Question 1

Most ____ use printed circuit boards as circuit conductors.
A) instrument panels
B) bulkhead connectors
C) ground straps
D) air bag applications

Accepted Answer

Instrument panels typically involve electronic circuits that require printed circuit boards for their compactness and ease of assembly. Bulkhead connectors, ground straps, and air bag applications do not typically involve the use of printed circuit boards.

Question 2

__________ __________ __________ are used to prevent damage to the wiring by maintaining proper wire routing and retention.
A) Connector protective devises
B) Connector terminal locks
C) Printed circuit boards
D) Wiring protective devices

Accepted Answer

Wiring protective devices are specifically designed to prevent damage to the wiring through proper wire routing and retention. Connector protective devices and connector terminal locks are used to secure and protect individual connectors, but would not necessarily prevent damage to the wiring itself. Printed circuit boards are a separate component of electronic systems and do not typically provide wire routing and retention.

Question 3

____ is a term used to mean joining of single wire ends or the joining of two or more electrical conductors at a single point.
A) Tinning
B) Heat shrink
C) Splice
D) Stripping

Accepted Answer

Splice is the term used to mean joining of single wire ends or the joining of two or more electrical conductors at a single point. Tinning refers to coating a wire or electrical contact with a thin layer of solder, while heat shrink is a type of tubing that can be used to insulate and protect wires or connections. Stripping refers to the process of removing insulation from a portion of a wire in order to expose the conductor underneath.

Question 4

Most of the wires in an automobile are covered with ____ insulation to identify wires and electrical circuits.
A) colored
B) numbered
C) metallic
D) diagrammatic

Accepted Answer

Colored insulation is used to identify wires and electrical circuits in automobiles. This helps technicians and mechanics identify and troubleshoot problems more easily. Numbered insulation may also be used in some cases, but colored insulation is the most common. Metallic insulation is not typically used for identifying wires, and diagrammatic insulation is not a common term in the automotive industry.

Question 5

Technician A says a wiring diagram indicates where circuits receive their voltage source and the color of the wires used in the circuit. Technician B says a wiring diagram indicates what circuits are interconnected and gives the location of the electrical components. Who is correct?
A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Accepted Answer

Both technicians are correct. A wiring diagram provides both information about circuit interconnections and electrical component locations, as well as information about where circuits receive their voltage source and the color of the wires used in the circuit.

Question 6

Technician A says a wiring diagram is an excellent tool in locating circuit failures. Technician B says in most cases a wiring diagram is not necessary to locate circuit failures. Who is correct?
A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Accepted Answer

Technician A is correct. A wiring diagram is an essential tool in locating circuit failures as it provides a visual representation of the wiring and electrical components in the system, making it easier to trace the path of the electricity and identify any potential issues. Technician B is incorrect in stating that a wiring diagram is not necessary in most cases, as it is always best to have all available tools and resources to diagnose and repair the issue.

Question 7

There is __________ resistance in the stranded wire than in the solid wire.
A) more
B) less

Accepted Answer

Stranded wire has a larger surface area than solid wire, which means that there is more space for electrons to move through the conductor. This results in less resistance in stranded wire compared to solid wire.

Question 8

Once it is determined that the battery is operating correctly, the ____ should always be the starting point in troubleshooting an electrical system.
A) schematic
B) component locator
C) ground and power leads
D) starting system

Accepted Answer

The answer of Once it is determined that the battery...

Question 9

Technician A says that wiring harnesses pass from the passenger compartment to the engine compartment through bulkhead connectors. Technician B says a wire harness is a group of wires that branches out to various electrical components. Who is correct?
A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Accepted Answer

Technician A is correct that wiring harnesses pass from the passenger compartment to the engine compartment through bulkhead connectors. Technician B is correct that a wire harness is a group of wires that branches out to various electrical components. Therefore, both technicians are correct.

Question 10

Ground straps are used to:
A) Provide a return path to the battery between insulated components.
B) Suppress electromagnetic induction.
C) All of these choices.
D) None of these choices.

Accepted Answer

Ground straps are used to provide a return path to the battery between insulated components and to suppress electromagnetic induction. Therefore, option C is the best choice as it includes both of these reasons.

Question 11

In most color codes, the first group of letters designates the __________ __________ of the insulation. The second group of letters indicates the color of the __________.
A) material composition, insulation
B) base color, tracer
C) material composition, base
D) tracer color, base

Accepted Answer

The first group of letters in most color codes designates the base color of the insulation, while the second group indicates the color of the tracer. This system helps in identifying wires and cables in various applications.

Question 12

Two technicians are discussing shielded wire repair. Technician A says the shielded wire must kept separate from the circuit wire. Technician B says there is no difference between repairing a shielded or non-shielded wire. Who is correct?
A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Accepted Answer

Technician A is correct. Shielded wire must be kept separate from the circuit wire to prevent electrical interference. Technician B is incorrect as repairing a shielded wire requires special attention to the shielding layer to ensure it remains intact.

