ASE A6 ELECTRICAL/ELECTRONIC
SYSTEMS PRACTICE EXAM QUESTION
AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
INSTANT DOWNLOAD PDF
1. A battery repeatedly goes dead overnight. Which test is MOST appropriate
to find the cause?
A. Voltage drop test
B. Load test
C. Parasitic draw test
D. Hydrometer test
Answer: C
Rationale: A parasitic draw test measures key-off current draw to identify
excessive electrical loads draining the battery.
2. A fully charged 12-volt battery at rest should measure approximately:
A. 11.5 volts
B. 12.0 volts
C. 12.2 volts
D. 12.6 volts
Answer: D
Rationale: A healthy, fully charged battery typically measures about 12.6
volts with no load.
3. Which component converts AC voltage from the alternator to DC voltage?
A. Voltage regulator
B. Rotor
C. Stator
D. Rectifier (diode trio)
Answer: D
, Rationale: Diodes in the rectifier convert alternating current to direct
current for vehicle use.
4. An alternator warning light is ON and system voltage is low. Which
condition is MOST likely?
A. Shorted battery cell
B. Slipping drive belt
C. Open diode in alternator
D. Excessive parasitic draw
Answer: C
Rationale: An open diode reduces alternator output and often triggers the
warning light.
5. A starter solenoid clicks but the engine does not crank. What is the MOST
likely cause?
A. Weak battery
B. High resistance in starter circuit
C. Faulty ignition switch
D. Shorted armature
Answer: B
Rationale: Clicking indicates solenoid engagement, but high resistance
prevents sufficient current to the starter motor.
6. Which test checks the starter circuit under operating conditions?
A. Continuity test
B. Resistance test
C. Voltage drop test
D. Amperage test
Answer: C
Rationale: Voltage drop testing identifies excessive resistance while the
circuit is loaded.
7. What is the primary function of a fusible link?
A. Increase circuit resistance
B. Protect wiring from overload
C. Regulate voltage
D. Store electrical energy
, Answer: B
Rationale: Fusible links act as slow-blow fuses to protect wiring from
excessive current.
8. A blown fuse is replaced and blows again immediately. What should be
done NEXT?
A. Install a higher-rated fuse
B. Replace the component
C. Check for a short to ground
D. Replace the battery
Answer: C
Rationale: Repeated fuse failure indicates a short circuit that must be
repaired before replacing components.
9. Which unit controls alternator output voltage in most modern vehicles?
A. External regulator
B. Alternator stator
C. PCM/ECM
D. Battery
Answer: C
Rationale: Modern vehicles often use the PCM to control charging system
voltage.
10.A headlamp is dimmer than normal. Which condition is MOST likely?
A. Shorted bulb filament
B. High resistance in ground circuit
C. Overcharged battery
D. Incorrect bulb wattage
Answer: B
Rationale: Poor grounds increase resistance and reduce voltage to the
lamp.
11.What tool is BEST for checking current flow in a circuit without
disconnecting it?
A. Voltmeter
B. Ohmmeter
C. Test light
SYSTEMS PRACTICE EXAM QUESTION
AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
INSTANT DOWNLOAD PDF
1. A battery repeatedly goes dead overnight. Which test is MOST appropriate
to find the cause?
A. Voltage drop test
B. Load test
C. Parasitic draw test
D. Hydrometer test
Answer: C
Rationale: A parasitic draw test measures key-off current draw to identify
excessive electrical loads draining the battery.
2. A fully charged 12-volt battery at rest should measure approximately:
A. 11.5 volts
B. 12.0 volts
C. 12.2 volts
D. 12.6 volts
Answer: D
Rationale: A healthy, fully charged battery typically measures about 12.6
volts with no load.
3. Which component converts AC voltage from the alternator to DC voltage?
A. Voltage regulator
B. Rotor
C. Stator
D. Rectifier (diode trio)
Answer: D
, Rationale: Diodes in the rectifier convert alternating current to direct
current for vehicle use.
4. An alternator warning light is ON and system voltage is low. Which
condition is MOST likely?
A. Shorted battery cell
B. Slipping drive belt
C. Open diode in alternator
D. Excessive parasitic draw
Answer: C
Rationale: An open diode reduces alternator output and often triggers the
warning light.
5. A starter solenoid clicks but the engine does not crank. What is the MOST
likely cause?
A. Weak battery
B. High resistance in starter circuit
C. Faulty ignition switch
D. Shorted armature
Answer: B
Rationale: Clicking indicates solenoid engagement, but high resistance
prevents sufficient current to the starter motor.
6. Which test checks the starter circuit under operating conditions?
A. Continuity test
B. Resistance test
C. Voltage drop test
D. Amperage test
Answer: C
Rationale: Voltage drop testing identifies excessive resistance while the
circuit is loaded.
7. What is the primary function of a fusible link?
A. Increase circuit resistance
B. Protect wiring from overload
C. Regulate voltage
D. Store electrical energy
, Answer: B
Rationale: Fusible links act as slow-blow fuses to protect wiring from
excessive current.
8. A blown fuse is replaced and blows again immediately. What should be
done NEXT?
A. Install a higher-rated fuse
B. Replace the component
C. Check for a short to ground
D. Replace the battery
Answer: C
Rationale: Repeated fuse failure indicates a short circuit that must be
repaired before replacing components.
9. Which unit controls alternator output voltage in most modern vehicles?
A. External regulator
B. Alternator stator
C. PCM/ECM
D. Battery
Answer: C
Rationale: Modern vehicles often use the PCM to control charging system
voltage.
10.A headlamp is dimmer than normal. Which condition is MOST likely?
A. Shorted bulb filament
B. High resistance in ground circuit
C. Overcharged battery
D. Incorrect bulb wattage
Answer: B
Rationale: Poor grounds increase resistance and reduce voltage to the
lamp.
11.What tool is BEST for checking current flow in a circuit without
disconnecting it?
A. Voltmeter
B. Ohmmeter
C. Test light
