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OTC - AD Electrical and Electronic Systems > Week 2, Chapters 2 and 3 - Batteries and Starting Systems > Flashcards

Week 2, Chapters 2 and 3 - Batteries and Starting Systems Flashcards

1
Q

Within an automobile battery the ________ plate LOSES electrons and the ________ plate GAINS electrons.

A

Positive, Negative

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2
Q

Battery electrolyte is a mixture of water and ________.

A

Sulfuric Acid

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3
Q

The plates of a discharged battery are two ________ metals in the presence of ________.

A

Similar, Water

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4
Q

Which of the following is TRUE about a “secondary” battery?

a. It can be recharged
b. Neither the electrolyte nor the metals change their atomic structure
c. One of the metals is totally destroyed by the action of the battery
d. The action of the battery cannot be reversed

A

a. It can be recharged

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5
Q

Which of the following does NOT occur during battery recharging?

a. The lead sulfate on the plates gradually decomposes
b. The sulfate is re disposed in the water
c. The electrolyte is returned to full strength
d. The negative plates change back to lead sulfate

A

d. The negative plates change back to lead sulfate

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6
Q

Each cell of an automobile battery can produce about ________ volts.

A

2.1

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7
Q

At 80ºF, the correct specific gravity of electrolyte in a fully charged battery is:

a. 1.200 to 1.225
b. 1.225 to 1.265
c. 1.265 to 1.280
d. 1.280 to 1.300

A

c. 1.265 to 1.280

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8
Q

A specific gravity of 1.170 to 1.190 at 80ºF indicates that a battery’s state-of-charge is about:

a. 75 percent
b. 50 percent
c. 25 percent
d. 10 percent

A

c. 25 percent

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9
Q

Batteries are rated in terms of:

A

Cranking performance at 0ºF

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10
Q

Maintenance-free batteries use ________ lead alloys.

A

non-antimony

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11
Q

An automobile battery with a cranking performance rating of 380 can deliver 380 amps for:

a. 30 seconds at 0ºF
b. 60 seconds at 0ºF
c. 90 seconds at 32ºF
d. 90 seconds at 0ºF

A

a. 30 seconds at 0ºF

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12
Q

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 that the original battery.
c. It may have a lower rating than the original battery.
d. It should be selected according to an application chart.

A

c. It may have a lower rating than the original battery.

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13
Q

The principal cause of battery water loss is?

A

Evaporation due to heat of the charging current

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14
Q

True or False:

Maintenance-free batteries produce greater voltage than vent-cap batteries.

A

False

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15
Q

The grid material used in a maintenance-free battery is alloyed with ________.

A

Calcium

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16
Q

Low-maintenance batteries:

a. Have no cell caps
b. Have a higher proportion of sulfuric acid
c. Have no gas-pressure vents
d. Require infrequent water addition

A

d. Require infrequent water addition

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17
Q

Recombinant batteries are:

a. Completely sealed
b. Vented to release gassing
c. Rebuilt units
d. Able to produce a higher cell voltage

A

a. Completely sealed

18
Q

Which parts of a battery hold the electrical charge?

A

Positive and Negative plates

19
Q

Technician A says that the battery term “ampere-hour” refers to stored charge capacity of a battery. Technician B says that a 75-ampere-hour charge applied to a 200-ampere-hour battery should turn the charge indicator green. Which Technician is correct?

A

Technician A only

20
Q

During normal operation, the battery performs all of the following functions, EXCEPT:

a. Providing electrical energy for the accessories when the engine is not running
b. Acting as voltage storage for the electrical system
c. Serving as the voltage source for starting
d. Providing voltage for the injection solenoid when running

A

d. Providing voltage for the injection solenoid when running

21
Q

All of these are part of the control circuit EXCEPT:

a. a starting switch
b. an OCP thermostat
c. a starting safety switch
d. a magnetic switch

A

b. an OCP thermostat

22
Q

Which of the following is a component of a starting circuit:

a. Magnetic switch
b. Ballast resistor
c. Voltage regulator
d. Powertrain control module (PCM)

A

a. Magnetic switch

23
Q

All of these are part of a starter motor EXCEPT:

a. An armature
b. A commutator
c. Field coils
d. A regulator

A

d. A regulator

24
Q

Battery, magnetic switch, starter motor and large cables make up which type of circuit?

A

A starter circuit

25
Q

Which of the following is NOT part of the starter control circuit?

a. The ignition switch
b. The starting safety switch
c. The starter relay
d. The starter motor

A

d. The starter motor

26
Q

The ignition switch will NOT remain in which position?

A

Start

27
Q

The starting safety switch is also called a ________.

A

Neutral-Start switch

28
Q

Safety switches are commonly used on which type of automobile?

A

Domestic automobiles

29
Q

Starting safety switches used with manual transmissions are usually:

a. Electrical
b. Mechanical
c. Floor-mounted
d. Column-mounted

A

a. Electrical

30
Q

True or False:

Solenoids send electric signals to the control module and have no moving parts.

A

False

31
Q

Starter motors usually have how many pole shoes?

A

Four

32
Q

The rotational force of a starter motor is:

a. Polorized
b. Rectified
c. Torque
d. Current

A

c. Torque

33
Q

Which of the following is TRUE of a shunt motor?

a. It has high initial torque
b. It operates at variable speed
c. It has only one path for current flow
d. It is not often used as a starting motor

A

d. It is not often used as a starting motor

34
Q

In a lap-wound motor armature, the two ends of each conductor are attached to commutator segments that are:

a. Adjacent
b. 45º apart
c. 90º apart
d. 180º apart

A

a. Adjacent

35
Q

What is the ratio between the number of teeth on the flywheel and the motor pinion gear?

A

20:1

36
Q

The overrunning clutch accomplishes which of the following:

a. Seperate the starter motor from the starter solenoid
b. Protects the starter motor from spinning too rapidly
c. Let’s the starter motor rotate in either direction
d. Brings the starter motor into contact with the igntion circuit

A

b. Protects the starter motor from spinning too rapidly

37
Q

A starting motor must have ________ number of brushes as pulls.

A

the same

38
Q

A solenoid uses two coils. What are their windings called?

A

Pull-in and hold-in

39
Q

True or False:

On a reduction drive, the small gear driven by the armature is permanentlly meshed with a larger gear.

A

True

40
Q

A planetary drive starter uses:

a. Permanant magnets
b. Field coils
c. Both A and B
d. Neither A or B

A

a. Permanant magents

41
Q

Which of the following is NOT required of a permanant magnet starter:

a. Field circuit testing
b. Armature testing
c. Commutator testing
d. Brush testing

A

a. Field circuit testing

42
Q

Which of the following is true of a compound motor?

a. It has low initial torque
b. It operates at variable speeds
c. It has only one path for current flow
d. It is often used as a starting motor

A

d. It is often used as a starting motor

OTC - AD Electrical and Electronic Systems (9 decks)

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