Week 1 Chapter 8 and 13 Test Questions

DS 100

_____ has a mandate to have radar-based collision-avoidance systems in vehicles.

Select one:

a. Europe

b. North America

c. Asia

d. Australia

a. Europe

Technician A says increasing sophistication of heavy-duty electrical systems includes radar-based collision-avoidance systems. Technician B says increasing sophistication includes hybrid electric powertrain and telematics. 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

Technician A says all matter is made up of atoms. Technician B says atoms are made up of electrons

and protons only. 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

Which of these statements is NOT true about electric current?

Select one:

a. Electric current is produced by the flow of positive charges.

b. Electrostatic forces are essential to produce the flow of electrical current.

c. A proton repels another proton.

d. Electric current can be converted into different forms of energy.

a. Electric current is produced by the flow of positive charges.

_____ is the term for liquids that conduct electric current.

Select one:

a. Ion

b. Insulator

c. Impurity

d. Electrolytes

d. Electrolytes

If an atom has more electrons than it does protons, it is called

Select one:

a. A positive atom

b. A positive ion

c. A negative ion

d. A negative atom

c. A negative ion

A circuit that has a current flow of 2 amps and resistance of 12 ohms would have a voltage of _____.

Select one:

a. 24 volts

b. 24 watts

c. 6 volts

d. 6 watts

a. 24 volts

Which of these electrical terms is very much similar to the mechanical term "friction"?

Select one:

a. Voltage

b. Amperage

c. Wattage

d. Resistance

d. Resistance

Electronic circuits use _____ amperage and often _____ electrical signals.

Select one:

a. Process; simply

b. Less; expand

c. More; process

d. Less; process

d. Less; process

Technician A says that electronic circuits consist of integrated circuits. Technician B says electrical circuits consist of integrated circuits. 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

Which of the following uses a single driver in a lead truck and has multiple driverless trucks that follow the lead truck?

Select one:

a. Radar system

b. Platooning

c. Lidar

d. Cruise control

b. Platooning

Beginning in 2017, the NHTSA requires _____ on all class 7 and 8 vehicles.

Select one:

a. Collision avoidance

b. Stability control

c. Telematics

d. GHG legislation

b. Stability control

_____ has a mandate to have radar-based collision-avoidance systems in vehicles.

Select one:

a. Europe

b. North America

c. Asia

d. Australia

a. Europe

Technician A says increasing sophistication of heavy-duty electrical systems includes radar-based collision-avoidance systems. Technician B says increasing sophistication includes hybrid electric powertrain and telematics. 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

All of the following are examples of telematics, EXCEPT:

Select one:

a. Vehicle to vehicle

b. Vehicle to remote location

c. Internet, satellite, or cell

d. Remote fueling

d. Remote fueling

Technician A says all matter is made up of atoms. Technician B says atoms are made up of electrons and protons only. 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 states that a proton charge attracts another proton’s charge. Technician B states that an electron charge repels another electron’s charge. 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

In an electrical circuit or any electrical device, the push and pull producing the movement of electricity is supplied by _____.

Select one:

a. Electromagnetism

b. Electrostatic force

c. Friction

d. Photoelectric effect

b. Electrostatic force

Which of these statements is NOT true about electric current?

Select one:

a. Electric current is produced by the flow of positive charges.

b. Electrostatic forces are essentials to produce the flow of electrical current.

c. A proton repels another proton.

d. Electric current can be converted into different forms of energy.

a. Electric current is produced by the flow of positive charges.

_____ is a term that describes a property of electrical particles that either repels or attracts other electrical particles.

Select one:

a. Resistance

b. Voltage

c. Electrostatic force

d. Electromagnetism

c. Electrostatic force

Technician A says conductors are materials that hold electrons tightly and prevent electron movement. Technician B says because multiple electrons in its outer shell are held loosely by the nucleus, copper makes an excellent conductor. 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

d. Neither Technician A nor Technician B

_____ is the term for liquids that conduct electric current.

Select one:

a. Ion

b. Insulator

c. Impurity

d. Electrolytes

d. Electrolytes

When a gas conducts electricity, it is said to be in a _____ state.

a. Liquid

b. Plasma

c. Solid

d. Gaseous

b. Plasma

If an atom has more electrons than it does protons, it is called _____.

