on many vehicles today
a)
True
b)
False
20.
Any sensing wire voltage drops will increase the system voltage by the amount of the drop.
a)
True
b)
False
21.
The battery cable should be disconnected before removing any electrical unit.
a)
True
b)
False
22.
Less than rated output during full fielding indicates need for a new voltage regulator.
a)
True
b)
False
23.
Sensing voltage is the voltage that tells the regulator just how much field current is necessary
a)
True
b)
False
24.
The AC generator's maximum available output increases as rotor speed increases
a)
True
b)
False
25.
Excessive output can be caused by a faulty battery.
a)
True
b)
False
26.
The hybrid AC generator design consists of a rotor assembly with both permanent magnet and wire wound sections.
a)
True
b)
False
27.
A scan tool can be used to help diagnose charging system problems on some vehicles.
a)
True
b)
False
28.
Technician A says the current capacity rating of a battery depends on the types of materials used in the construction of the battery. Technician B says the amount of electrical energy that a battery is capable of producing depends on the size, weight, and active area of the plates. Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
29.
Technician A says during a load test, the battery voltage must not fall below 9.6 volts. Technician B says the load applied should be half the cold cranking amp rating. Who is connect?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
30.
At 80 degrees F, what is the correct specific gravity of electrolyte in a fully charged battery?
a)
1.200
b)
1.220
c)
1.265
d)
1.290
31.
How may batteries be rated?
a)
Ampere-hours
b)
Reserve capacity
c)
Cold Cranking Amps
d)
Any of the above
32.
Which of the following statements is NOT true of a replacement battery?
a)
It may have the same rating as the original 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
33.
How long can an automotive battery with a cold cranking rating of 380 deliver 380 amperes?
a)
30 seconds at 0° F
b)
60 seconds at 0° F
c)
90 seconds at 32° F
d)
90 seconds at 0° F
34.
How many volts can each cell of an automobile battery produce?
a)
1.2 volts
b)
2.1 volts
c)
4.2 volts
d)
6 volts
35.
What is the principle cause of battery water loss?
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 charging current
36.
How much of a change in specific gravity readings does temperature compensation involve for every 10 degrees?
a)
0.004
b)
0.040
c)
0.400
d)
4.000
37.
Why should specific gravity readings be temperature compensated?
a)
They are a more accurate indicator of the actual state of charge
b)
Electrolyte gets thicker as it gets warmer than 80° F
c)
Hydrometers do not work on cold batteries
d)
None of the above
38.
What should be done to the system when a 0.7 volt drop is observed between the battery positive terminal and the starter solenoid with the engine cranking?
a)
Install a larger battery
b)
Nothing, it is acceptable
c)
Replace the cable or component between the voltmeter leads
d)
None of the above
39.
Which of the following statements is true of solenoids?
a)
They use the electromagnetic field of a coil to pull a plunger into the coil.
b)
They are generally used to engage the starter motor with the engine flywheel.
c)
They operate with a movable plunger and usually do a mechanical job.
d)
All of the above
40.
The starting safety switch is also called a
a)
remote-operated switch
b)
manual-override switch
c)
neutral-start switch
d)
single-pole, double-throw switch
41.
Technician A says the commutator is a series of conducting segments located around one end of the armature that come in contact with the brushes. Technician B says the armature is the stationary component of the motor that consists of a conductor wound around a pole shoe. Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
42.
A 100 amp AC generator produces 105 amperes all the time. Full fielding it produces 105 amperes also. What does this indicate?
a)
The regulator is running the AC generator full field all the time
b)
The AC generator is faulty
c)
The output wire has excessive resistance
d)
The drive belt is slipping
43.
A ground circuit voltage drop test taken on a vehicle's alternator indicates a 0.965V drop. Technician A says this could cause a problem in the alternator's field current. Technician B says this could affect the output circuit of the alternator. Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
44.
Why should an AC generator never be operated open-circuit?
a)
It could overcharge the battery
b)
It could burn out electronic components
c)
It could ruin the AC generator stator
d)
None of the above
45.
The charging system of a vehicle is producing 100 amps and 12.4 volts at 1500 RPM with all electrical accessories turned "on." The charging system output specification for this vehicle is 110 amps. Technician A says the alternator needs to be replaced. Technician B says the electrical demand of the vehicle may be exceeding the capacity of the charging system. Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
46.
How many output diodes does an AC generator stator with three windings usually have?
a)
Three
b)
Four
c)
Five
d)
Six
47.
Technician A says when testing the charging system, the state of charge of the battery is not a concern. Technician B says the battery must be checked first before testing the charging system. Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
48.
Technician A says a scan tool may be used to full field some alternators. Technician B says a field current draw test indicates if there is current available to the field windings. Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
49.
Technician A says when testing, the ground side voltage drop should be less than 0.2 volt. Technician B says the total insulated system drops should be less than 0.7 volt. Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
50.
Technician A says the regulator is the cause if full fielding with the regulator bypassed produces lower than specified output. Technician B says a full field test will isolate the problem if it is in the AC generator or the regulator. Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
51.
Technician A says a diode should be tested with a DMM that has a diode test setting. Technician B says when testing a diode with a DMM that has a diode test setting the meter should read approximately 0.6V in one direction and 0 when the leads are reversed. Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
52.
In a full hybrid HEV, which component is responsible for recharging the 12 volt battery from the 300 volt direct current system?
a)
The battery control module
b)
The belt driven generator.
c)
The DC/DC converter.
d)
The LV control module.
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