AUTO TECH ELECTRICAL SECTION EXAM 3
STUDY GUIDE 2026 QUESTIONS WITH
ANSWERS GRADED A+
◉ When replacing a starter motor, which of the following should be
done first? Answer: Disconnect the negative battery cable from the
battery.
◉ An electric motor begins to turn when the _______________
becomes an electromagnet. Answer: Armature
◉ The brushes in an electric motor ride on a set of copper contact
segments called the: Answer: Commutator
◉ On most starter-mounted solenoids, what is the role of the solenoid?
Answer: Engages the starter drive pinion with the ring gear.
Completes the high current circuit to the starter motor.
Both A and B.
◉ If the starter motor spins but the engine doesn't turn, the problem
could be: Answer: A defective one-way clutch on the starter drive.
◉ An open in the hold-in winding of a solenoid would most likely
cause: Answer: The solenoid to move in and out, or chatter.
, ◉ When performing a starter current draw test, lower-than-normal
current could be caused by: Answer: Excessive resistance in the positive
battery cable.
◉ When attempting to measure voltage with a DVOM, a negative
voltage is displayed. Technician A says that the current is flowing
backwards in this circuit. Technician B says that the leads on the DVOM
are hooked up backwards. Who is correct? Answer: Technician B
◉ A vehicle is being diagnosed for dimmer-than-normal headlamps.
Voltage drop measured across one of the bulbs is 10.2 volts. Technician
A says that there may be some excessive resistance in the circuit
somewhere. Technician B says the battery may not be fully charged.
Who is correct? Answer: Both A and B
◉ Which of the following statements about current is correct? Answer:
Direct current is used for most electrical systems in the automobile.
◉ When a car's engine is running, the source of electricity for all of the
electrical circuits is the _____________, at a voltage of
______________. Answer: generator; 13.5-15.0 volts
◉ When a car's engine is NOT running, the source of electricity for all
of the electrical circuits is the _____________, at a voltage of
______________. Answer: battery; 12.6 volts
STUDY GUIDE 2026 QUESTIONS WITH
ANSWERS GRADED A+
◉ When replacing a starter motor, which of the following should be
done first? Answer: Disconnect the negative battery cable from the
battery.
◉ An electric motor begins to turn when the _______________
becomes an electromagnet. Answer: Armature
◉ The brushes in an electric motor ride on a set of copper contact
segments called the: Answer: Commutator
◉ On most starter-mounted solenoids, what is the role of the solenoid?
Answer: Engages the starter drive pinion with the ring gear.
Completes the high current circuit to the starter motor.
Both A and B.
◉ If the starter motor spins but the engine doesn't turn, the problem
could be: Answer: A defective one-way clutch on the starter drive.
◉ An open in the hold-in winding of a solenoid would most likely
cause: Answer: The solenoid to move in and out, or chatter.
, ◉ When performing a starter current draw test, lower-than-normal
current could be caused by: Answer: Excessive resistance in the positive
battery cable.
◉ When attempting to measure voltage with a DVOM, a negative
voltage is displayed. Technician A says that the current is flowing
backwards in this circuit. Technician B says that the leads on the DVOM
are hooked up backwards. Who is correct? Answer: Technician B
◉ A vehicle is being diagnosed for dimmer-than-normal headlamps.
Voltage drop measured across one of the bulbs is 10.2 volts. Technician
A says that there may be some excessive resistance in the circuit
somewhere. Technician B says the battery may not be fully charged.
Who is correct? Answer: Both A and B
◉ Which of the following statements about current is correct? Answer:
Direct current is used for most electrical systems in the automobile.
◉ When a car's engine is running, the source of electricity for all of the
electrical circuits is the _____________, at a voltage of
______________. Answer: generator; 13.5-15.0 volts
◉ When a car's engine is NOT running, the source of electricity for all
of the electrical circuits is the _____________, at a voltage of
______________. Answer: battery; 12.6 volts
