Question 1

Hybrid electric vehicles may be a parallel hybrid or a series hybrid design.

Accepted Answer

Hybrid electric vehicles can be designed as either parallel hybrids or series hybrids, depending on the specific configuration of the electric motor and gasoline engine. In a parallel hybrid, both the electric motor and gasoline engine can power the wheels simultaneously, while in a series hybrid, the gasoline engine acts solely as a generator to charge the batteries that power the electric motor.

Question 2

The main advantage of the ISG system is:
A) Can be used to provide accessory power if the battery fails.
B) Allows for automatic stop/start functions.
C) Increase the life of the brake linings.
D) All of the above.

Accepted Answer

B

Question 3

In a hybrid vehicle the motor/generator recovers the heat energy used to brake by converting rotational energy into kinetic energy through a system of electric motors and generators.

Accepted Answer

In a hybrid vehicle, the motor/generator recovers energy during braking by converting kinetic energy into electrical energy, not the other way around. This process is known as regenerative braking.

Question 4

In a parallel hybrid vehicle, there is a direct mechanical connection between the engine and the wheels.

Accepted Answer

In a parallel hybrid vehicle, both the internal combustion engine and the electric motor can directly drive the wheels, allowing for a direct mechanical connection between the engine and the wheels.

Question 5

In most hybrid vehicles, the addition of the internal combustion engine meant the vehicle could not be classified as a(n) ____ vehicle.
A) zero emission
B) low-emission
C) ultra low-emission
D) electric

Accepted Answer

Hybrid vehicles combine an internal combustion engine with an electric motor, meaning they do emit some pollutants, unlike zero-emission vehicles which typically refer to fully electric vehicles that do not emit any pollutants from their powertrain.

Question 6

A reformer on board a fuel cell powered vehicle is used to produce hydrogen from a fuel sources such as methanol.

Accepted Answer

This statement is true. A fuel cell powered vehicle contains a reformer which converts a fuel source such as methanol into hydrogen gas to power the fuel cell.

Question 7

A hybrid vehicle may also incorporate an engine that uses lean burn technology to maximize efficiency.

Accepted Answer

Lean burn technology helps to maximize the efficiency of an engine by burning fuel at a leaner ratio, which reduces emissions and saves fuel. This technology is often used in hybrid vehicles to further enhance their efficiency.

Question 8

The ISG is a singe phase AC motor.

Accepted Answer

The ISG (Integrated Starter Generator) can be a part of a hybrid or electric vehicle's powertrain, functioning in both starting the internal combustion engine and generating electricity, and is not limited to being a single-phase AC motor. It can be designed using various types of electric motors, including three-phase AC motors, depending on the application.

Question 9

Technician A says the compressed hydrogen system requires a reformer to cool the fuel cell. Technician B says a fuel cell produces electrical energy by breaking down hydrogen atoms into electrons and protons. Who is correct?
A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Accepted Answer

Technician B is correct. A fuel cell produces electrical energy by breaking down hydrogen atoms into electrons and protons. A reformer is not required to cool the fuel cell, but rather to convert other fuels such as natural gas into hydrogen gas that can be used by the fuel cell.

Question 10

The primary advantage of an electric vehicle is a drastic reduction in ____ and emission levels.
A) fuel inefficiency
B) noise
C) traffic
D) speeding

Accepted Answer

Electric vehicles are much quieter than gasoline or diesel vehicles, making them a more peaceful choice for drivers and pedestrians alike. However, electric vehicles will not necessarily reduce traffic congestion or speeding on their own. They can, however, help to reduce emissions and fuel inefficiency compared to traditional vehicles, as they do not rely on fossil fuels.

Question 11

____ braking means that the braking energy is turned back into electricity instead of heat.
A) Back
B) Energetic
C) Thermal
D) Regenerative

Accepted Answer

Regenerative braking is a mechanism that converts the vehicle's kinetic energy into electrical energy, which is then stored in a battery for later use, instead of dissolving it as heat energy.

Question 12

Regenerative braking is a method of capturing the vehicles thermal energy in the batteries while it slows down.

Accepted Answer

Regenerative braking captures the vehicle's kinetic energy and converts it into electrical energy, which is then stored in the battery, not thermal energy.

Question 13

Electric vehicles power the motor by:
A) A generator.
B) A battery pack.
C) An engine.
D) None of these choices.

Accepted Answer

Electric vehicles power the motor through a battery pack which provides electricity to turn the electric motor.

