ASE A6 Test Prep (Electrical & Electronic Systems) Questions
With Answers Graded A.
A technician connects one lead of a DMM (digital multimeter) to the positive (+) terminal of
a battery and the other meter lead to the "B" terminal of the starter solenoid and then
cranks the engine. During cranking, the voltmeter displays a reading of 878 mV.
Technician A says this reading indicates the positive battery cable has very high
resistance.
Technician B says this reading indicates that the starter armature is defective.
Who is right?
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B - Correct answer-Technician A only
When performing a load test on a battery, a technician finds that the battery voltage drops
below specifications. Which of the following is the MOST likely repair?
a. Recharge the battery and return it to service
b. Recharge the battery and retest it
c. Replace the battery
d. Replace the voltage regulator - Correct answer-Replace the battery
Two technicians are describing battery charging.
Technician A says to remove the surface charge from a recently charged battery and
apply a 300-ampere load across the adapters for 15 seconds.
Technician B says to remove the surface charge from batteries, which have been in
storage.
,Who is right?
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B - Correct answer-Technician A only
A technician connects one lead of a DMM (digital multimeter) to the positive (+) terminal of
a battery and the other meter lead to the "B" terminal of the starter solenoid and then
cranks the engine. During cranking, the voltmeter displays a reading of 878 mV.
Technician A says this reading indicates the positive battery cable has very high
resistance.
Technician B says this reading indicates that the starter armature is defective.
Who is right?
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B - Correct answer-Technician A only
Technician A says proper starter operation depends on the battery being at a 95% charge
and battery cables being of the correct size (gauge) and having no more than 0.8-volt
drop.
Technician B says voltage-drop testing includes cranking the engine, measuring the drop
in voltage from the battery to the starter, and measuring the drop in voltage from the
negative terminal of the battery to the engine block.
Who is right?
Technician A only
,Technician B only
Both Technicians A and B
Neither Technician A nor B - Correct answer-Technician B only
Which of the following could cause the starter to make a whining noise when engaged?
a. Defective starter drive
b. Defective solenoid
c. Open pull-in winding
d. Worn armature commutator - Correct answer-Defective starter drive
Two bulbs are connected in parallel to a 12 volt battery. Another bulb is added in parallel.
Technician A says that the third bulb will be dimmer than the other two bulbs due to
reduced current flow through the filament of the bulb.
Technician B says that the amount of current flowing from the battery will decrease due to
the extra load.
Who is right?
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B - Correct answer-Neither Technician A nor B
Two bulbs are connected in parallel to a 12 volt battery. One bulb has a resistance of 6
ohms and the other has a resistance of 2 ohms.
Technician A says that only the 2 ohm bulb will light because all the current will flow
through the 6 ohms bulb.
Technician B says that the 6 ohm bulb will be dimmer than the 2 ohm bulb.
Who is right?
Technician A only
Technician B only
, Both Technicians A and B
Neither Technician A nor B - Correct answer-Technician B only
What causes a fuse to blow ?
a. A sudden decrease in current through the circuit
b. An increase in current through the circuit
c. A decrease in circuit resistance
d. Both B & C - Correct answer-Both B & C
Many ground straps are uninsulated and braided because __________ ?
a. They are less expensive than conventional wire
b. They are more flexible to allow movement of the engine without breaking the wire
c. They dampen Radio-Frequency Interference (RFI)
d. Both B & C - Correct answer-Both B & C
Technician A says that a test light should light on both test points of the fuse if it is ok.
Technician B says that the fuse is defective if a test light only lights on one side of the fuse.
Who is right?
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B - Correct answer-Both Technicians A and B
Which statement is true about fuse ratings ?
a. The fuse rating should be less than the maximum current for the circuit.
b. The fuse rating should be higher than the normal current for the circuit.
c. 80% of the fuse rating should equal the current in the circuit.
With Answers Graded A.
A technician connects one lead of a DMM (digital multimeter) to the positive (+) terminal of
a battery and the other meter lead to the "B" terminal of the starter solenoid and then
cranks the engine. During cranking, the voltmeter displays a reading of 878 mV.
Technician A says this reading indicates the positive battery cable has very high
resistance.
Technician B says this reading indicates that the starter armature is defective.
Who is right?
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B - Correct answer-Technician A only
When performing a load test on a battery, a technician finds that the battery voltage drops
below specifications. Which of the following is the MOST likely repair?
a. Recharge the battery and return it to service
b. Recharge the battery and retest it
c. Replace the battery
d. Replace the voltage regulator - Correct answer-Replace the battery
Two technicians are describing battery charging.
Technician A says to remove the surface charge from a recently charged battery and
apply a 300-ampere load across the adapters for 15 seconds.
Technician B says to remove the surface charge from batteries, which have been in
storage.
,Who is right?
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B - Correct answer-Technician A only
A technician connects one lead of a DMM (digital multimeter) to the positive (+) terminal of
a battery and the other meter lead to the "B" terminal of the starter solenoid and then
cranks the engine. During cranking, the voltmeter displays a reading of 878 mV.
Technician A says this reading indicates the positive battery cable has very high
resistance.
Technician B says this reading indicates that the starter armature is defective.
Who is right?
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B - Correct answer-Technician A only
Technician A says proper starter operation depends on the battery being at a 95% charge
and battery cables being of the correct size (gauge) and having no more than 0.8-volt
drop.
Technician B says voltage-drop testing includes cranking the engine, measuring the drop
in voltage from the battery to the starter, and measuring the drop in voltage from the
negative terminal of the battery to the engine block.
Who is right?
Technician A only
,Technician B only
Both Technicians A and B
Neither Technician A nor B - Correct answer-Technician B only
Which of the following could cause the starter to make a whining noise when engaged?
a. Defective starter drive
b. Defective solenoid
c. Open pull-in winding
d. Worn armature commutator - Correct answer-Defective starter drive
Two bulbs are connected in parallel to a 12 volt battery. Another bulb is added in parallel.
Technician A says that the third bulb will be dimmer than the other two bulbs due to
reduced current flow through the filament of the bulb.
Technician B says that the amount of current flowing from the battery will decrease due to
the extra load.
Who is right?
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B - Correct answer-Neither Technician A nor B
Two bulbs are connected in parallel to a 12 volt battery. One bulb has a resistance of 6
ohms and the other has a resistance of 2 ohms.
Technician A says that only the 2 ohm bulb will light because all the current will flow
through the 6 ohms bulb.
Technician B says that the 6 ohm bulb will be dimmer than the 2 ohm bulb.
Who is right?
Technician A only
Technician B only
, Both Technicians A and B
Neither Technician A nor B - Correct answer-Technician B only
What causes a fuse to blow ?
a. A sudden decrease in current through the circuit
b. An increase in current through the circuit
c. A decrease in circuit resistance
d. Both B & C - Correct answer-Both B & C
Many ground straps are uninsulated and braided because __________ ?
a. They are less expensive than conventional wire
b. They are more flexible to allow movement of the engine without breaking the wire
c. They dampen Radio-Frequency Interference (RFI)
d. Both B & C - Correct answer-Both B & C
Technician A says that a test light should light on both test points of the fuse if it is ok.
Technician B says that the fuse is defective if a test light only lights on one side of the fuse.
Who is right?
Technician A only
Technician B only
Both Technicians A and B
Neither Technician A nor B - Correct answer-Both Technicians A and B
Which statement is true about fuse ratings ?
a. The fuse rating should be less than the maximum current for the circuit.
b. The fuse rating should be higher than the normal current for the circuit.
c. 80% of the fuse rating should equal the current in the circuit.
