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Quiz Session - Attempts With Random Questions

ASE xEV (Level 1) Exam Questions

Page 4 of 10

61.

When can high-voltage cables be marked in other colors than orange?

  • When they are within electrical protection barriers

  • In Tesla vehicles

  • Never

  • Anytime

Correct answer: When they are within electrical protection barriers

Any high-voltage cables found within electrical protection barriers don't need to be orange. It's expected that cables within these barriers are high-voltage.

Any cables found outside of these protection barriers must have an orange covering. With this warning, technicians understand the risk of electric shock. 

62.

What is another name for the insulated retrieval hook used to assist others being shocked?

  • Rescue hook

  • Electric-blocking stick

  • EV emergency hook

  • Shock stick

Correct answer: Rescue hook

The insulated retrieval hook is also known as a rescue hook. You may otherwise have heard it called the hot stick. Either way, this stick is used to remove a person being shocked from the source of electricity without being harmed yourself. 

Your workplace may have an insulated retrieval hook available when working around EVs. You should know how to remove the person from an active circuit without the fear of electrocution. 

63.

Which of the following components does not create or transmit high-voltage electrical currents?

  • Heated seats

  • Air conditioning compressor

  • Orange-colored cables

  • Battery Management System (BMS) 

Correct answer: Heated seats

Heated seats don't draw enough power to be considered high-voltage. These are a common staple in many of today's luxury automobiles, with power to the seats coming from a 12V battery.

The air conditioning compressor and Battery Management System (BMS) create or transmit high-voltage currents. The orange-colored cables also indicate high-voltage. Other high-voltage components include the battery pack, charging equipment, inverter power electronics, capacity in the vehicle's inverter-rectifier assembly, DC/DC converter, modules, Electronic Control Unit (ECU), electric motor, and high-voltage heater. 

64.

What voltage is considered hazardous by OSHA?

  • 50 volts

  • 40 volts

  • 30 volts

  • 20 volts

Correct answer: 50 volts

OSHA defines hazardous voltage as anything 50 volts or above. This definition applies to both AC and DC voltage.

Electrical current passing through the human body can lead to injury or death. That's why OSHA has set guidelines when working with this level of voltage, especially with EV repair and maintenance. 

65.

According to OSHA, what changes a technician from an affected employee to an authorized employee?

  • Person locks out or tags equipment for service or maintenance

  • Person endures an electrical shock

  • Person drives the EV

  • Person goes from being a Level 1 technician to Level 2

Correct answer: Person locks out or tags equipment for service or maintenance

The affected employee is a person whose job requires them to use or operate machinery that requires lockout or tagout. In comparison, the authorized employee locks, or tags, the equipment to perform service or maintenance.

The affected employee becomes authorized when their job duties require this expertise. A Level 1 technician is not authorized to disable the high-voltage electrical system. 

66.

If stranded energy occurs, where will it be stored?

  • In the battery or capacitors

  • In the electric motor

  • In the Manual Service Disconnect (MSD)

  • In the Battery Management System (BMS) 

Correct answer: In the battery or capacitors

Stranded energy is stored in the battery or capacitors. This issue usually occurs following an accident and is considered dangerous.

There's no stranded energy left behind in the electric motor or Battery Management System (BMS). The Manual Service Disconnect (MSD) won't store energy either. 

67.

What cables need to be covered in orange to warn of high voltage?

  • Any over 30V AC or 60 V DC

  • Any over 20V AC or 50 V DC

  • Any over 15V AC or 45 V DC

  • Any over 10V AC or 40 V DC

Correct answer: Any over 30V AC or 60 V DC

US FMVSS 305 S5.4.1.2 (Federal Motor Vehicle Safety Standards) specify that high-voltage cables with sources over 30V AC or 60 V DC must be wrapped or insulated in orange to alert of the danger. This ruling does not apply to any cables that are located within the electrical protection barriers. 

Cables not marked in orange can be assumed to be low-voltage, although it's always safest to read the service manual before touching any wires in the EV.

68.

At what point can you touch a victim of electrical shock?

  • Once contact with the electrical current has been broken

  • When a person is still in contact with electrical current

  • When it's unclear if the source of electricity is shut down

  • When you need to push them away from the electrical connection

Correct answer: Once contact with the electrical current has been broken

You should never touch an electrical shock victim while they are still part of the current. Once the power source has been shut down and the victim is no longer being shocked, you can touch them.

It's best to contact 911 before doing anything with the patient. The emergency response team will have more direction as to the next steps. 

69.

High-voltage components are labeled with a warning sign that resembles what?

  • Lightning bolt with an arrow pointing downward

  • Lightning bolts from the sky

  • Stop sign

  • Person being shocked 

Correct answer: Lightning bolt with an arrow pointing downward

High-voltage warning signs are triangular. They contain a lightning bolt with an arrow pointing downward to signify the flow of electrical current.

When these signs are encountered, it's a warning that only a qualified technician should touch and work on the component. 

70.

What does de-energized mean?

