Master Hybrid and Electric Vehicle Maintenance and Troubleshooting Techniques

Question 1

For retrieving fault codes from hybrid and electric vehicles, which diagnostic tool is commonly utilized?

Accepted Answer

OBD-II scanner

Answer

Multimeter

Answer

Battery tester

Answer

Fuel injector cleaner

Question 2

When troubleshooting a hybrid vehicle experiencing power loss, which component should be inspected as a priority?

Accepted Answer

Hybrid battery

Answer

Spark plugs

Answer

Fuel filter

Answer

Transmission

Question 3

In the context of electric vehicles, which battery technology is prevalent?

Accepted Answer

Lithium-ion

Answer

Lead-acid

Answer

Nickel-metal hydride

Answer

Alkaline

Question 4

In hybrid and electric vehicles, which system is responsible for converting alternating current (AC) to direct current (DC)?

Accepted Answer

Inverter

Answer

Charging system

Answer

Battery management system

Answer

Electric motor

Question 5

Which factors can influence the range of an electric vehicle?

Accepted Answer

All of the aforementioned factors

Answer

Battery capacity

Answer

Driving habits

Answer

Temperature

Question 6

Which diagnostic tool is specifically designed for retrieving and analyzing data from hybrid and electric vehicles?

Accepted Answer

Hybrid/Electric Vehicle Diagnostic Tool

Answer

Multimeter

Answer

OBD-II scanner

Answer

Voltmeter

Question 7

In a hybrid or electric vehicle, what is the main function of the power inverter?

Accepted Answer

Converts DC power from the battery to AC power for the motor

Answer

Converts AC power from the motor to DC power for the battery

Answer

Regulates the voltage of the battery

Answer

Controls the speed of the electric motor

Question 8

Which component in a hybrid or electric vehicle is responsible for storing electrical energy and supplying power to the electric motor?

Accepted Answer

Battery

Answer

Fuel tank

Answer

Capacitor

Answer

Generator

Question 9

When troubleshooting a hybrid or electric vehicle, it is vital to:

Accepted Answer

Apply a systematic approach, isolate the issue, and perform thorough testing

Answer

Rely only on diagnostic codes

Answer

Begin by replacing all major components

Answer

Guess and check until the problem is resolved

Question 10

Which of the following is NOT a typical maintenance task for hybrid and electric vehicles?

Accepted Answer

Flushing and replacing transmission fluid

Answer

Checking and replacing brake pads

Answer

Inspecting and cleaning battery terminals

Answer

Monitoring tire pressure

Question 11

What is the primary objective of utilizing a hybrid vehicle?

Accepted Answer

To lower fuel consumption and reduce emissions

Answer

To enhance acceleration performance

Answer

To increase driving range

Answer

To improve overall vehicle reliability

Question 12

In servicing hybrid or electric vehicles, which safety precaution is paramount?

Accepted Answer

Use insulated tools when handling high-voltage components.

Answer

Always work in pairs to ensure safety.

Answer

Wear rubber gloves when working on the vehicle.

Question 13

In a hybrid vehicle, what is the main function of the power control module?

Accepted Answer

Manages power flow between the battery, electric motor, and engine

Answer

Monitors the electric motor's health

Answer

Regulates the vehicle's electrical system voltage

Answer

Powers the vehicle's accessories

Question 14

When working on hybrid or electric vehicles, which safety precaution is paramount?

Accepted Answer

Disconnecting all power sources

Answer

Ensuring a level work surface

Answer

Donning insulated gloves

Answer

Employing a voltage tester

Question 15

On hybrid or electric vehicles, what is the function of the distinctive orange safety cable?

Accepted Answer

Isolating the high-voltage battery

Answer

Establishing a connection to a power source

Answer

Grounding the vehicle

Answer

Jump-starting the vehicle

Question 16

For retrieving fault codes from hybrid or electric vehicle systems, which diagnostic tool is employed?

Accepted Answer

Scan tool

Answer

Multimeter

Answer

Oscilloscope

Answer

Voltage tester

Question 17

For charging electric vehicles, what type of charger is most commonly used?

Accepted Answer

Level 2 charger

Answer

Level 1 charger

Answer

Level 3 charger

Answer

Quick charger

Question 18

In hybrid vehicles, what is the primary advantage offered by regenerative braking systems?

Accepted Answer

Enhanced fuel efficiency

Answer

Improved braking performance

Answer

Reduced emissions

Answer

Extended lifespan of the battery

Question 19

In hybrid vehicles, what is the primary function of the CAN bus system?

