Week 3, Chapter 19 and 20 Test Questions

DS 100

Why is multi-stranded wire better at conducting higher amounts of current with less resistance?

Select one:

a. Because it has an adhesive layer between the tubing and wire.

b. Because it encloses multiple conducti9osr into a single vinyl insulator covering.

c. Because it has more surface area to conduct electron flow.

d. Because current tracks that contain electrical components and conductors are situated between power and ground.

c. Because it has more surface area to conduct electron flow.

Which type of wire provides the highest heat resistance of any primary wiring?

Select one:

a. SXL

b. SGR

c. GXL

d. TXL

a. SXL

Which one of the following statement is NOT true about the Metri-Pack connector from Delphi?

Select one:

a. It is rated at 20 amps per pin at 16 volts DC.

b. Terminals have core wings that allow crimp-only connections.

c. Terminals are flat and tin-plated.

d. It is a pull-to-seat connector

d. It is a pull-to-seat connector

Technician A says that a latch prevents the mating halves of the connecter or terminal pins from disconnecting. Technician B says that terminals are not gender-differentiated. Who is correct?

Select one:

a. Technician A

b. Technician B

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

a. Technician A

Crimp connectors must be used with _____ to make the repair permanent.

Select one:

a. Double-walled shrink tube

b. Barrel-type crimping pliers

c. Single-Walled shrink tube

d. Shrink-type connectors

a. Double-walled shrink tube

What is water wicking?

Select one:

a. Movement of water beneath the wiring insulation

b. Measures taken to prevent water intrusion an condensation

c. The insulation’s ability to resist intrusion by a liquid

d. Corrosion of wire due to water

a. Movement of water beneath the wiring insulation

A _____ is typically located at the top of the DIN wiring diagram page.

Select one:

a. Fuse link

b. Circuit ground

c. Ground stud

d. Splice

a. Fuse link

If the voltage drop across the wire is too high, all of the following may occur, EXCEPT:

Select one:

a. The circuit may overheat

b. The load may not operate properly

c. Components may be damaged

d. The circuit will carry too much current

d. The circuit will carry too much current

Technician A says that parallel wiring is a type of custom-made wiring harness that encloses multiple conductors into a single vinyl insulator covering. Technician B says that parallel wiring is often used for rear taillight wiring in trucks, buses, and trailer harnesses. Who is correct?

Select one:

a. Technician A

b. Technician B

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

c. Both Technician A and Technician B

_____ wiring diagrams are used by many North American-based OEM’s

Select one:

a. DIN

b. VF

c. Block

d. Isometric

c. Block

The gauges 00, 000, and 0000 are often used to measure _____ cable.

Select one:

a. Battery

b. Audio

c. Auto

d. Thin wall

a. Battery

Joule’s Law states that if the amperage increases through a wire conductor beyond a threshold cross-sectional area, the resistance will _____.

Select one:

a. Decrease

b. Increase

c. First decrease, then increase

d. First increase, then decrease

b. Increase

Which type of wire has a cross-linked polyethylene jacket that is resistant to oil, grease, gasoline, and acids?

Select one:

a. GPT

b. SXL

c. GXL

d. TXL

d. TXL

The Metric Gauge system measures the cross-sectional _____ of the wire.

Select one:

a. Diameter

b. Surface area

c. Length

d. Gauge

b. Surface area

What role does a latch or a lock play in a connector?

Select one:

a. Surrounds and protects the terminal area

b. prevents intrusion of dirt into the terminal area

c. Prevents the connector from separating

d. Provides resistance to failures caused by vibration and heating

c. Prevents the connector from separating

Technician A says that Copper-Zinc or Copper-Bronze(e.g., CuSn4) are being replaced by Copper-Nickel-Silicon (CuNiSi) alloys. Technician B says that terminals are generally soldered to the wire rather than crimped. Who is correct?

Select one:

a. Technician A

b. Technician B

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

a. Technician A

Technician A says that a latch prevents the mating halves of the connector or terminal pins from disconnecting. Technician B says that terminal are not gender-differentiated. Who is correct?

Select one:

a. Technician A

b. Technician B

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

a. Technician A

_____ terminals have wings at the end where the wire inserts.

Select one:

a. Male

b. Female

c. Both male and female

d. Pull-to-seat and push-to-seat

c. Both male and female

What type of heat shrink is available?

Select one:

a. Single wall only

b. Double and single wall

c. Triple, double, and single wall

d. Triple wall only

b. Double and single wall

Why is soldering wires together better than just twisting?

Select one:

a. Because it provides additional abrasion resistance

b. Because it provides protection against water wicking

c. Because it provides a strong-mechanical and low-electrical resistance

d. Because it provides the best seal for a spliced electrical connection

c. Because it provides a strong-mechanical and low-electrical resistance

Crimp connectors must be used with _____ to make the repair permanent.

Select one:

a. Double-walled shrink tube

b. Barrel-type crimping pliers

c. Single-walled shrink tube

d. Shrink-type connectors

a. Double-walled shrink tube

Technician A says that heat-shrink tubing does not provide effective protection to a spliced electrical connection. Technician B says that spliced connections need protection against water wicking. Who is correct?

Select one:

a. Technician A

b. Technician B

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

b. Technician B

A primary difference between the DIN and Valley Forge(VF) wiring diagrams is that VF diagrams _____.

Select one:

a. Use standards for wiring colors, codes, and symbols

b. Show circuit operation from left to right

c. Show flow from top to bottom

d. Use SAE-type symbols

d. Use SAE-type symbols

A schematic diagram is not concerned with the _____ of the wires.

Select one:

a. Current flow

b. Function

c. Physical layout

d. Electrical connections

c. Physical layout

The purpose of the terminal designation system is to _____.

