Week 2, Chapters 2 and 3 - Batteries and Starting Systems Flashcards
Within an automobile battery the ________ plate LOSES electrons and the ________ plate GAINS electrons.
Positive, Negative
Battery electrolyte is a mixture of water and ________.
Sulfuric Acid
The plates of a discharged battery are two ________ metals in the presence of ________.
Similar, Water
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. It can be recharged
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
d. The negative plates change back to lead sulfate
Each cell of an automobile battery can produce about ________ volts.
2.1
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
c. 1.265 to 1.280
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
c. 25 percent
Batteries are rated in terms of:
Cranking performance at 0ºF
Maintenance-free batteries use ________ lead alloys.
non-antimony
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. 30 seconds at 0ºF
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.
c. It may have a lower rating than the original battery.
The principal cause of battery water loss is?
Evaporation due to heat of the charging current
True or False:
Maintenance-free batteries produce greater voltage than vent-cap batteries.
False
The grid material used in a maintenance-free battery is alloyed with ________.
Calcium
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
d. Require infrequent water addition
Recombinant batteries are:
a. Completely sealed
b. Vented to release gassing
c. Rebuilt units
d. Able to produce a higher cell voltage
a. Completely sealed
Which parts of a battery hold the electrical charge?
Positive and Negative plates
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?
Technician A only
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
d. Providing voltage for the injection solenoid when running
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
b. an OCP thermostat
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. Magnetic switch
All of these are part of a starter motor EXCEPT:
a. An armature
b. A commutator
c. Field coils
d. A regulator
d. A regulator
Battery, magnetic switch, starter motor and large cables make up which type of circuit?
A starter circuit
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
d. The starter motor
The ignition switch will NOT remain in which position?
Start
The starting safety switch is also called a ________.
Neutral-Start switch
Safety switches are commonly used on which type of automobile?
Domestic automobiles
Starting safety switches used with manual transmissions are usually:
a. Electrical
b. Mechanical
c. Floor-mounted
d. Column-mounted
a. Electrical
True or False:
Solenoids send electric signals to the control module and have no moving parts.
False
Starter motors usually have how many pole shoes?
Four
The rotational force of a starter motor is:
a. Polorized
b. Rectified
c. Torque
d. Current
c. Torque
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
d. It is not often used as a starting motor
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. Adjacent
What is the ratio between the number of teeth on the flywheel and the motor pinion gear?
20:1
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
b. Protects the starter motor from spinning too rapidly
A starting motor must have ________ number of brushes as pulls.
the same
A solenoid uses two coils. What are their windings called?
Pull-in and hold-in
True or False:
On a reduction drive, the small gear driven by the armature is permanentlly meshed with a larger gear.
True
A planetary drive starter uses:
a. Permanant magnets
b. Field coils
c. Both A and B
d. Neither A or B
a. Permanant magents
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. Field circuit testing
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
d. It is often used as a starting motor