Select one:

a. A positive atom

b. A positive ion

c. A negative ion

d. A negative atom

c. A negative ion

Which of the following prevents the flow of electricity?

Select one:

a. Nucleus

b. Conductors

c. Capacitor

d. Insulator

d. Insulator

What is the unit for AC frequency called?

Select one:

a. Ohm

b. Hertz

c. Voltage

d. Watt

b. Hertz

Which of these electrical components protects electrical circuits from heating and burning caused by excessive amperage?

Select one:

a. Semiconductor

b. Fuse

c. Resistor

d. Capacitor

b. Fuse

A circuit that has a current flow of 2 amps and resistance of 12 ohms would have a voltage of _____.

Select one:

a. 24 volts

b. 24 watts

c. 6 volts

d. 6 watts

a. 24 volts

_____ is the term used that describes the number of electrons moving in a circuit.

Select one:

a. Voltage

b. Current

c. Amperage

d. Resistance

c. Amperage

_____ is the unit for measuring electrical power.

Select one:

a. Watts

b. Volts

c. Ohms

d. Amperes

a. Watts

Technician A says that electronic circuits consists of integrated circuits. Technician B says electrical circuits consist of integrated circuits. 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 electrical circuits usually conduct lower amounts of current and electronic circuits operate with higher amounts of current. Technician B says electoral circuits conduct higher amounts of current and electronic circuits conduct lower amounts of current. 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

Electrical circuits use _____ conductors, while electronic circuits use _____ conductors.

Select one:

a. Longer; shorter

b. Larger; smaller

c. Smaller; larger

d. Shorter; longer

b. Larger; smaller

Electronic circuits use _____ amperage and often _____ electrical signals.

Select one:

a. Process; simply

b. Less; expand

c. More; process

d. Less; process

d. Less; process

Electronic circuits use electricity flowing through _____.

Select one:

a. Starters

b. Alternators

c. Transistors

d. Lights

c. Transistors

What is disadvantage of an LED test light?

Select one:

a. No indication of level of circuit voltage

b. No information on polarity

c. Adds additional load to a circuit

d. Must be a connected to an external power source

a. No indication of level of circuit voltage

Which of the following symbols represents the electrical unit of measurement for capacitance?

Select one:

a. MU

b. V

c. mV

d. F

d. F

Practices to observe when connecting an ammeter in series to measure amperage include:

Select one:

a. Connecting the meter in parallel to observe voltage drop

b. Ensuring that the circuit is disabled

c. Connecting the positive lead to the volts/ohms port and the negative lead to the common port

d. Observing polarity when measuring DC voltage, but not AC voltage

d. Observing polarity when measuring DC voltage, but not AC voltage

What does a circuit tracer into the wire to help determine the start and end location of a conductor?

Select one:

a. Heat intensity

b. Radio signal

c. Pressure waves

d. Magnetic field

b. Radio signal

What can help to identify specific pin functions or circuit numbers during test using break-out boxes?

Select one:

a. Graphing meters

b. Display rulers

c. Oscilloscopes

d. OEM templates

d. OEM templates

All of the following devices can be used together to identify the root cause of vehicle vibration EXCEPT:

Select one:

a. Oscilloscope

b. Road speed sensor

c. Three-axis accelerometer

d. Signal-conditioning module

a. Oscilloscope

Technician A says data link adapters are used to translate flash codes from the DLC into a format readable by a desktop or laptop computer. Technician B says the adapter may connect to the PC using a cable connected to a serial port, USB port, or wirelessly over the Internet or Bluetooth communication. Who is correct?