  • State that's free of voltage

  • Feeling lethargic

  • Ignition is turned off

  • Power is shut down to the service bay

Correct answer: State that's free of voltage

Both OSHA and 70E list the term de-energized as “Free from any electrical connection to a source of potential difference and from electrical charge; not having a potential difference from that of earth.” Therefore, the term de-energized means a state that's free of voltage. 

Technicians need to de-energize EVs before working on them. They must remove the voltage sources to ensure there's no chance of electrical shock. 

71.

Warning labels are placed on EVs for which of the following purposes?

  • To warn of electrical current

  • To explain the trim level

  • To illustrate available features

  • To determine electric driving range

Correct answer: To warn of electrical current

OEMs (Original Equipment Manufacturers) place warning labels on the EVs to indicate that there's a threat of electrical current. This current can lead to serious injury or death.

Because the OEM may put the labels in a different place than others, it's important to follow all manufacturer guidelines when working on or around an EV. 

72.

Is it necessary for workers outside of service and repair to be electrically aware people?

  • Yes

  • No

  • In some occasions

  • Only when EVs make up more than 50% of the dealership inventory

Correct answer: Yes

The ASE standards require that anyone encountering an EV in the workplace should have training to become an electrically aware person. This requirement includes those working in service and repair, but also extends to employees in sales or other related environments.

73.

Where should the high-voltage battery disconnects be while working on the EV?

  • In a secured container

  • In the vehicle

  • With your tools

  • It doesn't matter

Correct answer: In a secured container

When removing the high-voltage battery disconnects, they should be placed in a secured container. This action prevents injury and electrical shock.

You don't want the battery disconnects to remain in the vehicle or with your tools. Your employer should have an appropriate location to store them. 

74.

Why is it important to have high-voltage electrical safety awareness?

  • To identify hazards and reduce risk

  • To maintain EVs

  • To repair EVs

  • To repair electrical power lines

Correct answer: To identify hazards and reduce risk

By learning about high-voltage electrical safety awareness, you can identify hazards and reduce risk for yourself and those around you. These are important qualifications for anyone working around EVs. 

These skills won't necessarily help you maintain or repair an EV, but they do give you a foundation to move further with training. 

75.

Lockout devices must be used in a way that holds energy-isolating devices in what position?

  • Off

  • On

  • Open

  • Closed

Correct answer: Off

The lockout equipment must be applied in a way that energy-isolating devices are in an "off" position. They need to be in a safe position.

The application of lockout equipment should only be done by authorized employees.

76.

The term xEV is given to define which of the following:

  • Electrified vehicles containing a high-voltage system

  • Gas-powered vehicles

  • Diesel-powered vehicles

  • Commercial vehicles

Correct answer: Electrified vehicles containing a high-voltage system

The term xEV is used anywhere an electrified vehicle with a high-voltage system is discussed. It applies to HEV, PHEV, BEV, PEV, FCEV, and EV types.

Gas- and diesel-powered vehicles have electrical systems, but nothing that contains high voltage. Additionally, commercial vehicles can be powered by any number of sources, whether it be gas, diesel, or an electrified motor.

77.

What does the term "working voltage" mean?

  • Highest root mean square voltage of the source

  • Voltage that is put to work for a greater good

  • Amount of voltage not used

  • Voltage left over after the power is used

Correct answer: Highest root mean square voltage of the source

Working voltage is defined as the highest root mean square voltage of the source. Working voltage may occur across the terminals or between the terminals of any conductive parts in open circuit conditions or under normal operating conditions.

78.

What is the term used to describe a component connected to an energy source or that has stored energy?

  • Energized

  • Plugged in

  • Powered up

  • Ready to go

Correct answer: Energized

The term energized tells you that a component is either connected to an energy source or it may contain stored energy. Having residual energy is just as dangerous as being connected to the power source.

Level 1 technicians are not supposed to handle or work with energized components. These technicians may support other workers by providing help with signs and barriers.       

79.

Which of the following can be used as an energy isolating device?

  • Disconnect switch

  • Selector switch

  • Control circuit type device

  • Push button 

Correct answer: Disconnect switch

The disconnect switch is an energy isolating device because it physically prevents energy from being transmitted or released. A manually-operated electrical circuit breaker can also be used. 

The selector switch and push button cannot be used. These, in conjunction with other control circuit type devices, are not considered manual energy isolating devices. 

80.

Can conductive barricades be used in a shop with EVs?

  • Yes, when there's no risk of electrical shock

  • No, non-conductive barricades are all that should be used

  • Yes, conductive barricades can be used anywhere in the shop

  • Yes, they can be used interchangeably with non-conductive barricades

Correct answer: Yes, when there's no risk of electrical shock

Non-conductive barricades must be used when there's the chance of electrical shock. If access must be limited to a work area where electrical components are energized, non-conductive barricades are the only option.

When working in other parts of the shop, conductive barricades can be used. There's no regulation stating what types of barricades are usable outside of the electrified area. 

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