Question 14

In a hybrid system, the __________ __________ is a device that stores energy as electrostatic charge and is the primary device in the power supply during hill climbing, acceleration, and the recovery of braking energy.
A) Battery pack.
B) Motor Generator.
C) DC Inverter.
D) Ultra capacitor.

Accepted Answer

In a hybrid system, an ultra capacitor is a device that stores energy as electrostatic charge and is the primary device in the power supply during hill climbing, acceleration, and the recovery of braking energy. The battery pack provides overall energy storage and provides power during normal driving conditions, while the motor generator converts kinetic energy into electrical energy during coasting and braking. The DC inverter is responsible for converting DC power to AC power to drive the motor. Therefore, the correct answer is D) Ultra capacitor.

Question 15

In a PEM fuel cell, which side does the oxygen enter from?
A) Gate
B) Anode
C) Drain
D) Cathode

Accepted Answer

In a PEM fuel cell, oxygen enters through the cathode side where it combines with hydrogen ions (protons) and electrons to form water. The anode side is where hydrogen fuel is introduced and split into protons and electrons.

Question 16

In a full hybrid HEV, which component is responsible for recharging the 12-volt battery from the 300-volt direct current system?
A) The battery control module
B) The belt driven generator
C) The DC/DC converter
D) The LV control module

Accepted Answer

The DC/DC converter is responsible for converting the high voltage direct current from the main battery pack to the lower voltage needed to charge the 12-volt battery that powers the vehicle's accessories and systems.

Question 17

In the ISG system the stator is attached to the engine block and coils that are formed by laser-welding copper bars.

Accepted Answer

The statement is true.

Question 18

The ultra capacitor is a device that stores energy as electrostatic charge.

Accepted Answer

Ultra capacitors, also known as supercapacitors or electrochemical capacitors, store energy as electrostatic charge.

Question 19

The high-voltage service plug:
A) Disconnects the inverter/converter from the motor generators.
B) Disconnects the auxiliary battery from the HV battery.
C) Disconnects the HV battery from the system.
D) Provides a connection for the battery charger.

Accepted Answer

The high-voltage service plug is designed to disconnect the HV battery from the rest of the system. This is to prevent any accidental shocks or electrical surges during maintenance or repair work. A and B are incorrect because they do not describe the function of the high-voltage service plug. D is incorrect because the high-voltage service plug is not used for connecting the battery charger.

Question 20

The protein exchange membrane is the most common fuel cell design.

Accepted Answer

The most common fuel cell design is the proton exchange membrane (PEM) fuel cell, not the "protein exchange membrane."

Quiz 16: Vehicles With Alternative Power Sourceshybrid and High-Voltage System Service

Hybrid electric vehicles may be a parallel hybrid or a series hybrid design.

The main advantage of the ISG system is:

In a hybrid vehicle the motor/generator recovers the heat energy used to brake by converting rotational energy into kinetic energy through a system of electric motors and generators.

In a parallel hybrid vehicle, there is a direct mechanical connection between the engine and the wheels.

In most hybrid vehicles, the addition of the internal combustion engine meant the vehicle could not be classified as a(n) ____ vehicle.

A reformer on board a fuel cell powered vehicle is used to produce hydrogen from a fuel sources such as methanol.

A hybrid vehicle may also incorporate an engine that uses lean burn technology to maximize efficiency.

The ISG is a singe phase AC motor.

Technician A says the compressed hydrogen system requires a reformer to cool the fuel cell. Technician B says a fuel cell produces electrical energy by breaking down hydrogen atoms into electrons and protons. Who is correct?

The primary advantage of an electric vehicle is a drastic reduction in ____ and emission levels.

____ braking means that the braking energy is turned back into electricity instead of heat.

Regenerative braking is a method of capturing the vehicles thermal energy in the batteries while it slows down.

Electric vehicles power the motor by:

In a hybrid system, the is a device that stores energy as electrostatic charge and is the primary device in the power supply during hill climbing, acceleration, and the recovery of braking energy.

In a PEM fuel cell, which side does the oxygen enter from?

In a full hybrid HEV, which component is responsible for recharging the 12-volt battery from the 300-volt direct current system?

In the ISG system the stator is attached to the engine block and coils that are formed by laser-welding copper bars.

The ultra capacitor is a device that stores energy as electrostatic charge.

The high-voltage service plug:

The protein exchange membrane is the most common fuel cell design.