Question 1

Two technicians are discussing vehicle accessory systems. Technician A says that the navigation system is considered a vehicle accessory. Technician B says that many accessory systems require technical expertise for proper diagnosis. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

Both technicians are correct. Navigation system is considered a vehicle accessory and many accessory systems require technical expertise for proper diagnosis.

Question 2

The only purpose of the electrical system is to start and operate the engine.

Accepted Answer

The electrical system also powers various components of the vehicle such as lights, radio, air conditioning, and power windows, among others.

Question 3

Biodiesel uses modified vegetable oils.

Accepted Answer

Biodiesel is made by modifying vegetable oils, such as soybean or rapeseed oil, through a chemical process called transesterification. This process converts the oils into a fuel that can be used in diesel engines.

Question 4

Unibody frames are rigid parallel channels that run the entire length of the vehicle.

Accepted Answer

Unibody frames are not rigid parallel channels but rather a single structure that combines the body and frame into one unit.

Question 5

Thermodynamics is the study of heat and cooling of air conditioning systems.

Accepted Answer

Thermodynamics is the study of the relationships between heat, work, and energy. While air conditioning systems use principles of thermodynamics in their operation, the study of thermodynamics is not specifically focused on air conditioning systems.

Question 6

Two technicians are discussing automotive electrical systems. Technician A states that vehicle electrical systems operate on DC voltage. Technician B states that vehicle electrical systems operate on AC voltage. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

Vehicle electrical systems operate on DC voltage. Although there are some components in the vehicle, such as alternators and ignition coils, that use AC voltage, the overall system operates on DC voltage.

Question 7

Which fuel is manufactured by removing it from other natural elements, and, when ignited, it burns clean with very few harmful emissions?
A) Ethanol
B) Diesel
C) Hydrogen
D) Oxygen

Accepted Answer

Hydrogen is the fuel that is manufactured by removing it from other natural elements, and when ignited, it burns clean with very few harmful emissions. It is considered one of the cleanest fuels available as its only emission is water vapor.

Question 8

Hybrid power vehicles run solely on electricity.

Accepted Answer

Hybrid power vehicles use a combination of electricity and fuel to operate, therefore they do not run solely on electricity.

Question 9

Which statement about vehicle brake systems is false ?
A) Once the mechanical force is converted to hydraulic, it doesn't change back.
B) Antilock systems serve to prevent brake lockup on panic stops.
C) Brake force is applied mechanically at the wheels.
D) The brake system includes linkages and hydraulic circuits.

Accepted Answer

The statement that once the mechanical force is converted to hydraulic, it doesn't change back is false. In a vehicle's brake system, the mechanical force applied by the driver's foot is converted into hydraulic pressure in the master cylinder, which is then used to apply mechanical force at the brake calipers or drums to stop the vehicle. This process involves a conversion from mechanical to hydraulic pressure and back to mechanical force at the wheels.

Question 10

Which statement concerning fuel cell technology is correct?
A) Hydrogen produces hydrochloric acid when burned.
B) The only byproduct of a fuel cell vehicle is water.
C) Fuel cell technology is ready to be deployed in a large scale.
D) Fuel cell technology is based on running hydrogen through a catalyst where an electron is added.

Accepted Answer

Fuel cells produce electricity through the chemical reaction of hydrogen and oxygen, and the only byproduct of this process is water. Choices A and C are incorrect, as hydrogen does not produce hydrochloric acid when burned and fuel cell technology is still in the early stages of development and not yet ready for large-scale deployment. Choice D is partially correct, as fuel cell technology does involve a catalyst and the addition of an electron, but it is not limited to just hydrogen as a fuel source.

Question 11

Vehicle accessory systems include computers that can store memory of seat position, pedal position, and even steering wheel position.

Accepted Answer

Vehicle accessory systems such as driver memory systems can store memory of seat position, pedal position, and even steering wheel position.

Question 12

Two technicians are talking about vehicle frames. Technician A says that unibody frames utilize the body for some of the support. Technician B says that full-frame vehicles are lighter than comparable size unibody vehicles. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

Unibody frames do utilize the body for some of the support, whereas full-frame vehicles are generally heavier than comparable size unibody vehicles. Therefore, Technician A is correct and Technician B is incorrect.

Question 13

A vacuum is any pressure less than atmospheric pressure.