Select one:

a. Technician A only

b. Technician B only

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

b. Technician B only

In powered circuits, which of the following are placed around a conductor and are used to measure amperage?

Select one:

a. Probing tips

b. Inductive amp clamps

c. Alligator clips

d. Probing wires

b. Inductive amp clamps

Technician A says data link adapters are sued to translate flash codes from the DLC into a format readable by a desktop or laptop computer. Technician B says the adapter may connect to the PC using a cable connected to a serial port, USB port, or wirelessly over the Internet or Bluetooth communication. Who is correct?

Select one:

a. Technician A only

b. Technician B only

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

b. Technician B only

_____ refers to a meter’s internal resistance to current flowing from a live circuit into the meter when measuring voltage and amperage.

Select one:

a. Continuity

b. Inductance

c. Capacitance

d. High-impedance

d. High-impedance

What is a disadvantage of an LED test light?

Select one:

a. No indication of level of circuit voltage

b. No information on polarity

c. Adds additional load to a circuit

d. Must be connected to an external power source

a. No indication of level of circuit voltage

When connected in series with a circuit, which of the following can indicate bad grounding or parasitic current drawn from a battery?

Select one:

a. Meter shunts

b. Test lights

c. Voltmeters

d. Ohmmeters

b. Test lights

Technician A says test lights are sued by connecting the alligator clip to chassis ground or current at the insulated positive side of a circuit. Technician B says a blown fuse will light up a test light when probed on only one side with the key on. Who is correct?

Select one:

a. Technician A only

b. Technician B only

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

c. Both Technician A and Technician B

Technician A says a poplar type of LED test light is battery powered and has two LEDs: one red and the other green. Technician B says the LED light will change brightness depending on the circuyi’s voltage. Who is correct?

Select one:

a. Technician A only

b. Technician B only

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

a. Technician A only

Parasitic current drawing more than _____ amps easily lights up the bulb in the test lamp.

Select one:

a. 0.2

b. 03

c. 06

d. 0.9

c. 06

Which of the following operates like a fuse and has a maximum rating?

Select one:

a. Inductive amp clamp

b. Circuit tracer

c. Shunt

d. Accelerator

c. Shunt

The low-impedance ammeter of the DMM/multimeter uses _____ that blow when overloaded.

Select one:

a. Diodes

b. High-energy fuses

c. Shunts

d. Induction clamps

c. Shunts

Which of the following symbols represents the electrical unit of measurement for sound?

Select one:

a. U

b. dB

c. nF

d. Hz

b. dB

Measuring voltage drop using the DMM/multimeter (voltmeter function) when a circuit is operating is a more effective way of measuring _____.

Select one:

a. Polarity

b. High-impedance

c. Electron velocity

d. Resistance

d. Resistance

What type of meter uses a sweeping needle that continuously measures electrical values?

Select one:

a. Analog

b. Voltmeter

c. High-impedance

d. Digital

a. Analog

Technician A says that before using a digital multimeter, one of the first things to check is whether its shunts or fuses are in place and functioning. Technician B says shunts do not operate like fuses and do not have a maximum rating. Who is correct?

Select one:

a. Technician A only

b. Technician B only

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

a. Technician A only

Technician A says that if the circuit polarity is not correctly observed, digital multimeters will display a “reverse leads” message. Technician B says that when measuring voltage, the positive lead should be connected to the volts/ohms port and the negative lead to the common port. Who is correct?

Select one:

a. Technician A only

b. Technician B only

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

b. Technician B only

Measuring _____ requires that the circuit be broken and the meter placed in series with the circuit so that all the current flows through the meter shunts.

Select one:

a. AC

b. Voltage

c. Amperage

d. Resistance

c. Amperage

In powered circuits, which of the following are placed around a conductor and are used to measure amperage?

Select one:

a. Probing tips

b. Inductive amp clamps

c. Alligator clips

d. probing wires

b. Inductive amp clamps

DC inductive amp clamps typically use _____.

