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Introduction to Automotive Engineering > Tyre > Flashcards

Tyre Flashcards

1
Q

What is the primary function of a tyre’s bead bundle?
a) To provide traction
b) To absorb road shocks
c) To stay seated on the wheel rim
d) To reduce rolling resistance

A

c) To stay seated on the wheel rim

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2
Q

Which type of tyre construction has body cords that run at a 90-degree angle to the circumference of the tyre?
a) Bias ply
b) Belted bias ply
c) Radial ply
d) Cross ply

A

c) Radial ply

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3
Q

In a tyre designation P235/75R15, what does the number 75 represent?
a) Tyre width in millimeters
b) Rim diameter in inches
c) Height to width ratio as a percentage
d) Load index

A

c) Height to width ratio as a percentage

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4
Q

What is the primary purpose of a vehicle’s suspension system?
a) To increase fuel efficiency
b) To maximize friction between tyres and road surface
c) To reduce engine vibration
d) To improve aerodynamics

A

b) To maximize friction between tyres and road surface

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5
Q

Which of the following is NOT one of the three main principles of ride and handling?
a) Road isolation
b) Road holding
c) Cornering
d) Acceleration

A

d) Acceleration

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6
Q

What is the main function of a damper in a suspension system?
a) To support the vehicle’s weight
b) To absorb energy from road bumps
c) To maintain wheel alignment
d) To control spring oscillations

A

d) To control spring oscillations

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7
Q

In a twin-tube damper design, what is the purpose of the reserve tube?
a) To store excess hydraulic fluid
b) To house the piston rod
c) To provide additional damping force
d) To regulate oil temperature

A

a) To store excess hydraulic fluid

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8
Q

Which type of suspension allows the movement of one wheel to affect the other wheel on the same axle?
a) Independent suspension
b) Rigid axle suspension
c) MacPherson strut
d) Multi-link suspension

A

b) Rigid axle suspension

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9
Q

What is the main advantage of independent suspension over rigid axle suspension?
a) Lower cost
b) Simpler design
c) Better handling and ride comfort
d) Higher load-carrying capacity

A

c) Better handling and ride comfort

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10
Q

What component in a suspension system helps reduce body roll during cornering?
a) Shock absorber
b) Coil spring
c) Stabilizer bar
d) Control arm

A

c) Stabilizer bar

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11
Q

What is the primary function of the bead in a tyre’s structure?
a) To provide traction
b) To reinforce the tread
c) To keep the tyre seated on the wheel rim
d) To absorb road shocks

A

c) To keep the tyre seated on the wheel rim

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12
Q

Which component in a tyre’s structure provides lateral stability and protects the body plies?
a) The tread
b) The sidewall
c) The belts
d) The cap plies

A

b) The sidewall

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13
Q

What is the “contact patch” in relation to tyres?
a) The area where the tyre meets the road
b) The point where the tyre connects to the wheel
c) The section of tread that wears the fastest
d) The part of the tyre that contains the air pressure

A

a) The area where the tyre meets the road

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14
Q

What does the “aspect ratio” in a tyre designation (e.g., 75 in P235/75R15) represent?
a) The tyre’s width in millimeters
b) The tyre’s height as a percentage of its width
c) The tyre’s load capacity
d) The tyre’s speed rating

A

b) The tyre’s height as a percentage of its width

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15
Q

Which wheel alignment angle is represented by the tilt of the wheels inward or outward from vertical, as viewed from the front of the car?
a) Caster
b) Camber
c) Toe
d) Thrust angle

A

b) Camber

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16
Q

What is the purpose of tyre rotation?
a) To increase tyre pressure
b) To equalize tyre wear
c) To improve fuel efficiency
d) To enhance cornering ability

A

b) To equalize tyre wear

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17
Q

In a car suspension system, what does “sprung weight” refer to?
a) The weight of the suspension components
b) The weight supported by the road springs (e.g., vehicle body)
c) The weight of the wheels and axles
d) The total weight of the vehicle

A

b) The weight supported by the road springs (e.g., vehicle body)

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18
Q

Which suspension principle aims to minimize the transfer of vehicle weight from side to side and front to back?
a) Road isolation
b) Road holding
c) Cornering
d) Damping

