AST Level 1 GAC I Learning Path
What is the terminal voltage of a fully charged 12-volt battery? - CORRECT ANSWER-
12.6
When charging a lead-acid (flooded-type) battery, ________________. - CORRECT
ANSWER-1.The battery temperature should not exceed 125°F (hot to the touch)
2.The initial charging rate should be about 35 amperes for 30 minutes
3.The battery may not accept a charge for several hours, yet still be a good
(serviceable) battery
Technician A says overcharging can overheat and damage the battery. Technician B
says overcharging causes gassing that can cause the battery to lose water. Who is
correct? - CORRECT ANSWER-
Most carbon resistors indicate their electrical resistance by - CORRECT ANSWER-
Color coded markings
A PTC circuit protector prevents excessive current flow in a circuit by __________. -
CORRECT ANSWER-Changing to a very high resistance
Which battery rating is expressed in minutes? - CORRECT ANSWER-Reserve
capacity
Lead acid type batteries cannot be recycled. - CORRECT ANSWER-FALUE
technician A uses a voltmeter to test the open circuit voltage of a battery. Technician B
uses the results of an open circuit voltage test to determine the battery's state of
charge. Who is correct? - CORRECT ANSWER-BOTH A AND B
Gassing is the conversion of the battery water into helium and nitrogen gas. -
CORRECT ANSWER-False
Metric wire size is measured in units of ________. - CORRECT ANSWER-Square
millimeters
Which of these is also known as electrical potential? - CORRECT ANSWER-Volts
The total circuit resistance of a parallel circuit is always ________ the lowest
resistance present in any branch of the circuit. - CORRECT ANSWER-Less than
What colour is used to identify air bag system wiring? - CORRECT ANSWER-yellow
What should you do before splicing wires together? - CORRECT ANSWER-make sure
the ends of the wire are clean
Which statements are true about wire, terminals, and connectors? - CORRECT
ANSWER-A connector is usually a plastic piece where terminals lock in
, When testing resistance and continuity, a DMM must be used with power applied. -
CORRECT ANSWER-False
A scan tool is connected through a DLC. This acronym stands for: - CORRECT
ANSWER-Data Link Connector.
When testing a relay using an ohmmeter, which two terminals should be touched to
measure the coil resistance? - CORRECT ANSWER-86 and 85
Transmission diagnosis is being discussed. Technician A says that a scan tool can be
used in place of a voltmeter. Technician B says that a scan tool is used to
communicate with the vehicle's ECM. Which technician is correct? - CORRECT
ANSWER-Technician B only
A factory or factory-level scan tool can ________. - CORRECT ANSWER-1.,Read
DTCs
2. Command shifts
The electrolyte in a fully charged lead acid type battery is a solution of _____. -
CORRECT ANSWER-36 percent sulfuric acid and 64 percent water
Caution is advised when working around lead-acid batteries because the battery may
contain _____ gas. - CORRECT ANSWER-Hydrogen
In an incomplete circuit ___________. - CORRECT ANSWER-No current will flow
In a schematic, a wire is labeled "0.8 BLK/WHT." This wire is ________. - CORRECT
ANSWER-White with a black stripe
Two technicians are discussing finding a short to ground using a test light. Technician
A says that the test light, connected in place of the fuse, will light when the circuit that
has the short is disconnected. Technician B says that the test light should be
connected to the positive (+) and negative (-) terminals of a battery during this test.
