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Quiz Session - Attempts With Random Questions

ASE xEV (Level 2) Exam Questions

Page 9 of 10

161.

What technician(s) is responsible for safety and security when an xEV enters a work area?

  • Level 2 and Level 3

  • Level 1

  • Level 2

  • Level 3

Correct answer: Level 2 and Level 3

It's the responsibility of the Level 2 and Level 3 technicians to maintain safety and security any time that an xEV is in the work area. Level 1 technicians can assist, but are not responsible.

Technicians must ensure there's limited traffic and the appropriate physical barriers, signage, and boundary guarding practices are followed. 

162.

All of the following are true about the insulation of protective tools, including voltage test indicators, except:

  • Insulation can have minor damage and still be reliable

  • Insulation must be verified by test and inspection

  • Insulation should be rated for equipment and circuits it will be connected to

  • Insulation should be designed for the environment it's exposed to

Correct answer: Insulation can have minor damage and still be reliable

There should be no damage to the insulation. That's why tests and inspections must be performed on the insulation.

The insulation must also be rated for the equipment and circuits it's going to be connected to. Insulation should always be designed for the environment it's going to be exposed to. 

163.

What provides forehead protection while working on xEVs?

  • Face shields

  • Safety glasses

  • Welding helmet

  • Baseball cap

Correct answer: Face shields

Face shields offer forehead protection while working on xEVs. They must provide a 180-degree field of vision and be rated for arc thermal protection values. 

Arc Class 2 face shields are recommended. These are flame-resistant and are used for thermal isolation. 

164.

Protective footwear must be able to insulate wear from what type of current?

  • 18 kV at 60 Hz AC for 1 minute/ continuous 750 volts

  • 15 kV at 50 Hz AC for 1 minute/ continuous 550 volts

  • 20 kV at 70 Hz AC for 1 minute/ continuous 950 volts

  • 25 kV at 80 Hz AC for 1 minute/ continuous 1250 volts

Correct answer: 18 kV at 60 Hz AC for 1 minute/ continuous 750 volts

Technicians may wear boots or shoes for electrical protection when working near an energized xEV. These shoes must be able to protect the wearer from 18 kV at 60 Hz AC for 1 minute/ continuous 750 volts of current.

To do so, the shoes must be kept dry. They must also be clean and free of contaminants, such as oil or metal shavings. 

165.

What is the purpose of having one electrical lead with an insulated alligator clip?

  • The technician can use one hand for measurements

  • There's no purpose

  • To measure differing voltages

  • To provide padding for comfort

Correct answer: The technician can use one hand for measurements

With an insulated alligator clip on the electrical lead, the technician can use one hand during measurements. The lead with the alligator clip connects to the circuit's terminals or ground.

The other lead is used to place on the other terminal to take a reading. At any time, there should never be more than one hand holding the lead or touching the vehicle ground. 

166.

What must the high-voltage battery pack be constructed with?

  • Ingress Protection (IP)-rated casings

  • Teflon

  • Rubber

  • Conductive materials

Correct answer: Ingress Protection (IP)-rated casings

All high-voltage battery packs and components must be cased with materials that have an Ingress Protection (IP) rating between IP65 and IP68. This level of protection ensures that water and dust don't get inside. 

Additionally, the battery and high-voltage components must be inspected to ensure there aren't cracks or damaged seals. This type of damage can lead to dust or water infiltration. 

167.

What tool makes it possible for the technician to take measurements with one hand?

  • Electrical lead with an insulated alligator clip

  • Personal Protective Equipment (PPE)

  • CAT-rated multimeter

  • Insulated hand tools

Correct answer: Electrical lead with an insulated alligator clip

With one electrical lead equipped with an insulated alligator clip, the technician can take measurements one-handed. The lead with the clip gets connected to the circuit's terminal or ground, with the other lead in contact with another terminal to get a reading. 

Personal Protective Equipment (PPE), a CAT-rated multimeter, and insulated hand tools all have their parts in working with xEVs, but do nothing to help take the measurements one-handed. 

168.

What secures the high-voltage system from switching on unexpectedly?

  • Approved Lockout/Tagout (LOTO) process

  • Rubber gloves

  • Retrieval hook

  • Putting key fob in pocket

Correct answer: Approved Lockout/Tagout (LOTO) process

By using the approved Lockout/Tagout (LOTO) process, you prevent the high-voltage system from turning on during service. After parts have been de-energized and removed, they must be secured through this process. 

Both rubber gloves and a retrieval hook are important safety features, but they won't prevent the system from turning back on. You also don't want to put the key fob anywhere within range of the vehicle. 

169.

When should insulated hand tools be inspected?

  • Before every use

  • After every use

  • Once a week

  • Never

Correct answer: Before every use

Insulated hand tools should be inspected before each use. During the inspection, technicians must make sure there's no damage.

If there's damage, the tool may not be able to fulfill its intended function, leaving a risk of an incident. 

170.

Which of the following items doesn't need to be secured by the technician?

  • Retrieval stick

  • Fuses

  • Relays

  • Manual Service Disconnect (MSD)

Correct answer: Retrieval stick

The retrieval stick is a tool offered by some employers to use in the case of electrical shock. It has nothing to do with securing high-voltage parts on a vehicle.