A

b) Road holding

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19
Q

What is the main advantage of an independent suspension system over a rigid axle suspension?
a) Lower cost
b) Simpler design
c) Higher load capacity
d) Better handling and ride comfort

A

d) Better handling and ride comfort

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20
Q

In a MacPherson strut suspension, which component serves as both a structural member and a damping device?
a) Control arm
b) Stabilizer bar
c) Strut assembly
d) Ball joint

A

c) Strut assembly

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21
Q

What is the primary function of the sidewall in a tyre’s structure?
a) To provide traction
b) To reinforce the tread
c) To provide lateral stability and protect the body plies
d) To absorb road shocks

A

c) To provide lateral stability and protect the body plies

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22
Q

In tyre construction, what material is commonly used for the body plies?
a) Steel
b) Polyester cord
c) Natural rubber
d) Kevlar

A

b) Polyester cord

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23
Q

What does the term “contact patch” refer to in relation to tyres?
a) The area where the tyre meets the rim
b) The flat spot where the tyre meets the road
c) The tread pattern on the tyre surface
d) The sidewall of the tyre

A

b) The flat spot where the tyre meets the road

24
Q

Which type of tyre construction has body cords that run at alternating angles?
a) Radial ply
b) Bias ply
c) Belted bias ply
d) Run-flat

A

b) Bias ply

25
Q

What is the purpose of tyre rotation?
a) To increase tyre pressure
b) To equalize tyre wear
c) To improve fuel efficiency
d) To enhance cornering ability

A

b) To equalize tyre wear

26
Q

In a car suspension system, what does “sprung weight” refer to?
a) The weight of the suspension components
b) The weight supported by the road springs (e.g., vehicle body)
c) The weight of the wheels and axles
d) The total weight of the vehicle

A

b) The weight supported by the road springs (e.g., vehicle body)

27
Q

Which suspension principle aims to minimize the transfer of vehicle weight from side to side and front to back?
a) Road isolation
b) Road holding
c) Cornering
d) Damping

A

b) Road holding

28
Q

What is the main function of a damper in a suspension system?
a) To support the vehicle’s weight
b) To absorb energy from road bumps
c) To maintain wheel alignment
d) To control spring oscillations

A

d) To control spring oscillations

29
Q

In a MacPherson strut suspension, which component serves as both a structural member and a damping device?
a) Control arm
b) Stabilizer bar
c) Strut assembly
d) Ball joint

A

c) Strut assembly

30
Q

What is the main advantage of an independent suspension system over a rigid axle suspension?
a) Lower cost
b) Simpler design
c) Higher load capacity
d) Better handling and ride comfort

A

d) Better handling and ride comfort

31
Q

What are the three primary purposes of a vehicle’s suspension system?
a) Maximize friction, provide stability, ensure comfort
b) Reduce weight, increase speed, improve fuel efficiency
c) Enhance aesthetics, reduce noise, increase horsepower
d) Improve acceleration, braking, and cornering only

A

a) Maximize friction, provide stability, ensure comfort

32
Q

Which of the following is NOT one of the three important principles describing ride and handling?
a) Road isolation
b) Road holding
c) Cornering
d) Acceleration

A

d) Acceleration

33
Q

Which component is used to absorb shock forces while maintaining vehicle height?
a) Damper
b) Spring
c) Stabilizer bar
d) Control arm

A

b) Spring

34
Q

What is the main function of a damper in a suspension system?
a) To provide additional spring force
b) To control motion and reduce oscillations
c) To increase the vehicle’s ground clearance
d) To improve fuel efficiency

A

b) To control motion and reduce oscillations

35
Q

Which of the following is NOT a type of spring used in suspension systems?
a) Coil spring
b) Leaf spring
c) Torsion bar
d) Hydraulic spring

A

d) Hydraulic spring

36
Q

What are the two general types of suspension systems?
a) Front and rear suspension
b) Rigid axle and independent suspension
c) Coil spring and leaf spring suspension
d) MacPherson strut and double wishbone suspension

A

b) Rigid axle and independent suspension

37
Q

In a rigid axle suspension system:
a) Each wheel can move independently
b) Movement of one wheel affects the other wheel
c) Only the front wheels are connected
d) The system is only used in sports cars

