Question 1

Which of the following electrical troubleshooting routines is in the correct sequence?

Accepted Answer

The correct sequence for electrical troubleshooting is to first confirm the concern or problem, study the diagram to understand the electrical system, locate and repair the fault, and then test the repair to ensure it solved the original problem. Option D is the only answer that follows this sequence correctly.

Question 2

Where is the best place to find the location of a blower relay on the vehicle?

Accepted Answer

The component locator is the best choice to find the location of a blower relay on a vehicle. It provides a visual illustration of where the component is located within the vehicle layout. The wiring diagram manual may also contain this information, but it can be more difficult to navigate and may not provide a clear visual representation. The connector locator and ground locator are not relevant to locating a blower relay specifically.

Question 3

Ground straps are used to:

Accepted Answer

Ground straps serve multiple purposes, including providing a return path to the battery and suppressing electromagnetic induction. Therefore, both options A and B are correct, making choice C the best answer.

Question 4

In the AWG standard, the __________ the number, the smaller the wire __________ .

Accepted Answer

In the American Wire Gauge (AWG) standard, a higher gauge number indicates a smaller wire diameter.

Question 5

Wire gauge size is measured based on the __________ of the conductor.

Accepted Answer

Wire gauge size is measured based on the diameter of the conductor. The larger the diameter, the smaller the gauge size.

Question 6

A switch is drawn on a wiring diagram with "NC" printed beside it. What does this indicate?

Accepted Answer

"NC" stands for "Normally Closed," indicating that the switch will be closed (allowing current flow) when the vehicle is off and not receiving power.

Question 7

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

Accepted Answer

Wiring protective devices such as grommets, cable ties, wire looms, and braided sleeving are commonly used to prevent damage to the wiring by maintaining proper wire routing and retention. Connector protective devices, connector terminal locks, and printed circuit boards are not directly related to wire routing and retention.

Question 8

A wiring diagram is an electrical schematic that shows a __________ of actual electrical or electronic components (by use of symbols) and the __________ of the vehicle's electrical systems.

Accepted Answer

The answer of A wiring diagram is an electrical schematic...

Question 9

A __________ __________ is used to determine the exact location of several of the electrical components.

Accepted Answer

A component locator is specifically designed to help locate the position of various electrical components in a given system. The other options may provide general information on the system, but they do not focus on the location of individual components.

Question 10

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

Accepted Answer

In most color codes, the first group of letters (such as "W" for white or "BK" for black) designates the base color of the insulation, while the second group of letters (such as "R" for red or "BL" for blue) indicates the color of the tracer or stripe. This helps to identify the wire or cable's function or circuit. The choice "A" is incorrect because the material composition of the insulation is usually indicated by a separate code or marking. Choice "C" is similar to choice "A" and is therefore incorrect. Choice "D" is incorrect because the tracer color is represented by the second group of letters, not the first.

Question 11

What does a dotted line between connectors indicate?

Accepted Answer

A dotted line between connectors typically indicates that the connector halves are physically the same, meaning they have the same shape and size. This can be helpful in identifying connectors and ensuring they are properly connected.

Question 12

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

Accepted Answer

Stranded wire consists of multiple smaller wires twisted together which creates more surface area for current to flow through compared to a solid wire of the same size. This results in less resistance in the stranded wire.

Question 13

__________ connectors are used when several wires must pass through the bulkhead.

Accepted Answer

Bulkhead connectors are specifically designed to allow multiple wires to pass through a bulkhead, making them the best choice for this particular use case. Molded, Metri-Pack, and Butt connectors are not designed for this purpose.

Question 14

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

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 15

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

Accepted Answer

An increase in temperature causes an increase in the resistance of a wire due to the increase in kinetic energy of the atoms in the wire, leading to more collisions between electrons and atoms which hinders the flow of electric current, thus increasing resistance.

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

Which of the following electrical troubleshooting routines is in the correct sequence?

Where is the best place to find the location of a blower relay on the vehicle?

Ground straps are used to:

In the AWG standard, the the number, the smaller the wire .

Wire gauge size is measured based on the __________ of the conductor.

A switch is drawn on a wiring diagram with "NC" printed beside it. What does this indicate?

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

A wiring diagram is an electrical schematic that shows a of actual electrical or electronic components (by use of symbols) and the of the vehicle's electrical systems.

A is used to determine the exact location of several of the electrical components.

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

What does a dotted line between connectors indicate?

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

__________ connectors are used when several wires must pass through the bulkhead.

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

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