Technicians are responsible for placing all removed fuses, relays, and the Manual Service Disconnect (MSD) in a secured location. These parts should ideally be placed under lock and key to ensure that others don't reinstall them and electrify the systems. 

171.

What is the title given to a Level 3 technician?

  • High-voltage vehicle and battery technician

  • High-voltage vehicle technician

  • Electrically aware person

  • EV technician

Correct answer: High-voltage vehicle and battery technician

The Level 3 person is considered a high-voltage vehicle and battery technician. They can diagnose and repair high-voltage batteries, plus separate individual battery modules.

The Level 2 technician is known as a high-voltage vehicle technician. Level 1 technicians are electrically aware people. 

172.

If a high-energy fuse in a test tool is bad, what should happen?

  • Replace the fuse

  • Replace the tool

  • Nothing

  • Bypass the fuse

Correct answer: Replace the fuse

The high-energy fuses in test tools are meant to keep energy generated by an electrical short contained. If a fuse goes bad, it must be replaced with one of the same amperage rating and quality. 

You don't want to substitute it with one of lower quality or a fuse that's not recommended. It's also not safe to bypass the fuse protection. 

173.

At what mA range does the threat of respiratory arrest start to become a concern?

  • 17–99 mA

  • 6–16 mA

  • 100–2,000 mA

  • Over 2,000 mA

Correct answer: 17–99 mA

Between 17–99 mA, the concerns include respiratory distress. The individual will experience extreme pain from this shock and suffer from severe muscle contractions.

They also won't be able to let go of the source, keeping them in the circuit. Death is possible at this point. 

174.

As a person is electrocuted and the skin is burned, what happens to the body's resistance?

  • It decreases

  • It increases

  • Nothing happens

  • It varies depending on the situation

Correct answer: It decreases

The average internal resistance of the human body is between 300 and 1,000 ohms. Resistance of dry skin is typically measured between 1,000 and 100,000 ohms. 

As the person gets burnt, blistered, or wet, the resistance drops dramatically. That's what makes it even more dangerous as the victim gets burnt during electrocution. 

175.

When should lineman's gloves be worn by technicians?

  • When working near all xEV high-voltage components

  • When working on all xEV high-voltage components

  • When working on xEV high-voltage batteries

  • Never

Correct answer: When working near all xEV high-voltage components

Lineman's gloves are known as electrical insulating gloves. These should be worn by a technician whenever they work near any xEV high-voltage component.

The recommended safety gloves are rated Class 0 electrical. 

176.

When treating a victim of high-voltage shock, what is the first step?

  • Call 911

  • Touch the victim

  • Start CPR

  • Evacuate the building 

Correct answer: Call 911

Before doing anything else, it's vital that 911 is called. If there are multiple people, you can have someone else call 911 while you start treating the victim.

You must also make sure that the high-voltage power is disconnected at the source. If you are unable to disconnect the power source, you can separate the victim from the source with an insulated retrieval hook. 

177.

To create an electrically safe work condition, which of the following needs to be done?

  • Parts must be tested to ensure the absence of voltage

  • Personal Protective Equipment (PPE) is worn

  • Conductive barriers are used in energized areas

  • LEVEL ONE technicians are working on high-voltage components

Correct answer: Parts must be tested to ensure the absence of voltage

If the work condition is electrically safe, all of the parts removed have been tested to ensure the absence of voltage. The technician can work without Personal Protective Equipment (PPE) on these parts because they aren't charged.

An electrically safe work condition also has the removed, de-energized parts either locked up or tagged in accordance with OSHA regulations. 

178.

Why are warning labels placed on electric vehicles?

  • To indicate danger of electrical current

  • To help you understand the make or model

  • To explain trim level features

  • To explain servicing procedures

Correct answer: To indicate danger of electrical current

Warning labels are placed on electric vehicles to indicate the potential danger of electrical current. They are placed by the Original Equipment Manufacturer (OEM).

The warning labels don't indicate the make or model of the vehicle. They also won't help you understand the trim level features or explain servicing procedures. 

179.

When the high-voltage system is de-energized, what is the connection to the high-voltage battery?

  • It's isolated from the rest of the system

  • It is removed from the EV

  • It remains connected to the system

  • It is connected and sending power, but it's safe to work on

Correct answer: It's isolated from the rest of the system

The high-voltage battery remains charged after de-energizing the system. However, it will be isolated from the rest of the system. Therefore, power can't transfer to the remainder of the system.

Other components are safe to work on if all of the Original Equipment Manufacturer (OEM) procedures have been followed. The high-voltage battery may only be worked on by a Level 3 technician. 

180.

At what milliamp (mA) electrical shock will the person feel a slight tinging sensation?

  • 1 mA

  • 5 mA

  • 10 mA

  • 25 mA

Correct answer: 1 mA

At 1mA, the person could feel a slight tingling sensation. While this situation may not be considered fatal, it can still be dangerous in certain conditions, such as if the person has health issues.

At 5 mA, a slight shock can be felt, but it usually doesn't create too much pain. At this level, the person should still be able to let go of the source. 

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