Which technician is correct? - CORRECT ANSWER-Neither technician
When testing a relay using an ohmmeter, which two terminals should be touched to
measure the coil resistance - CORRECT ANSWER-86 and 85
Voltage drop is a better measurement of resistance than testing static resistance
because - CORRECT ANSWER-1.Current flow creates heat which adds to circuit
resistance
2.The resistance specification for the component is not required for diagnosis
Which battery is also known as the "Zebra" battery? - CORRECT ANSWER-sodium
nickel chloride
Battery ratings are being discussed. Technician A says the reserve capacity rating is a
measure of the battery's ability to operate the lights and electrical system in the event
of a generator failure. Technician B says the cold-cranking amps rating is a measure
of the battery's ability to provide current for the starter. Who is correct? - CORRECT
ANSWER-both A and B
What is the terminal voltage of a fully charged 12-volt battery? - CORRECT ANSWER-
12.6
When charging a lead-acid (flooded-type) battery, ________________. - CORRECT
ANSWER-1.The battery temperature should not exceed 125°F (hot to the touch)
2.The initial charging rate should be about 35 amperes for 30 minutes
3.The battery may not accept a charge for several hours, yet still be a good
(serviceable) battery
Technician A says overcharging can overheat and damage the battery. Technician B
says overcharging causes gassing that can cause the battery to lose water. Who is
correct? - CORRECT ANSWER-
Most carbon resistors indicate their electrical resistance by - CORRECT ANSWER-
Color coded markings
A PTC circuit protector prevents excessive current flow in a circuit by __________. -
CORRECT ANSWER-Changing to a very high resistance
Which battery rating is expressed in minutes? - CORRECT ANSWER-Reserve
capacity
Lead acid type batteries cannot be recycled. - CORRECT ANSWER-FALUE
technician A uses a voltmeter to test the open circuit voltage of a battery. Technician B
uses the results of an open circuit voltage test to determine the battery's state of
charge. Who is correct? - CORRECT ANSWER-BOTH A AND B
Gassing is the conversion of the battery water into helium and nitrogen gas. -
CORRECT ANSWER-False
Metric wire size is measured in units of ________. - CORRECT ANSWER-Square
millimeters
Which of these is also known as electrical potential? - CORRECT ANSWER-Volts
The total circuit resistance of a parallel circuit is always ________ the lowest
resistance present in any branch of the circuit. - CORRECT ANSWER-Less than
What colour is used to identify air bag system wiring? - CORRECT ANSWER-yellow
What should you do before splicing wires together? - CORRECT ANSWER-make sure
the ends of the wire are clean
Which statements are true about wire, terminals, and connectors? - CORRECT
ANSWER-A connector is usually a plastic piece where terminals lock in
, When testing resistance and continuity, a DMM must be used with power applied. -
CORRECT ANSWER-False
A scan tool is connected through a DLC. This acronym stands for: - CORRECT
ANSWER-Data Link Connector.
When testing a relay using an ohmmeter, which two terminals should be touched to
measure the coil resistance? - CORRECT ANSWER-86 and 85
Transmission diagnosis is being discussed. Technician A says that a scan tool can be
used in place of a voltmeter. Technician B says that a scan tool is used to
communicate with the vehicle's ECM. Which technician is correct? - CORRECT
ANSWER-Technician B only
A factory or factory-level scan tool can ________. - CORRECT ANSWER-1.,Read
DTCs
2. Command shifts
The electrolyte in a fully charged lead acid type battery is a solution of _____. -
CORRECT ANSWER-36 percent sulfuric acid and 64 percent water
Caution is advised when working around lead-acid batteries because the battery may
contain _____ gas. - CORRECT ANSWER-Hydrogen
In an incomplete circuit ___________. - CORRECT ANSWER-No current will flow
In a schematic, a wire is labeled "0.8 BLK/WHT." This wire is ________. - CORRECT
ANSWER-White with a black stripe
Two technicians are discussing finding a short to ground using a test light. Technician
A says that the test light, connected in place of the fuse, will light when the circuit that
has the short is disconnected. Technician B says that the test light should be
connected to the positive (+) and negative (-) terminals of a battery during this test.
Which technician is correct? - CORRECT ANSWER-Neither technician
When testing a relay using an ohmmeter, which two terminals should be touched to
measure the coil resistance - CORRECT ANSWER-86 and 85
Voltage drop is a better measurement of resistance than testing static resistance
because - CORRECT ANSWER-1.Current flow creates heat which adds to circuit
resistance
2.The resistance specification for the component is not required for diagnosis
Which battery is also known as the "Zebra" battery? - CORRECT ANSWER-sodium
nickel chloride
Battery ratings are being discussed. Technician A says the reserve capacity rating is a
measure of the battery's ability to operate the lights and electrical system in the event
of a generator failure. Technician B says the cold-cranking amps rating is a measure
of the battery's ability to provide current for the starter. Who is correct? - CORRECT
ANSWER-both A and B