Select one:

a. Enable connection verification of wiring components for repair

b. Allow the technician to follow current flow through the component

c. Allow the technician to break the complex symbol down into smaller components

d. Find the continuation of a conductor on another page or diagram

a. Enable connection verification of wiring components for repair

While reading and interpreting schematic diagrams, the green wiring color represents _____.

Select one:

a. Battery

b. Ignition

c. Ground

d. Headlights

c. Ground

Technician A says that, generally, pin assignments are labeled on the plastic hard-shell connector housing and/or the corresponding component. Technician B says that on larger connectors, pin assignments are labelled at either end of a row. Who is correct?

Select one:

a. Technician A

b. Technician B

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

c. Both Technician A and Technician B

What is ladder logic?

Select one:

a. It is the designed-in logic of a circuit that determines what activates a specific circuit

b. It helps understanding how software logic operates

c. It is a circuit diagram of relay logic software

d. It determines what activates a generic circuit

a. It is the designed-in logic of a circuit that determines what activates a specific circuit

In a networked controlled system, switching on the wipers _____.

Select one:

a. Locks the doors

b. Adjusts the sensitivity of the antilock brake system

c. Could activate the headlight

d. Would have no effect

c. Could activate the headlight

Any light on the exterior of the vehicle must have photometric certification for FMVSS _____ standards.

Select one:

a. 170

b. 140

c. 108

d. 102

c. 108

Which of these are included in major exterior lighting circuits?

Select one:

a. Upper lighting

b. Reverse signals

c. One-way flashers

d. Park-taillights

d. Park-taillights

Which of the following in the fluorescent bulb causes electrons to be released from the filaments while heating some of the mercury and turning it to a vapor?

Select one:

a. High-voltage circuit

b. Step-up voltage circuit

c. Low-voltage circuit

d. Vacuum circuit

b. Step-up voltage circuit

In high-intensity discharge bulbs, light is produced by using a high-voltage electric arc of _____ and _____ volts.

Select one:

a. 2000, 3500

b. 2000, 2500

c. 3000, 4500

d. 1000, 1500

b. 2000, 2500

What does the conductor color yellow of lamp and signal circuits indicate?

Select one:

a. Side marker and identification lamps

b. Right-hand turn signal and hazard signal

c. Left-hand turn signal and hazard signal

d. Tail, combined rear clearance, and license plate

c. Left-hand turn signal and hazard signal

The _____ trailer connector is an SAE standard set for connecting the trailer cord to the tractor.

Select one:

a. J-460

b. J-550

c. J-540

d. J-560

d. J-560

Why are halogen bulbs considered as alternatives?

Select one:

a. To eliminate the problem of filament deposition on bulb walls

b. To eliminate the problem of cracks on bulb walls

c. To eliminate the problem of leaks on bulbs

d. To eliminate the problem of overheating

a. To eliminate the problem of filament deposition on bulb walls

Auxiliary equipment on trailers connecting two circuits through the _____ do not supply enough current.

Select one:

a. 7-pin

b. 8-pin

c. 4-pin

d. 6-pin

a. 7-pin

Which of the following holds true for electronic control modules?

Select one:

a. Electronic control modules now control small sections of the electrical system.

b. Decisions are based on inputs received from a variety of sources.

c. They serve as a power consumption point for the electrical system.

d. Adding accessories is less likely to involve changing electrical templates for system control software instructions.

b. Decisions are based on inputs received from a variety of sources.

Technician A says that distributed control of the electrical system means a variety of modules shares control of the electrical system operation. Technician B says that distributed control of the electrical system means a variety of modules has direct point-to-point wiring connections. Who is correct?

Select one:

a. Technician A

b. Technician B

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

a. Technician A

Conventional electrical systems are _____.

Select one:

a. Quickly disappearing

b. Becoming more popular

c. Distributed controlled

d. What activates a generic circuit

a. Quickly disappearing

While discussing lighting circuits, Technician A says that the lamps facing rearward must emit red light. Technician B says that the lamps facing sideways and all turn signals must emit either amber or red light. Who is correct?

Select one:

a. Technician A

b. Technician B

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

c. Both Technician A and Technician B

FMVSS _____ is the standard for headlamp concealment devices.

Select one:

a. 103

b. 108

c. 112

d. 125

c. 112

Technician A says that the FMVVS legislates standards for design and construction. Technician B says that legislated standards protect the public. Who is correct?

Select one:

a. Technician A

b. Technician B

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

c. Both Technician A and Technician B

Which of the following bulbs use conventional bulb technology?

Select one:

a. Incandescent bulbs

b. Fluorescent bulbs

c. Halogen bulbs

d. Compact fluorescent bulbs

a. Incandescent bulbs

In high-intensity discharge bulbs, approximately _____ amps of current are used to excite the electrons of the metal atoms into producing a bright white light.

Select one:

a. 3

b. 4

c. 5

d. 2

a. 3

Halogen bulbs operate at approximately _____ efficiency, converting most of the electrical energy into heat.

Select one:

a. 5-8%

b. 18-20%

c. 30-40%

d. 45-50%

b. 18-20%

What do yellow cables and connectors designate?

Select one:

a. J1537

b. J1939

c. J-560

d. ISO 3731

d. ISO 3731

Trailer cords connecting the trailer and tractor are between _____ in working length.

Select one:

a. 60” and 100”

b. 50” and 100”

c. 40” and 400”

d. 60” and 200”

d. 60” and 200”

What is the approximate length of coiled trailer cord with the 60” cable?

Select one:

a. 12 ft

b. 13 ft

c. 11 ft

d. 10ft

a. 12 ft