Select one:

a. Hall effect technology

b. Current transformers

c. Separate magnetic fields

d. Source voltage

a. Hall effect technology

_____ companies once commonly used circuit tracers to help field technicians locate problematic circuits.

Select one:

a. Mining

b. Manufacturing

c. Telephone

d. Audio-visual

c. Telephone

Which of the following can identify wires deeply buried behind walls or in tightly bundled harnesses?

Select one:

a. OEM templates

b. Circuit tracers

c. Oscilloscopes

d. Ohmmeters

b. Circuit tracers

Technician A says circuit tracers are electronic service tools used to trace a single wire over a distance where multiple wires are bundled, shorted, or open. Technician B says these units cannot identify wires deeply buried behind walls or in tightly bundled harnesses. Who is correct?

Select one:

a. Technician A only

b. Technician B only

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

a. Technician A only

Who does a circuit tracer inject into the wire to help determine the start and end location of a conductor?

Select one:

a. Heat intensity

b. Radio signal

c. Pressure waves

d. Magnetic field

b. Radio signal

A circuit tracer is made up of a transmitter, receiver and _____.

Select one:

a. Test leads

b. Amp clamp

c. Probe

d. Positive and negative terminals

c. Probe

Graphing meters can help to make service recommendations based on what kind of data?

Select one:

a. Qualitative

b. Waveform

c. Fault codes

d. Amperage

b. Waveform

What is connected in series with a major component or wiring harness to an ECM?

Select one:

a. Circuit tracer

b. Oscilloscope

c. Break-out box

d. Vibration analyzer

c. Break-out box

What type of meter is used to analyze electrical waveforms produced by sensors, motors, actuators, and alternators?

Select one:

a. Ohmmeter

b. Ammeter

c. Graphing meter

d. Voltmeter

c. Graphing meter

What can help to identify specific pin functions or circuit numbers during test using break-out boxes?

Select one:

a. Graphing meters

b. Display rulers

c. Oscilloscopes

d. OEM templates

d. OEM templates

Technician A says back-probing or piercing wires is the best way to connect test wires for diagnosing problems with the system. Technician B says the life expectancy of an electric motor is an example of a component that can be evaluated by examining the small changes in current and voltage spikes caused by worn brushes. Who is correct?

Select one:

a. Technician A only

b. Technician B only

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

b. Technician B only

All of the following devices can be used together to identify the root cause of vehicle vibration, EXCEPT:

Select one:

a. Oscilloscope

b. Road speed sensor

c. Three-axis accelerometer

d. Signal-conditioning module

a. Oscilloscope

In the vibration analysis process, what is the specific role of the signal-condition module?

Select one:

a. To collect data on vibration

b. To find the cause of vibration

c. To analyze the vibration data collected

d. To store the vibration data collected

d. To store the vibration data collected

Technician A says vibration analyzers are sued to identify the root cause of vehicle vibration. Technician B says that flywheel speed and road speed sensors are used along with the data collected from a three-axis accelerometer placed under the driver’s seat using a magnet. Who is correct?

Select one:

a. Technician A only

b. Technician B only

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

c. Both Technician A and Technician B

Technician A says code readers can guide a technician through certain procedures or have a build-in library of all SAE generic trouble codes. Technician B says code readers can perform off-board or on-board reprogramming of a vehicle’s computer modules, specifically the powertrain (ECM). Who is correct?

Select one:

a. Technician A only

b. Technician B only

c. Both Technician A and Technician B

d. Neither Technician A nor Technician B

a. Technician A only

Which of the following functions does a scan tool NOT perform?

Select one:

a. Cause the ECM to enter a range of diagnostic routines

b. Actuate output devices

c. Analyze waveforms generated by components

d. Display real-time engine parameters

c. Analyze waveforms generated by components

A scan tool function that can control selected vehicle components or initiate systems actuator or diagnostic tests on command is called _____.

Select one:

a. Meter

b. Bidirectional control

c. Graphic display

d. Scope

b. Bidirectional control