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Composite Materials Quiz T

Total questions: 100

Worksheet time: 50mins

Name
Class
Date
1.

There are three factors that a materials engineer has control over, these are component design, material usage, life cycle.

a)

True

b)

False

2.

Life cycle analysis in design consists of evaluating the potential environmental impacts associated with the inputs and outputs of the product system.

a)

True

b)

False

3.

The material life cycle does not require numerous interactions and exchanges among materials, energy, and the environment.

a)

True

b)

False

4.

Recycling metals like steel and aluminum is far more energy-efficient and cost-efficient than producing them from raw materials.

a)

True

b)

False

5.

Metals can be recycled only up to ten times.

a)

True

b)

False

6.

Composites are mostly recycled, and are just disposed through landfills.

a)

True

b)

False

7.

Recycling Ceramics/Glassware is time consuming and expensive.

a)

True

b)

False

8.

Plastic constitutes 3 percent of the solid waste produced in Metro Manila.

a)

True

b)

False

9.

Manufacturing of a product does NOT have an impact on the environment in many ways.

a)

True

b)

False

10.

Resources required to produce a product come from different parts of the world.

a)

True

b)

False

11.

Polymers are composed of large repeating units called monomers.

a)

True

b)

False

12.

Natural polymers are exclusively man-made materials

a)

True

b)

False

13.

Synthetic polymers are derived from natural sources like cellulose.

a)

True

b)

False

14.

Homopolymers are composed of a single type of monomer.

a)

True

b)

False

15.

Inorganic polymers have chains primarily composed of carbon atoms.

a)

True

b)

False

16.

Branched polymers contain linear branches off the main chain

a)

True

b)

False

17.

Elastomers exhibit elastic deformation when stressed.

a)

True

b)

False

18.

Addition polymerization involves monomers with functional groups like hydroxyl or amine.

a)

True

b)

False

19.

Polyvinyl Chloride (PVC) is widely used in plumbing systems.

a)

True

b)

False

20.

Polyvinyl Chloride (PVC) is widely used in plumbing systems.

a)

True

b)

False

21.

Most ceramics can be a dielectric material such as resistors, capacitors, and insulators.

a)

True

b)

False

22.

Ceramics are most commonly composed of silicates, oxides, nitrides, and carbides.

a)

True

b)

False

23.

Ceramics are resistant to high temperatures but weak in harsh environments.

a)

True

b)

False

24.

Diamonds and c-BN are examples of super abrasive.

a)

True

b)

False

25.

Ceramics are not resistant against compression due to their strong ionic and covalent bonding.

a)

True

b)

False

26.

Ceramics are less resistant to high temperatures and harsh environments than metals and polymers.

a)

True

b)

False

27.

Ceramic is known to be dense in material, which makes its porosity high.

a)

True

b)

False

28.

Ceramic has a refractive property which makes the light that hits the material bend, making it appear shiny.

a)

True

b)

False

29.

There are three types of ceramic fabrication: Glass Forming, Particulate Forming, and Cementation.

a)

True

b)

False

30.

Ceramics are capable of bending light due to defects and grain boundaries.

a)

True

b)

False

31.

Composite materials are formed by dissolving two materials into one another.

a)

True

b)

False

32.

Mud bricks reinforced with straw are an example of a composite material.

a)

True

b)

False

33.

The matrix in a composite material provides tensile strength.

a)

True

b)

False

34.

Fiber-reinforced composites depend heavily on fiber orientation for their properties.

a)

True

b)

False

35.

Portland cement is an example of a composite matrix.

a)

True

b)

False

36.

Carbon fibers are the most commonly used reinforcements in basic polymer-matrix composites.

a)

True

b)

False

37.

Laminar composites are formed by stacking layers with a preferred high-strength direction.

a)

True

b)

False

38.

The primary function of the matrix in a composite is to enhance toughness.

a)

True

b)

False

39.

Whiskers are among the strongest known materials due to their flaw-free structure.

a)

True

b)

False

40.

Sandwich panels are lightweight yet have high stiffness and strength.

a)

True

b)

False

41.

The primary goal of materials selection is to choose materials based on their aesthetic appeal.

a)

True

b)

False

42.

Product analysis includes evaluating how well a product meets user needs.

a)

True

b)

False

43.

Aluminum bicycle frames are more affordable than steel frames.

a)

True

b)

False

44.

Corrosion resistance is an important physical property for materials used outdoors.

a)

True

b)

False

45.

Steel is lighter than aluminum, making it ideal for racing bikes.

a)

True

b)

False

46.

Commuter bikes are designed primarily for competitive cycling.

a)

True

b)

False

47.

In system analysis, a bicycle's frame, forks, wheels, and saddle are considered core components.

a)

True

b)

False

48.

Composite materials like CFRP are cost-effective for budget-conscious consumers.

a)

True

b)

False

49.

Bright colors on bicycles are chosen for both safety and style.

a)

True

b)

False

50.

Aluminum is a practical material for mass production due to its adaptability to automated processes.

a)

True

b)

False

51.

What is the primary role of the matrix in a composite material?

a)

To provide high tensile strength

b)

To bind and protect the reinforcement fibers

c)

To enhance brittleness

d)

To dissolve the reinforcement

52.

Which ancient civilization first engineered man-made composites like plywood?

a)

Egyptians

b)

Mesopotamians

c)

Greeks

d)

Romans

53.

What type of composite is concrete classified as?

a)

Fiber-reinforced

b)

Large-particle composite

c)

Polymer-matrix composite

d)

Dispersion-strengthened composite

54.

