Question 1

Torsion bars are made of heat-treated alloy steel with a hex head or splines at each end.

Accepted Answer

Torsion bars are indeed made of heat-treated alloy steel, which provides the necessary strength and resilience for their function in a vehicle's suspension system. The ends of torsion bars are typically designed with hex heads or splines to facilitate secure attachment points for mounting and adjustment purposes.

Question 2

Some vehicles made since the early 1980s have used composite springs made of reinforced fiberglass or graphite-reinforced plastic.

Accepted Answer

Composite springs, including those made from reinforced fiberglass or graphite-reinforced plastic, have been used in vehicle suspension systems since the early 1980s to reduce weight and improve performance.

Question 3

Some trucks have one or more ____________________ leaves that do not work until the other leaves have deflected enough under load to allow them to come into contact.

Accepted Answer

overload

Question 4

Springs support the load of the vehicle, absorbing the up-and-down motion of the wheels that would normally be transmitted directly to the frame and body.

Accepted Answer

Springs are a crucial component of a vehicle's suspension system, designed to absorb and dampen the impact from the road surface, preventing the full force of the up-and-down motion of the wheels from being transmitted directly to the frame and body of the vehicle. This helps in providing a smoother ride and protecting the vehicle structure.

Question 5

A(n) ____________________ spring is made of a long, flat strip of spring steel or composite fiber rolled at both ends to accept a pressed-fit rubber insulating bushing.

Accepted Answer

The answer of A(n) ____________________ spring is made of a...

Question 6

All of the following statements are true EXCEPT:

Accepted Answer

The answer of All of the following statements are true...

Question 7

The term MOST-Likely used to describe the event that occurs when hydraulic fluid becomes mixed with air is:

Accepted Answer

Aeration refers to the process where air is mixed with hydraulic fluid, leading to decreased efficiency and potential damage in hydraulic systems.

Question 8

____________________ is the weight that is supported by the car springs.

Accepted Answer

The answer of ____________________ is the weight that is supported...

Question 9

All of the following statements are true EXCEPT:

Accepted Answer

A MacPherson strut suspension typically does not have an upper control arm and upper ball joint; instead, it uses a single, large strut that integrates the shock absorber into the suspension design, simplifying the front suspension layout by replacing the upper control arm and ball joint.

Question 10

While having a discussion, Technician A says that shock absorbers are responsible for absorbing a good deal of road shock. Technician B says that the tires are a vehicle's primary shock absorbers. Who is correct?

Accepted Answer

Both technicians are correct. Technician A is correct in stating that shock absorbers are designed to absorb and dampen road shock, making the ride smoother for passengers. Technician B is also correct; tires act as the first point of contact with the road and absorb a significant amount of road shock before it reaches the suspension system.

Question 11

A rear subframe includes the engine, transaxle, and steering/suspension system.

Accepted Answer

A rear subframe typically supports components such as the rear suspension and, in some vehicles, the differential, but not the engine and transaxle, which are usually part of the front subframe in front-engine layouts.

Question 12

Rather than compressing, a(n) ____ is a straight rod that twists.

Accepted Answer

A torsion bar spring is designed to resist twisting motion, which is different from compression. When a force is applied, the bar twists along its axis to provide the spring action, making it distinct from components like ball joints, shock absorbers, and shackles that do not operate on this principle.

Question 13

A(n) ____________________ shock usually has the reserve chamber in the same column as the working piston.

Accepted Answer

The answer of A(n) ____________________ shock usually has the reserve...

Question 14

Normal suspension systems are MOST-Likely referred to as:

Accepted Answer

Normal suspension systems are most commonly referred to as passive systems because they operate without active control or adjustment in response to driving conditions.

Question 15

Independent suspension systems have more unsprung weight than rigid axle suspensions.

Accepted Answer

Independent suspension systems typically have less unsprung weight than rigid axle suspensions because each wheel is suspended independently, allowing for lighter components and less mass not supported by the springs.

Question 16

Which of the following statements is LEAST-Likely true?

Accepted Answer

Active suspension systems can operate without conventional shock absorbers or springs because they use a series of sensors, actuators, and a computer to control the suspension movement directly, offering an alternative to traditional passive suspension components.

Question 17

Which of the following is LEAST-Likely a component of the suspension system?

Accepted Answer

Bearings are typically associated with the wheel assembly or engine components rather than the suspension system, which primarily includes springs, shock absorbers, and control arms to absorb and manage road shocks.

Question 18

While having a discussion, Technician A says that SLA suspensions maintain precise wheel position under all driving conditions. Technician B says that they can have a large amount of vertical travel without scrub. Who is correct?

Accepted Answer

SLA (Short/Long Arm) suspensions are designed to maintain precise wheel alignment and position under various driving conditions, and they allow for significant vertical wheel travel with minimal lateral movement (scrub), making both Technician A and B correct.

Question 19

The ____ is the most common spring type used in passenger cars.

Accepted Answer

Coil springs are the most common type of spring used in the suspension systems of passenger cars due to their efficiency in absorbing shocks and their compact design.

Question 20

A(n) ____________________ allows motion in two directions, moving with the same up-and-down motion as the bushings on the other end of the control arm.

Accepted Answer

The answer of A(n) ____________________ allows motion in two directions,...

Quiz 63: Suspension Fundamentals

Torsion bars are made of heat-treated alloy steel with a hex head or splines at each end.

Some vehicles made since the early 1980s have used composite springs made of reinforced fiberglass or graphite-reinforced plastic.

Some trucks have one or more ____________________ leaves that do not work until the other leaves have deflected enough under load to allow them to come into contact.

Springs support the load of the vehicle, absorbing the up-and-down motion of the wheels that would normally be transmitted directly to the frame and body.

A(n) ____________________ spring is made of a long, flat strip of spring steel or composite fiber rolled at both ends to accept a pressed-fit rubber insulating bushing.

All of the following statements are true EXCEPT:

The term MOST-Likely used to describe the event that occurs when hydraulic fluid becomes mixed with air is:

____________________ is the weight that is supported by the car springs.

All of the following statements are true EXCEPT:

While having a discussion, Technician A says that shock absorbers are responsible for absorbing a good deal of road shock. Technician B says that the tires are a vehicle's primary shock absorbers. Who is correct?

A rear subframe includes the engine, transaxle, and steering/suspension system.

Rather than compressing, a(n) ____ is a straight rod that twists.

A(n) ____________________ shock usually has the reserve chamber in the same column as the working piston.

Normal suspension systems are MOST-Likely referred to as:

Independent suspension systems have more unsprung weight than rigid axle suspensions.

Which of the following statements is LEAST-Likely true?

Which of the following is LEAST-Likely a component of the suspension system?

While having a discussion, Technician A says that SLA suspensions maintain precise wheel position under all driving conditions. Technician B says that they can have a large amount of vertical travel without scrub. Who is correct?

The ____ is the most common spring type used in passenger cars.

A(n) ____________________ allows motion in two directions, moving with the same up-and-down motion as the bushings on the other end of the control arm.