Deck 112: Suspension System Principles and Components

Question 1

The spring rate of a spring is measured in units of ________.

A)ft. -lb.
B)in. -lb.
C)lb. per inch
D)psi

Answer 1

lb. per inch

Question 2

Two technicians are discussing torsion bars. Technician A says that many torsion bars are adjustable to allow for ride height adjustment. Technician B says that torsion bars are usually marked left and right and should not be switched side to side. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Answer 2

Both technicians A and B

Question 3

What component(s) is(are) considered to be unsprung weight?

A)Frame
B)Body
C)Wheels and tires
D)Both A and B

Answer 3

Wheels and tires

Question 4

Two technicians are discussing MacPherson struts. Technician A says that in most applications the entire strut assembly rotates when the front wheels are turned. Technician B says that a typical MacPherson strut suspension system uses only one control arm and one ball joint per side. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 5

Technician A says that regular replacement shock absorbers will raise the rear of a vehicle that is sagging down. Technician B says that replacement springs will be required to restore the proper ride height. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 6

What suspension component is used to counteract body lean during cornering?

A)Torsion bar
B)Stabilizer bar
C)Control arm
D)Strut rod

Question 7

A center bolt is used in what type of spring?

A)Coil
B)Torsion bar
C)Leaf
D)All of the above

Question 8

Two technicians are discussing air shocks. Technician A says that air is forced through small holes to dampen the ride. Technician B says that air shocks are conventional hydraulic shock absorbers with an airbag to control vehicle ride height. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 9

The owner of a pickup wants to cut the coil springs to lower the vehicle. Technician A says that the ride will be harsher than normal if the springs are cut. Technician B says that the springs could be damaged, especially if a cutting torch is used to cut the springs. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 10

A MacPherson strut is a structural part of the vehicle.

Question 11

Most trucks and larger RWD vehicles use which type of frame?

A)Stub frame
B)Unit body
C)Full frame
D)None of these are correct

Question 12

Which component is used on FWD vehicles to support the engine and transmission?

A)Body mount
B)Cradle
C)Ladder frame
D)Perimeter frame

Question 13

What frame design combines the body with the structure of the frame?

A)Full frame
B)Ladder frame
C)Perimeter frame
D)Unit body

Question 14

What provides the strength of the structure for unit body vehicles?

A)Full frame
B)Space frame
C)Cross members
D)Shape of the assembly

Question 15

What term describes the weight of the vehicle with all fluids filled but no passengers or cargo?

A)Rated weight
B)GVW
C)Curb weight
D)Model weight

Question 16

What term describes the basic shape and size of a vehicle?

A)Platform
B)Profile
C)Wheelbase
D)Track

Question 17

Technician A says that vehicles with less unsprung weight have better handling. Technician B says that the wheel and tire assembly are considered sprung weight. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 18

Technician A says that most modern vehicles have independent front suspensions. Technician B says that no vehicle has an independent rear suspension. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 19

Which component transfers vehicle weight to the wheels?

A)Springs
B)Axles
C)Struts
D)Shocks

Question 20

Which of the following is NOT a type of automotive spring?

A)Leaf
B)Torsion bar
C)Coil
D)All of these are automotive springs

Question 21

Technician A says that compression of a vehicle spring is called jounce. Technician B says that extending the vehicle spring is called rebound. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 22

Which law states that the deflection of a spring is directly proportional to the applied force?

A)Pascal's law
B)Halderman's law
C)Hooke's law
D)Newton's law

Question 23

Technician A says that all automotive coil springs have the same number of coils. Technician B says that coil spring spacers can cause damage to the spring. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 24

Technician A says that a constant rate spring has the same deflection rate throughout its entire range of compression. Technician B says that some coil springs have different diameters at the top and bottom of the spring. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 25

Technician A says that each coil spring is specifically engineered to be installed on one particular side of the vehicle. Technician B says that rubber spring pockets prevent excessive noise. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 26

Technician A says that cutting coil springs is an acceptable method of properly lowering a vehicle. Technician B says that all leaf springs are made of steel. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 27

Technician A says that torsion bars can be re-installed on either side of the vehicle. Technician B says that torsion bars are often used on 4x4 trucks. Who is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 28

Which component supports the wheel and attaches to the control arms?

A)Sway bar
B)Ball joint
C)Shock absorber
D)Steering knuckle

Question 29

Which of the following is NOT true?

A)MacPherson strut suspension systems do not use loaded ball joints
B)MacPherson struts attach to the steering knuckle
C)Struts support the weight of the vehicle
D)Struts control spring oscillation

Question 30

In this illustration, which ball joint is the load carrying ball joint?

A)A
B)B
C)C
D)None of these

Question 31

In this illustration, identify the stabilizer bar.

A)A
B)B
C)C
D)D