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Quiz Session - Attempts With Random Questions

ASE xEV (Level 1) Exam Questions

Page 6 of 10

101.

Which of the following helps maximize CPR efforts?

  • Ensure proper hand placement

  • Create an erratic rhythm of compressions

  • Lean on the victim while pushing

  • Push as deep as possible during compressions

Correct answer: Ensure proper hand placement

The heel of your hand should be in the center of the person's chest. Interlace your fingers together and kneel down beside the person, while spreading your knees about shoulder-width apart. 

You don't want to have any interruptions in the rhythm of chest compressions and you shouldn't lean on the victim. It's also important to make sure you don't push deeper than recommended. 

102.

What is the name of the component that converts high-voltage DC current to the lower voltage needed to run accessories and recharge the auxiliary battery?

  • DC/DC converter

  • Onboard charger

  • Power electronics controller

  • Traction battery pack

Correct answer: DC/DC converter

This EV component is responsible for converting the high-voltage DC power coming out of the traction battery pack to the lower voltage DC power required to run the accessories and recharge the auxiliary battery.

The onboard charger converts AC power to DC power and regulates how much is given to the battery. The power electronics controller controls the speed produced by the electric motor, while the traction battery pack stores the electricity needed for the motor to run.

103.

Which of the following is not a characteristic of lithium-ion batteries?

  • Low power-to-weight ratio

  • High energy efficiency

  • Higher temperature performance

  • Low self-discharge

Correct answer: Low power-to-weight ratio

The lithium-ion battery has a high power-to-weight ratio. It is also highly energy efficient.

Further characteristics of the lithium-ion battery include higher temperature performance and low self-discharge. The lithium-ion battery contains electrolytes and toxic substances that could cause fires, explosions, or a dangerous release of gases when mishandled. 

104.

What does the warning symbol with a turtle mean?

  • Limited power

  • Speed up

  • Slow down

  • Charge the battery

Correct answer: Limited power

The turtle warning symbol signifies limited power from the EV. The vehicle may go into a type of limp mode to preserve power. This warning is dangerous, especially if it is red-colored versus amber. In some cases, there's a serious electrical malfunction, so the EV should be looked at by a qualified technician. 

When the battery needs to be charged, there's a battery symbol with a lightning bolt through it. 

105.

The electrolytes in lithium-ion batteries are considered everything but which of the following?

  • Compostable

  • Toxic

  • Corrosive

  • Flammable

Correct answer: Compostable

The electrolytes that make up a lithium-ion battery are toxic and extremely dangerous. They are also corrosive and flammable.

If a lithium-ion battery gets overcharged, overheated, or damaged, it can lead to a potential fire or explosion. There's also the chance for toxic gases to be released. 

106.

Why should the removed fuses, relays, and Manual Service Disconnect (MSD) be in a secured location under lock and key, when possible?

  • To prevent others from reinstalling the items without the technican's knowledge

  • So the car can't be driven away

  • To keep others from working on the vehicle

  • So repairs go faster

Correct answer: To prevent others from reinstalling the items without the technican's knowledge

If these items aren't locked up, it becomes too easy for someone else to reinstall them without the technician knowing. If this occurs, electric shock becomes a risk. 

Having the keys locked away prevents the vehicle from being operated. These protocols don't keep others from working on the vehicle or make the repairs go faster. 

107.

Where can special warning labels be found?

  • High-voltage battery

  • Auxiliary battery

  • Heated seats

  • Transmission 

Correct answer: High-voltage battery

Manufacturers place labels on high-voltage batteries to indicate potential danger. The warning label should include a lightning symbol with an arrow pointing downward.

With these warning labels in places, technicians know what parts can cause a dangerous electrical current. 

108.

How should an EV with a damaged battery be stored?

  • Minimum of 50 feet from other combustible and flammable material

  • In the shop with other EVs

  • Outside the shop door

  • Minimum of ten feet from other vehicles

Correct answer: Minimum of 50 feet from other combustible and flammable material

Once a battery has been damaged or punctured, it needs to be stored properly. It should never get within 50 feet of other combustible or flammable materials.

The NTSB specifies that even the EV in the junkyard must be kept at least 50 feet from other vehicles. This space is required because of the heightened risk of fire or explosion. 

109.

When an EV battery has been punctured or damaged, how far must the vehicle be isolated from other flammable and combustible materials?

  • At least 50 feet

  • At least 40 feet

  • At least 30 feet

  • At least 20 feet

Correct answer: At least 50 feet

If the EV battery were to start on fire, you don't want it close to anything else that's flammable or combustible. It's recommended to have a minimum of 50 feet between those items and the EV battery.

Anything less than this could lead to a disaster if the fire were to spread. 

110.

High-voltage components are marked with a lighting bolt and arrow warning sign that is recognized by which countries?