Accepted Answer

This is the definition of a vacuum, so it is true.

Question 14

Which statement reflects an original goal in developing electric-powered vehicles?
A) Electric vehicles should have a range of over 600 miles.
B) The majority of components, while nonrecyclable, should be environmentally friendly.
C) The power pack should be capable of quick recharge from 80 percent discharge.
D) The battery pack life should be approximately 450,000 miles.

Accepted Answer

The statement that reflects an original goal in developing electric-powered vehicles is that "The power pack should be capable of quick recharge from 80 percent discharge." This is because electric vehicles needed to have the ability to charge quickly in order to make them more efficient and appealing to potential buyers. The other statements mention desirable features, but not the original goals.

Question 15

The suspension system supports the vehicle and helps to provide a smoother ride.

Accepted Answer

The suspension system is designed to absorb and dampen the shocks and vibrations that come from driving on uneven surfaces. This helps to improve ride comfort and stability while also protecting the vehicle's components from damage.

Question 16

Any vehicle component mounted above the springs is supported by the springs and is referred to as sprung (or supported) weight.

Accepted Answer

This statement is true.

Question 17

Two technicians are discussing hybrid-powered vehicles. Technician A says that hybrid vehicles use the internal combustion motor to drive the generator that recharges the battery pack. Technician B says that the electric motors can be run through a power splitter or attached directly to the drive wheels. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

Both technicians are correct. Hybrid vehicles do use the internal combustion motor to drive the generator that recharges the battery pack, as explained by Technician A. Technician B is correct in stating that electric motors can be run through a power splitter or attached directly to the drive wheels in hybrid vehicles.

Question 18

Two technicians are discussing alternative fuels. Technician A says that biodiesel is produced from vegetable oil that is used as cooking oil. Technician B says that biodiesel is produced from refined natural gas. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician A is correct. Biodiesel is produced from vegetable oil that is used as cooking oil or other plant oils. It is not produced from refined natural gas.

Question 19

The powertrain control module (PCM) is the largest single computer in a vehicle.

Accepted Answer

The powertrain control module (PCM) is responsible for controlling various functions of the engine and transmission. It is one of the largest electronic control units (ECUs) in a vehicle and is often referred to as the "brain" of the engine management system.

Question 20

Two technicians are discussing steering systems. Technician A says that the major components of a steering system are: steering wheel, linkage, and the dash support assembly. Technician B says that the major components include the steering wheel, linkage, steering knuckle, and gearing. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician B is correct. The major components of a steering system include the steering wheel, linkage, steering knuckle, and gearing. The dash support assembly is not a major component of a steering system.

Quiz 2: Introduction to the Automobile

Two technicians are discussing vehicle accessory systems. Technician A says that the navigation system is considered a vehicle accessory. Technician B says that many accessory systems require technical expertise for proper diagnosis. Who is correct?

The only purpose of the electrical system is to start and operate the engine.

Biodiesel uses modified vegetable oils.

Unibody frames are rigid parallel channels that run the entire length of the vehicle.

Thermodynamics is the study of heat and cooling of air conditioning systems.

Two technicians are discussing automotive electrical systems. Technician A states that vehicle electrical systems operate on DC voltage. Technician B states that vehicle electrical systems operate on AC voltage. Who is correct?

Which fuel is manufactured by removing it from other natural elements, and, when ignited, it burns clean with very few harmful emissions?

Hybrid power vehicles run solely on electricity.

Which statement about vehicle brake systems is false ?

Which statement concerning fuel cell technology is correct?

Vehicle accessory systems include computers that can store memory of seat position, pedal position, and even steering wheel position.

Two technicians are talking about vehicle frames. Technician A says that unibody frames utilize the body for some of the support. Technician B says that full-frame vehicles are lighter than comparable size unibody vehicles. Who is correct?

A vacuum is any pressure less than atmospheric pressure.

Which statement reflects an original goal in developing electric-powered vehicles?

The suspension system supports the vehicle and helps to provide a smoother ride.

Any vehicle component mounted above the springs is supported by the springs and is referred to as sprung (or supported) weight.

Two technicians are discussing alternative fuels. Technician A says that biodiesel is produced from vegetable oil that is used as cooking oil. Technician B says that biodiesel is produced from refined natural gas. Who is correct?

The powertrain control module (PCM) is the largest single computer in a vehicle.