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Quiz Session - Attempts With Random Questions

ASE xEV (Level 1) Exam Questions

Page 10 of 10

181.

Which of the following would the Original Equipment Manufacturer (OEM) not recommend as part of the de-energizing procedure?

  • Leaving the keyless fob in detection range of the vehicle

  • Chocking the wheels

  • Putting the vehicle in park

  • Applying the parking brake

Correct answer: Leaving the keyless fob in detection range of the vehicle

The keyless fob should always be placed outside of detection range when de-energizing a vehicle. It must be in a secured container where it won't be used.

The OEM may also recommend chocking the wheels, putting the vehicle in park, and applying the parking brake.

182.

How do you turn off the high-voltage electrical supply when the source is line voltage?

  • Service disconnect

  • Flip the light switch off

  • Take the plug out of the power outlet

  • Turn off the ignition switch

Correct answer: Service disconnect

If the source is from the line voltage, you need to turn it off at the service disconnect. 

Flipping the light switch or taking a plug from the power outlet won't stop the source from the line. Additionally, turning off the ignition switch only helps if the high voltage is coming from the vehicle.

183.

How many ASTM (American Society for Testing and Materials) standards apply globally?

  • 12,000

  • 15,000

  • 10,000

  • 20,000

Correct answer: 12,000

ASTM International has more than 12,000 standards operating globally. The American Society for Testing and Materials develops technical content and guidelines for a wide range of systems, materials, products, and services. 

ASTM International was founded in 1898. The current headquarters are located in West Conshohocken, Pennsylvania. 

184.

When can a Level 1 technician open components that are labeled with a high-voltage warning?

  • Never

  • When following Original Equipment Manufacturer (OEM) guidelines

  • When instructed by employer

  • Only in an emergency

Correct answer: Never

The Level 1 technician is not equipped to open or work on high-voltage components. The only technicians equipped to work on these components are Level 2 and Level 3. 

Even when these technicians work on high-voltage components, all Original Equipment Manufacturer (OEM) guidelines must be followed to prevent injury or damage. 

185.

What is the meaning of something that's energized?

  • Connected to an energy source

  • Object underwent proper lockout/tagout procedures

  • It is removed from the vehicle

  • Object has been drained of energy

Correct answer: Connected to an energy source

If the item is connected to an energy source, it is energized. It can also be energized if it contains residual or stored energy.

Energized components must be locked or tagged according to OSHA rules before service or repair begins. Otherwise, there's a threat of electric shock. 

186.

What parts of the EV may the Level 1 technician work on?

  • Non-high-voltage systems

  • Every part

  • None

  • Interior components

Correct answer: Non-high-voltage systems

The Level 1 technician is trained to repair and maintain components of the EV that aren't related to the high-voltage systems. They can also handle the non-high-voltage components. 

This electrically aware individual spots hazards and knows how to avoid them. They can also operate or drive the EV. 

187.

If a fire breaks out in the shop, what plan should be followed?

  • NFPA 70E (National Fire Protection Association), OSHA (Occupational Safety and Health Administration), and regional/local regulations

  • NFPA 70E (National Fire Protection Association), ASE standards, and regional/local regulations

  • OSHA (Occupational Safety and Health Administration), ASE standards, and regional/local regulations

  • Follow the person in front of you

Correct answer: NFPA 70E (National Fire Protection Association), OSHA (Occupational Safety and Health Administration), and regional/local regulations

The shop shall have existing plans in place that align with the NFPA 70E (National Fire Protection Association). It's also important to follow all recommendations by OSHA (Occupational Safety and Health Administration).

Regional and local regulations are also important, although they are likely to match up with the two other standards. 

188.

Who needs to be trained regularly for emergency response and equipment usage in case of electrocution or injury?

  • All technicians

  • Level ONE technicians

  • Level TWO technicians

  • Level THREE technicians

Correct answer: All technicians

ASE requires regular emergency response training and equipment for all technicians working around EVs. This training must cover steps to handle electrocution and injury. OSHA 1910.335 regulations show that technicians must be able to prove their abilities to employers.

189.

What type of vehicle typically has an electric-only driving range between 150 and 400 miles?

  • BEV (Battery Electric Vehicle)

  • PHEV (Plug-in Hybrid Electric Vehicles)

  • HEV (Hybrid Electric Vehicles)

  • Gas-powered vehicles

Correct answer: BEV (Battery Electric Vehicle)

The BEV is powered only by a battery. It typically has a driving range between 150 and 400 miles per charge.

The PHEV and HEV contain an electric motor and battery. Hybrid vehicles may provide up to sixty miles of driving on electric-only, depending on the setup. Gas-powered vehicles don't contain a battery. 

190.

What can compromise the EV battery and lead to a safety concern?

  • Puncture 

  • Cold weather

  • Rain

  • Weight in the back seat

Correct answer: Puncture

If the battery gets punctured, the internal components may no longer be protected. This issue can lead to a serious safety risk.

The same is true if the battery becomes damaged or crushed. Most physical damage of this type occurs after a car accident with the EV. 

191.

Skills performed by the electrically aware employee can include which of the following?