  • Worldwide

  • United States and Canada

  • Canada and Mexico

  • Mexico and the United States

Correct answer: Worldwide

The high-voltage warning sign is internationally understood. It features a yellow triangle, with a lighting bolt and an arrow facing downward.

When this warning sign is present, it means that there are high-voltage systems that could lead to electric shock and injury. 

111.

What is a hot stick made from?

  • Fiberglass

  • Metal

  • Wood

  • Plastic

Correct answer: Fiberglass

The pole of a hot stick is fiberglass. It's an insulated pole that's filled with foam, making it non-conductive and safe to use during electrical shock situations.

While wood and plastic are also usually non-conductive, these wouldn't make the ideal materials for an emergency situation. Additionally, metal is a conductive material, so it would only add more threat to the situation. 

112.

What part of the air conditioning system contains high voltage and can be dangerous?

  • Compressor

  • Evaporator

  • AC lines

  • Condenser

Correct answer: Compressor

The air conditioning compressor in an EV contains high-voltage current that is dangerous. Proper safety procedures must be followed when working with the AC system.

Other parts of the AC system don't carry the same high-voltage current. Care should always be taken when working with EV air conditioning. 

113.

What part of the EV contains a high-voltage warning label?

  • Traction battery

  • Auxiliary battery

  • Radio

  • Power windows

Correct answer: Traction battery

The traction battery contains high-voltage and should only be worked on by qualified technicians. It has a high-voltage warning label.

While other parts of the electrical system, such as the auxiliary battery, radio, and power windows, should also be worked on by qualified professionals, they don't contain high-voltage and don't pose the same risks. 

114.

What doesn't lead to electrical abuse of an ESS?

  • Dropping the battery

  • Overcharging the battery

  • Discharging the battery rapidly

  • Charging the battery with too much voltage

Correct answer: Dropping the battery

Dropping the battery causes mechanical abuse. The battery becomes physically compromised and can fail.

Electrical abuse occurs if the battery is overcharged or discharged rapidly. It can also occur from applying too much voltage to a battery and charging it quickly. 

115.

Why do lockout/tagout procedures exist?

  • To prevent fatal electrical shocks

  • To protect the battery

  • To ensure more costly damage doesn't occur

  • To lower the shop's insurance rates

Correct answer: To prevent fatal electrical shocks

By following the lockout/tagout procedures, technicians are protected from fatal electrical shock. Without these procedures in place, the work environment can become re-energized during a repair.

Following these procedures can also protect the battery and prevent costly damage, but that's not the purpose of performing the steps. Also, these procedures have nothing to do with insurance rates. 

116.

What prevents fire and electric shock hazards with electric vehicles?

  • Redundant systems

  • Water

  • Fire extringuisher

  • Orange cables

Correct answer: Redundant systems

Electric vehicles are created with redundant systems by the Original Equipment Manufacturer (OEM). These redundant systems are designed to reduce the risk of fire and electric shock.

Fire extinguishers and water are needed to put out fires after an incident. The orange cables are important because they point out which ones contain high-voltage. 

117.

What is the term used to describe a mechanical device that physically prevents the release or transmission of energy?

  • Energy isolating device

  • Roadblock device

  • Electrical stop device

  • Power off device

Correct answer: Energy isolating device

An energy isolating device is a mechanical component that physically prevents energy from being released or transmitted. The type of device used depends on the environment and circumstances. 

Examples of this device include a manually-operated electrical circuit breaker or a disconnect switch. It could also be a line valve or a block.    

118.

What can the toxic and flammable gases created after an accident do that may lead to a safety risk?

  • Ignite

  • Remain contained

  • Dissipate

  • Enter the atmosphere

Correct answer: Ignite

Following an accident, thermal runaway can create toxic and flammable gases. These gases can reach excessive levels and ignite.

After any accident, emergency personnel should be contacted. The first responders can determine if the vehicle is safe or needs to be looked at.

119.

What systems on electrified propulsion vehicles (xEVs) are dangerous?

  • Both high-voltage AC and DC systems

  • Only high-voltage AC systems

  • Only high-voltage DC systems

  • Neither high-voltage AC nor DC systems

Correct answer: Both high-voltage AC and DC systems

Both high-voltage AC and DC systems can lead to personal injury, electric shock, severe burns, and death if not handled safely. Working with alternating voltages over 30 volts RMS and direct voltages exceeding 60 volts are considered dangerous and should only be attempted with appropriate safety measures in place. 

120.

According to OSHA, what is the minimum unlocking strength of a tagout device?

  • 50 pounds

  • 25 pounds

  • 75 pounds

  • 5 pounds

Correct answer: 50 pounds

OSHA dictates that tagout devices must have a substantial self-locking mechanism that prevents accident or inadvertent removal. It must have a minimum unlocking strength of at least 50 pounds. 

OSHA recommends having a one-piece device that's tolerant of all environments. The recommendation is to use a nylon cable tie. 

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