A

b) Movement of one wheel affects the other wheel

38
Q

Which type of front suspension uses upper and lower control arms, ball joints, damper, and spring?
a) MacPherson strut
b) SLA (Short-Long Arm) suspension
c) Torsion bar suspension
d) Leaf spring suspension

A

b) SLA (Short-Long Arm) suspension

39
Q

The MacPherson strut suspension system incorporates:
a) Spring, damper, and upper suspension locator
b) Only a coil spring and lower control arm
c) Leaf springs and a rigid axle
d) Torsion bars and multiple links

A

a) Spring, damper, and upper suspension locator

40
Q

Which of the following is NOT a type of rear suspension mentioned in the lecture?
a) Leaf spring
b) Coil spring
c) Semi-independent
d) Solid axle with air suspension

A

d) Solid axle with air suspension

41
Q

The semi-trailing arm rear suspension is an example of:
a) Rigid axle suspension
b) Independent rear suspension
c) Front suspension
d) Leaf spring suspension

A

b) Independent rear suspension

42
Q

What is the primary function of a stabilizer bar in a suspension system?
a) To increase the vehicle’s top speed
b) To reduce body roll during cornering
c) To improve acceleration
d) To decrease brake fade

A

b) To reduce body roll during cornering

43
Q

What does “sprung weight” refer to in a vehicle?
a) The weight of the wheels and axles
b) The weight supported by the road springs, typically the vehicle body
c) The total weight of the suspension components
d) The weight of the passengers and cargo

A

b) The weight supported by the road springs, typically the vehicle body

44
Q

During the compression cycle of a damper:
a) The piston moves upward
b) The piston moves downward, compressing fluid below it
c) The spring coils tighten
d) The wheel loses contact with the road

A

b) The piston moves downward, compressing fluid below it

45
Q

Which suspension principle aims to keep the tires in contact with the ground for better steering, braking, and acceleration?
a) Road isolation
b) Road holding
c) Cornering
d) Damping

A

b) Road holding

46
Q

What is the primary function of a car’s suspension system?
a) To increase engine power
b) To maximize friction between tires and road surface
c) To reduce fuel consumption
d) To enhance the vehicle’s aesthetics

A

b) To maximize friction between tires and road surface

47
Q

Which of the following is NOT considered part of the “unsprung weight” of a vehicle?
a) Wheels
b) Axles
c) Vehicle body
d) Tires

A

c) Vehicle body

48
Q

In a twin-tube damper design, what is the purpose of the reserve tube?
a) To store excess hydraulic fluid
b) To house the piston rod
c) To increase damping force
d) To connect to the vehicle frame

A

a) To store excess hydraulic fluid

49
Q

During which cycle of a damper does it control the motion of the vehicle’s unsprung weight?
a) Extension cycle
b) Compression cycle
c) Rebound cycle
d) Neutral cycle

A

b) Compression cycle

50
Q

What is the main advantage of an independent suspension system over a rigid axle suspension?
a) It’s cheaper to manufacture
b) It provides better fuel efficiency
c) Motion from one wheel doesn’t directly affect the other wheel
d) It’s more suitable for off-road vehicles

A

c) Motion from one wheel doesn’t directly affect the other wheel

51
Q

Which component in a SLA (Short-Long Arm) suspension system connects the control arms to the wheel assembly?
a) Stabilizer bar
b) Torsion bar
c) Ball joint
d) Leaf spring

A

c) Ball joint

52
Q

What is the primary function of a stabilizer bar in a suspension system?
a) To provide additional spring force
b) To reduce body roll during cornering
c) To increase ground clearance
d) To improve acceleration

A

b) To reduce body roll during cornering

53
Q

In a MacPherson strut suspension, which component serves as both a structural member and a damping device?
a) Control arm
b) Coil spring
c) Ball joint
d) Strut assembly

A

d) Strut assembly

54
Q

What type of rear suspension uses a beam that allows some degree of wheel independence but not full independence?
a) Rigid axle
b) Multi-link
c) Semi-independent
d) Swinging half-axles

A

c) Semi-independent

55
Q

Which of the following is a characteristic of a leaf spring suspension?
a) It’s commonly used in modern sports cars
b) It provides the best ride comfort
c) It can act as both a spring and a locating device
d) It’s only used in front suspensions

A

c) It can act as both a spring and a locating device

Introduction to Automotive Engineering (5 decks)

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