Accepted Answer

Facilitating data transmission between modules

Answer

Regulating the flow of power between components

Answer

Monitoring and diagnosing system performance

Answer

Connecting the display panel to the vehicle's computer

Question 20

Which diagnostic tool is specifically designed and essential for reading and clearing fault codes stored in the electronic control modules (ECMs) of hybrid and electric vehicles?

Accepted Answer

Code reader

Answer

Multimeter

Answer

Oscilloscope

Answer

Battery tester

Question 21

In a hybrid or electric vehicle, what is the primary function of the power inverter?

Accepted Answer

Converts DC power to AC power

Answer

Converts alternating current (AC) power to direct current (DC) power

Answer

Controls the operation of the electric motor

Answer

Stores electrical energy in the vehicle's battery

Question 22

In hybrid and electric vehicles, what type of cooling system is commonly used to regulate the temperature of the high-voltage battery and prevent overheating?

Accepted Answer

Liquid-cooled system, using coolant to absorb and dissipate heat from the battery.

Answer

Air-cooled system, using fans to circulate air around the battery.

Answer

Passive cooling system, relying on natural heat dissipation through the battery's casing.

Answer

Cryogenic cooling system, using extremely low temperatures to maintain the battery's optimal operating range.

Question 23

What is the primary purpose of the regenerative braking system in hybrid and electric vehicles?

Accepted Answer

To capture energy during braking and use it to recharge the vehicle's battery.

Answer

To enhance braking performance and reduce wear on the mechanical brakes.

Answer

To provide additional power during acceleration, boosting the vehicle's overall performance.

Answer

To improve handling during cornering, enhancing the vehicle's stability and control.

Question 24

For servicing hybrid or electric vehicles, which protective gear is essential to prevent electric shock?

Accepted Answer

Insulated rubber gloves

Answer

Cotton gloves

Answer

Leather work gloves

Answer

Safety glasses

Question 25

In a hybrid vehicle, what is the primary function of the inverter?

Accepted Answer

Converting DC power from the battery to AC power for the electric motor

Answer

Converting AC power from the electric motor to DC power for the battery

Answer

Regulating the flow of electricity between the battery and the electric motor

Answer

Providing supplemental power during acceleration

Question 26

When diagnosing hybrid or electric vehicles, which tool is commonly used to retrieve fault codes?

Accepted Answer

OBD-II scanner

Answer

Multimeter

Answer

Oscilloscope

Answer

Voltmeter

Question 27

For maintaining optimal battery temperature in hybrid or electric vehicles, which cooling system is commonly utilized?

Accepted Answer

Both air-cooled and liquid-cooled systems

Answer

Air-cooled system

Answer

Liquid-cooled system

Answer

Passive cooling system

Question 28

In a hybrid or electric vehicle, which component is responsible for managing the flow of energy?

Accepted Answer

Battery management system (BMS)

Answer

Power control module (PCM)

Answer

Traction motor

Answer

Inverter

Question 29

When working on a high-voltage hybrid or electric vehicle, what is the most important safety precaution to take?

Accepted Answer

Wear insulated gloves and use non-conductive tools

Answer

Disconnect the 12-volt battery

Answer

Use a high-voltage tester

Answer

Wear a respirator

Question 30

Which of the following is a key environmental benefit of using hybrid and electric vehicles on a large scale?

Accepted Answer

Reduced greenhouse gas emissions

Answer

Increased air pollution

Answer

Depletion of non-renewable resources

Answer

Excessive waste generation

Question 31

Which of the following is the foremost safety precaution when working on hybrid and electric vehicles?

Accepted Answer

Donning appropriate personal protective equipment (PPE) and utilizing insulated tools

Answer

Working on the vehicle while it is operational

Answer

Disconnecting the battery without observing the specified wait time

Question 32

Which diagnostic equipment is commonly used to retrieve trouble codes from hybrid and electric vehicles?

Accepted Answer

OBD-II scanner

Answer

Pressure gauge

Answer

Multimeter

Answer

Oscilloscope

Question 33

What is the primary function of a high-voltage isolation relay in a hybrid vehicle?

Accepted Answer

To isolate the high-voltage battery from the rest of the vehicle

Answer

To regulate the voltage supplied to the electric motor

Answer

To charge the 12-volt battery

Question 34

Which symptom may indicate a faulty battery management system in an electric vehicle?