Question 13

The AWG standard assigns a(n) ____ number to the wire based on the diameter of the conductor not including the insulation.
A) alphanumeric
B) resistive
C) thermal based
D) gauge

Accepted Answer

The AWG standard assigns a gauge number to the wire based on the diameter of the conductor not including the insulation. The other options (alphanumeric, resistive, and thermal based) are not relevant to the AWG standard for wire sizing.

Question 14

____ between the powertrain components and the vehicle's chassis are used to complete the return path to the battery.
A) Wiring harnesses
B) Grommets
C) Ground straps
D) Sheet metal parts

Accepted Answer

Ground straps are used to complete the return path to the battery by providing a direct connection between the powertrain components and the vehicle's chassis. Wiring harnesses, grommets, and sheet metal parts do not provide this direct connection.

Question 15

If the connector is a one-piece, molded-type connector, it cannot be ____ for repairs.
A) disassembled
B) spliced
C) reprogrammed
D) removed

Accepted Answer

One-piece, molded-type connectors are designed to be a single, integrated unit, making them impossible to disassemble for repairs.

Question 16

Ground straps are used to:
A) Provide a return path to the battery between insulated components.
B) Suppress electromagnetic induction.
C) Both A and B
D) Neither A nor B

Accepted Answer

Ground straps provide a return path for electrical current back to the battery and also help to suppress electromagnetic induction.

Question 17

____ wiring is the term used for conductors used for low voltage circuits.
A) Thin insulation
B) Secondary
C) Primary
D) Low gauge

Accepted Answer

The answer of ____ wiring is the term used for...

Question 18

______________________________ complete the return path to the battery between components that are insulated.
A) Connectors
B) Power wires
C) Grounds
D) Buss bars

Accepted Answer

Grounds complete the return path to the battery between components that are insulated, providing a common reference point for the electrical system and ensuring its safe operation.

Question 19

Most wiring diagrams do not show an actual drawing of the components. Rather, they use ____to represent the components.
A) codes
B) legends
C) electrical symbols
D) circuit numbers

Accepted Answer

Electrical symbols are commonly used in wiring diagrams to represent components such as resistors, capacitors, switches, and motors. These symbols provide a standardized representation of the component, making the diagram easier to read and understand. Codes, legends, and circuit numbers may also be included in a wiring diagram, but they are not typically used to represent the components themselves.

Question 20

In a wire, an increase in temperature creates a similar __________ in resistance.
A) decrease
B) increase

Accepted Answer

An increase in temperature leads to an increase in the resistance of a wire. This is because as temperature increases, the atoms in the wire vibrate more, which results in more collisions between the electrons and the atoms. This increases the overall resistance of the wire, thereby making it harder for the current to flow through it.

Quiz 4: Wiring and Circuit Diagramswiring Repair and Reading Circuit Diagrams

Most ____ use printed circuit boards as circuit conductors.

__ are used to prevent damage to the wiring by maintaining proper wire routing and retention.

____ is a term used to mean joining of single wire ends or the joining of two or more electrical conductors at a single point.

Most of the wires in an automobile are covered with ____ insulation to identify wires and electrical circuits.

Technician A says a wiring diagram indicates where circuits receive their voltage source and the color of the wires used in the circuit. Technician B says a wiring diagram indicates what circuits are interconnected and gives the location of the electrical components. Who is correct?

Technician A says a wiring diagram is an excellent tool in locating circuit failures. Technician B says in most cases a wiring diagram is not necessary to locate circuit failures. Who is correct?

There is __________ resistance in the stranded wire than in the solid wire.

Once it is determined that the battery is operating correctly, the ____ should always be the starting point in troubleshooting an electrical system.

Technician A says that wiring harnesses pass from the passenger compartment to the engine compartment through bulkhead connectors. Technician B says a wire harness is a group of wires that branches out to various electrical components. Who is correct?

Ground straps are used to:

In most color codes, the first group of letters designates the of the insulation. The second group of letters indicates the color of the __.

Two technicians are discussing shielded wire repair. Technician A says the shielded wire must kept separate from the circuit wire. Technician B says there is no difference between repairing a shielded or non-shielded wire. Who is correct?

The AWG standard assigns a(n) ____ number to the wire based on the diameter of the conductor not including the insulation.

____ between the powertrain components and the vehicle's chassis are used to complete the return path to the battery.

If the connector is a one-piece, molded-type connector, it cannot be ____ for repairs.

Ground straps are used to:

____ wiring is the term used for conductors used for low voltage circuits.

______________________________ complete the return path to the battery between components that are insulated.

Most wiring diagrams do not show an actual drawing of the components. Rather, they use ____to represent the components.

In a wire, an increase in temperature creates a similar __________ in resistance.