TODAYS TECHNICIAN AUTOMOTIVE
ELECTRICITY AND ELECTRONICS ACTUAL
TEST QUESTIONS AND SOLUTIONS
COMPREHENSIVE REVIEW PACKAGE
●● A "blown" fusible link is identified by:
a. A burned-through metal wire in the capsule.
b. A bubbling of the insulator material around the link.
c. All of the above.
d. None of the above
Answer: b. A bubbling of the insulator material around the link.
●● All of the statements concerning circuit components are true,
EXCEPT:
a. A switch can control the on/off operation of a circuit.
b. A switch can direct the flow of current through various circuits.
c. A relay can be an SPDT-type switch.
d. A potentiometer changes voltage drop due to the function of
temperature.
Answer: d. A potentiometer changes voltage drop due to the function of
temperature.
,●● Which of the following statements is/are correct?
a. A zener diode is an excellent component for regulating voltage.
b. A reverse-biased diode lasts longer than a forward-biased diode.
c. The switches of a transistor last longer than those of a relay.
d. Both A and C
Answer: a. A zener diode is an excellent component for regulating
voltage.
●● The light-emitting diode (LED):
a. Emits light when it is reverse-biased.
b. Has a variable turn-on voltage.
c. Has a light color that is defined by the materials used to construct the
diode.
d. Has a turn-on voltage that is usually less than standard diodes.
Answer: c. Has a light color that is defined by the materials used to
construct the diode.
●● Which of the following is the correct statement?
a. An open means there is continuity in the circuit.
b. A short bypasses a portion of the circuit.
c. High-amperage draw indicates an open circuit.
d. High resistance in a circuit increases current flow.
Answer: b. A short bypasses a portion of the circuit.
,●● Transistors:
a. Can be used to control the switching on/off of a circuit.
b. Can be used to amplify voltage.
c. Control high current with low current.
Answer: d. All of the above.
●● All of the following are true, EXCEPT:
a. Voltage drop can cause a lamp in a parallel circuit to burn brighter
than normal.
b. Excessive voltage drop may appear on either the insulated or the
grounded return side of a circuit.
c. Increased resistance in a circuit decreases current.
d. A diode is used as an electrical one-way check valve
Answer: a. Voltage drop can cause a lamp in a parallel circuit to burn
brighter than normal.
●● Which statement is correct concerning diodes?
a. Diodes are aligned to allow current flow in one direction only.
b. Diodes can be used to rectify DC voltages into AC voltages.
c. The stripe is on the anode side of the diode.
d. Normal turn-on voltage of a standard diode is 1.5 volts.
, Answer: a. Diodes are aligned to allow current flow in one direction
only.
●● A capacitor:
a. Consumes electrical power.
b. Stores electrical charges.
c. Both A and B.
d. Neither A nor B.
Answer: b. Stores electrical charges.
●● Circuit defects are being discussed. Technician A says an open can be
only on the ground side of the circuit. Technician B says an unwanted
resistance can result from a corroded connector. Who is correct?
a. A only
b. B only
c. Both A and B
d. Neither A nor B
Answer: b. B only
●● Testing the fuse is being discussed. Technician A says sometimes a
visual inspection of a fuse or fusible link does not reveal that it is open.
Technician B says to use a jumper wire to bypass the fuse in order to test
the circuit. Who is correct?
a. A only
ELECTRICITY AND ELECTRONICS ACTUAL
TEST QUESTIONS AND SOLUTIONS
COMPREHENSIVE REVIEW PACKAGE
●● A "blown" fusible link is identified by:
a. A burned-through metal wire in the capsule.
b. A bubbling of the insulator material around the link.
c. All of the above.
d. None of the above
Answer: b. A bubbling of the insulator material around the link.
●● All of the statements concerning circuit components are true,
EXCEPT:
a. A switch can control the on/off operation of a circuit.
b. A switch can direct the flow of current through various circuits.
c. A relay can be an SPDT-type switch.
d. A potentiometer changes voltage drop due to the function of
temperature.
Answer: d. A potentiometer changes voltage drop due to the function of
temperature.
,●● Which of the following statements is/are correct?
a. A zener diode is an excellent component for regulating voltage.
b. A reverse-biased diode lasts longer than a forward-biased diode.
c. The switches of a transistor last longer than those of a relay.
d. Both A and C
Answer: a. A zener diode is an excellent component for regulating
voltage.
●● The light-emitting diode (LED):
a. Emits light when it is reverse-biased.
b. Has a variable turn-on voltage.
c. Has a light color that is defined by the materials used to construct the
diode.
d. Has a turn-on voltage that is usually less than standard diodes.
Answer: c. Has a light color that is defined by the materials used to
construct the diode.
●● Which of the following is the correct statement?
a. An open means there is continuity in the circuit.
b. A short bypasses a portion of the circuit.
c. High-amperage draw indicates an open circuit.
d. High resistance in a circuit increases current flow.
Answer: b. A short bypasses a portion of the circuit.
,●● Transistors:
a. Can be used to control the switching on/off of a circuit.
b. Can be used to amplify voltage.
c. Control high current with low current.
Answer: d. All of the above.
●● All of the following are true, EXCEPT:
a. Voltage drop can cause a lamp in a parallel circuit to burn brighter
than normal.
b. Excessive voltage drop may appear on either the insulated or the
grounded return side of a circuit.
c. Increased resistance in a circuit decreases current.
d. A diode is used as an electrical one-way check valve
Answer: a. Voltage drop can cause a lamp in a parallel circuit to burn
brighter than normal.
●● Which statement is correct concerning diodes?
a. Diodes are aligned to allow current flow in one direction only.
b. Diodes can be used to rectify DC voltages into AC voltages.
c. The stripe is on the anode side of the diode.
d. Normal turn-on voltage of a standard diode is 1.5 volts.
, Answer: a. Diodes are aligned to allow current flow in one direction
only.
●● A capacitor:
a. Consumes electrical power.
b. Stores electrical charges.
c. Both A and B.
d. Neither A nor B.
Answer: b. Stores electrical charges.
●● Circuit defects are being discussed. Technician A says an open can be
only on the ground side of the circuit. Technician B says an unwanted
resistance can result from a corroded connector. Who is correct?
a. A only
b. B only
c. Both A and B
d. Neither A nor B
Answer: b. B only
●● Testing the fuse is being discussed. Technician A says sometimes a
visual inspection of a fuse or fusible link does not reveal that it is open.
Technician B says to use a jumper wire to bypass the fuse in order to test
the circuit. Who is correct?
a. A only