Accepted Answer

Premature depletion of the battery

Answer

Suspension noise

Answer

Transmission slippage

Answer

Engine misfire

Question 35

What distinctive maintenance requirement is specific to electric vehicles compared to traditional vehicles?

Accepted Answer

Regular cleaning and inspection of electrical connections

Answer

Oil changes

Answer

Spark plug replacement

Question 36

What is the purpose of a voltage converter in a hybrid vehicle?

Accepted Answer

To transform high-voltage DC power from the battery into low-voltage AC power for the electric motor

Answer

To charge the 12-volt battery

Answer

To regulate coolant flow

Question 37

Which tool is appropriate for measuring the resistance of an electric motor?

Accepted Answer

Multimeter

Answer

Compression tester

Answer

Hydrometer

Answer

Timing light

Question 38

When working on a hybrid or electric vehicle, which protective equipment is essential for safeguarding against high voltage hazards?

Accepted Answer

High-voltage insulated gloves

Answer

Rubber gloves

Answer

Standard work gloves

Answer

Welding gloves

Question 39

In a hybrid vehicle, what is the fundamental function of the traction battery?

Accepted Answer

Storing electrical energy to power the electric motor

Answer

Providing backup power for lighting systems

Answer

Initiating engine啟動

Question 40

For retrieving diagnostic trouble codes from a hybrid or electric vehicle's control module, which specialized tool is commonly employed?

Accepted Answer

CAN (Controller Area Network) scanner

Answer

Compression tester

Answer

Oscilloscope

Answer

Multimeter

Question 41

When servicing a hybrid or electric vehicle, which action goes against recommended safety protocols?

Accepted Answer

Directly handling high-voltage components without proper insulation

Answer

Disconnecting the battery before commencing work

Answer

Employing proper grounding techniques

Answer

Wearing high-voltage insulated gloves

Question 42

Electric vehicles typically utilize which type of charging system?

Accepted Answer

Onboard charger

Answer

Alternator

Answer

Capacitor

Answer

Fuel cell

Question 43

In a hybrid vehicle, what is the primary function of the DC-DC converter?

Accepted Answer

Converting high-voltage DC power to low-voltage DC power for auxiliary systems

Answer

Regulating the voltage of the electrical system

Answer

Charging the traction battery

Question 44

What is the main purpose of the regenerative braking system in a hybrid or electric vehicle?

Accepted Answer

Capturing energy during braking and converting it into electrical energy

Answer

Reducing noise levels

Answer

Enhancing vehicle handling

Question 45

When working on hybrid or electric vehicles, which safety precaution is NOT advisable?

Accepted Answer

Touching bare wires without gloves

Answer

Disconnecting the battery before servicing

Answer

Using a voltage meter to check for electricity

Answer

Wearing insulated gloves

Question 46

Which diagnostic tool is specifically designed to read error codes from hybrid and electric vehicles' control modules?

Accepted Answer

CAN scanner

Answer

Multimeter

Answer

Diagnostic trouble code (DTC) reader

Answer

Oscilloscope

Question 47

In a hybrid or electric vehicle, what is the main function of the traction battery?

Accepted Answer

To power the electric motor

Answer

To provide lighting for the vehicle

Answer

To start the engine

Answer

To recharge the auxiliary battery

Question 48

Which of the following symptoms may indicate a potential cooling system issue in a hybrid or electric vehicle?

Accepted Answer

Elevated coolant temperature gauge reading

Answer

Unusual noises from the engine

Answer

Hesitation or jerking during acceleration

Answer

Reduced fuel economy

Question 49

What is the primary purpose of the regenerative braking system in a hybrid or electric vehicle?

Accepted Answer

To transform kinetic energy into electrical energy

Answer

To increase the range of the vehicle

Answer

To improve braking performance

Answer

To reduce brake wear

Question 50

When replacing the traction battery in a hybrid or electric vehicle, what is the recommended procedure?

Accepted Answer

Follow the manufacturer's specified guidelines and use approved equipment

Answer

Replace the battery with one of a different voltage or capacity

Answer

Use a standard battery charger to recharge the old battery

Question 51

Which of the following tools is not essential for troubleshooting electrical issues in hybrid or electric vehicles?

Accepted Answer

Vise grips

Answer

Insulated screwdrivers

Answer

Voltage tester

Answer

Multimeter

Question 52

When troubleshooting a problem with the charging system of a hybrid or electric vehicle, what is the initial step?

Accepted Answer

Check the voltage of the battery

Answer

Inspect the wiring harness

Answer

Replace the alternator