  • Maintaining or repairing parts not related to the high-voltage systems of the EV

  • Marketing EVs for sale

  • Creating work orders for repair

  • Managing employees working on EVs

Correct answer: Maintaining or repairing parts not related to the high-voltage systems of the EV

Skills performed by the electrically aware individual can include any maintenance or repair of the standard automotive systems in the EV. They can also include operating (driving) the EV, handling components of the EV that aren't high-voltage, and encountering electrified propulsion vehicles while performing other job-related duties.

If you are simply marketing the EVs to sell, managing employees that work on EVs, or creating the repair work orders, you may not need specialized training, although it could still be useful.

192.

How is the high-voltage system secured from switching on again?

  • Through an approved Lockout/Tagout (LOTO) process

  • It can't be secured

  • With someone standing guard

  • By shutting down power to the EV

Correct answer: Through an approved Lockout/Tagout (LOTO) process

It's vital to follow the approved Lockout/Tagout (LOTO) process to ensure the high-voltage system doesn't switch on again. This step is essential to preventing electrical shock.

OSHA provides all employers with guidelines for following a proper Lockout/Tagout (LOTO) process.

193.

What warning light comes on if the battery is overheating?

  • Battery with a thermostat

  • Battery with a flame

  • Same thermometer symbol as with a gas-powered car

  • The word "TEMP" illuminated

Correct answer: Battery with a thermostat

With an electric vehicle, the overheating symbol is a battery with a thermostat. It's similar to the one that's used in cars with an internal combustion engine, except for the battery.

The battery temperature warning lights up when the battery temperature is too high. The car shouldn't be driven with this warning light on.

194.

What can be created during thermal runaway?

  • Toxic and flammable gases

  • Usable power

  • Sound waves

  • Electrical system glitches

Correct answer: Toxic and flammable gases

When undergoing thermal runaway, batteries can create toxic and flammable gases. At worst, these gases may ignite and lead to an explosion.

Even if the gases don't ignite, the fumes can be dangerous. For this reason, when an EV is involved in an accident, the scene should be clear of anyone except first responders. 

195.

Because repair and de-energizing procedures can be generic, what recommendations should a technician refer to before proceeding?

  • Original Equipment Manufacturer (OEM)

  • More experienced technicians

  • An employer's

  • OSHA

Correct answer: Original Equipment Manufacturer (OEM)

The Original Equipment Manufacturer (OEM) has the recommended repair and de-energizing procedure for each electric vehicle. These are the suggestions that should always override any other generic guidelines. 

More experienced technicians and your employer may have important guidelines to consider, but they never override instructions given by the manufacturer. All of these guidelines should fall in line with OSHA requirements. 

196.

If an energy-isolating device cannot be locked out, what must be done?

  • Tagout

  • Attendant stands guard

  • Component shouldn't be removed by the technician

  • Nothing

Correct answer: Tagout

If the energy-isolating device can't be locked out, tagout must be used. This procedure should be laid out in the employer's energy control program. This regulation is part of OSHA requirements (1910.147(c)(2)). 

In most cases, any item that can be locked out should be. The exception to that rule is if the employer can prove the employees are completely protected during a tagout procedure. 

197.

What is the purpose of the battery management system (BMS)?

  • Controls the charging and discharging of traction battery packs

  • Manages the operating temperature of the engine

  • Controls the speed of the motor

  • Converts power from the traction battery to be used by the accessories and auxiliary battery

Correct answer: Controls the charging and discharging of traction battery packs

The battery management system (BMS) is a high-voltage component that's responsible for controlling how the traction battery charges and discharges. It also sends information to the vehicle control unit (VCU) if the set parameters are exceeded.

The thermal cooling system is responsible for managing temperature, while the power electronics controller handles the speed of the motor. A DC/DC converter is necessary to convert power from the traction battery, so it can be used by the auxiliary battery and accessories.

198.

Which of the following ways can a technician identify high-voltage systems?

  • Vehicle labels

  • Ignition 

  • Infotainment center

  • Name of vehicle

Correct answer: Vehicle labels

Vehicle labels are designed to warn about high-voltage systems. You can also find this information on vehicle badging as well.

Other places to look include the underhood high-voltage cables, and possibly the charging port. If you are looking at a truck or a bus, high-voltage systems can be identified by the batteries on the roof or along the frame rails. 

199.

The battery packs in an EV can range in voltage between what amounts?

  • 100 V to 1,200 V DC

  • 50 V to 500 V DC

  • 25 V to 250 V DC

  • 250 V to 2,500 V DC 

Correct answer: 100 V to 1,200 V DC

The minimum voltage of an EV is typically 100 V. The majority of modern vehicles run anywhere from 100 V to 800 V. As production increases and ranges go higher, these numbers will also rise.

Commercial vehicles, such as large trucks or buses, can have a voltage that exceeds 1,200 V DC. 

200.

How can high-voltage cables be identified in an EV?

  • Color coding

  • Warnings on cables

  • Every EV has the same high-voltage cables

  • They can't be identified

Correct answer: Color coding

EV manufacturers are required to use orange-colored wires to designate which cables are high-voltage. It's best to consult the service manual of the particular vehicle you are working on to confirm which cables are high-voltage. 

The color coding warns of high voltage danger and should only be touched or repaired by qualified technicians. 

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