Automotive Electrical I Chapter 3 and 4
Questions and Answers 100% Pass
All of the following are true concerning electrical shorts, EXCEPT:
a. A short can add a parallel leg to the circuit, which lowers the entire circuit's
resistance.
b. A short can result in a blown fuse.
c. A short decreases amperage in the circuit.
d. A short bypasses the circuit's intended path. - ✔✔c. A short decreases amperage in
the circuit.
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 - ✔✔b. A bubbling of the insulator material around the link.
All of the statements concerning circuit components are true, EXCEPT:
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,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. - ✔✔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 - ✔✔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. - ✔✔c. Has a light
color that is defined by the materials used to construct the diode.
Which of the following is the correct statement?
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, 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. - ✔✔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. - ✔✔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 - ✔✔a. Voltage drop can cause a
lamp in a parallel circuit to burn brighter than normal.
Which statement is correct concerning diodes?
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Questions and Answers 100% Pass
All of the following are true concerning electrical shorts, EXCEPT:
a. A short can add a parallel leg to the circuit, which lowers the entire circuit's
resistance.
b. A short can result in a blown fuse.
c. A short decreases amperage in the circuit.
d. A short bypasses the circuit's intended path. - ✔✔c. A short decreases amperage in
the circuit.
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 - ✔✔b. A bubbling of the insulator material around the link.
All of the statements concerning circuit components are true, EXCEPT:
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,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. - ✔✔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 - ✔✔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. - ✔✔c. Has a light
color that is defined by the materials used to construct the diode.
Which of the following is the correct statement?
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, 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. - ✔✔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. - ✔✔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 - ✔✔a. Voltage drop can cause a
lamp in a parallel circuit to burn brighter than normal.
Which statement is correct concerning diodes?
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