Which material is commonly used as reinforcement in fiberglass?

a)

Carbon

b)

Glass threads

c)

Aramid fibers

d)

Aluminum oxide

55.

What type of stress is introduced in prestressed concrete?

a)

Tensile stress

b)

Compressive stress

c)

Shear stress

d)

Torsional stress

56.

Which composite is known for having high strength-to-weight ratios?

a)

Carbon fiber-reinforced composites

b)

Aramid fiber-reinforced composites

c)

Glass fiber-reinforced composites

d)

Laminar composites

57.

What are cermets primarily used for?

a)

Construction materials

b)

Cutting tools

c)

Textile reinforcement

d)

Electrical insulation

58.

What influences the strength of fiber-reinforced composites the most?

a)

Matrix composition

b)

Fiber orientation and concentration

c)

Particle size

d)

Temperature resistance

59.

Which fiber material is known for its exceptionally high tensile strength?

a)

Boron

b)

Whiskers

c)

Silicon carbide

d)

Glass

60.

Sandwich panels are a type of:

a)

Laminar composite

b)

Structural composite

c)

Dispersion-strengthened composite

d)

Polymer-matrix composite

61.

What is one key environmental concern when selecting materials in engineering?

a)

Ensuring the material is lightweight

b)

Ensuring the material is cost-effective for the company

c)

Minimizing resource consumption and pollution during production

d)

Ensuring materials are aesthetically pleasing

62.

Which material is often used as a lightweight, high-strength alternative to metals like stainless steel?

a)

Polycarbonate

b)

Fiber-Reinforced Plastics (FRP)

c)

Glass

d)

Aluminum Alloys

63.

Which of the following materials is not easily recyclable?

a)

Aluminum

b)

Glass

c)

Ceramics

d)

Steel

64.

Why is it important for engineers to consider social factors when selecting materials?

a)

To ensure that materials have a wide variety of colors and textures

b)

To ensure that materials are easy to recycle and safe for disposal

c)

To ensure that materials are the least expensive option available

d)

To ensure that materials are attractive to consumers

65.

Which of the following manufacturing processes is considered a primary process?

a)

Heat treatment

b)

Welding

c)

Casting

d)

Drilling

66.

Which material is commonly used as a lightweight, high-impact-resistant alternative to glass in applications like safety glasses and riot shields?

a)

Aluminum

b)

Polycarbonate

c)

Fiber-Reinforced Plastics

d)

Stainless Steel

67.

Which of the following materials is easier to recycle than thermoset plastics?

a)

Glass

b)

Thermoplastic polymers

c)

Ceramics

d)

Fiber-Reinforced Plastics

68.

Which of the following is an example of a secondary manufacturing process?

a)

Molding

b)

Plastic forming

c)

Heat treatment

d)

Powder compaction

69.

In the context of material science, what does the term "secondary process" refer to?

a)

Processes used to shape raw materials into their final form, such as casting

b)

Processes used to enhance or finish parts after the basic shape is created, such as welding or painting

c)

Processes used to extract raw materials from the earth

d)

Processes that design new types of materials

70.

Which of the following materials is most commonly recycled because of its widespread use and high value?

a)

Glass

b)

Aluminum

c)

Ceramics

d)

Composites

71.

What is the primary purpose of materials selection in engineering?

a)

To choose the cheapest materials

b)

To select materials based on personal preference

c)

To choose the most appropriate materials for a specific application

d)

To ensure compliance with only aesthetic standards

72.

What is the main function of a bicycle?

a)

To provide entertainment

b)

To serve as a mode of human-powered transportation

c)

To generate electricity

d)

To act as a decorative item

73.

Which material has the best strength-to-weight ratio among those used for bicycle frames?

a)

Steel

b)

Aluminum

c)

Composite (CFRP)

d)

Plastic

74.

What property of aluminum makes it suitable for outdoor use in bicycle frames?

a)

High density

b)

Corrosion resistance

c)

Low strength

d)

High cost

75.

Which of the following environments is not mentioned for product testing?

a)

Laboratories

b)

Field testing

c)

Space testing

d)

User environment

76.

What feature makes commuter bikes suitable for urban settings?

a)

Racing tires

b)

Ergonomic seats and handlebars

c)

Streamlined frame design

d)

Mounting points for racks and panniers

77.

Why is aluminum a preferred material for commuter bicycle frames?

a)

It is heavier than steel

b)

It offers a balance of cost, durability, and performance

c)

It requires no maintenance

d)

It is more aesthetic than composite materials

78.

What type of analysis involves evaluating a product's functionality, performance, and cost?

a)

Field Testing

b)

System Analysis

c)

Product Analysis

d)

Comparative Analysis

79.

What is a disadvantage of steel for bicycle frames?

a)

High strength

b)

Corrosion resistance

c)

Heaviness

d)

Durability

80.

Which manufacturing process is used for composite materials like CFRP?

a)

Welding

b)

Automated assembly

c)

Molding

d)

Forging

81.

What is a polymer?

a)

A large molecule made of repeating units called monomers

b)

A molecule with a single repeating unit

c)

A metal compound

d)

None of the above

82.

What kind of bonding is present in a polymer?

a)

Covalent Bonding

b)

Ionic Bonding

c)

Both Covalent and Ionic Bonding

d)

None of the above

83.

Which of the following is a synthetic polymer?

a)

Rubber

b)

Cellulose

c)

Polystyrene

d)

Silk

84.

Which of the following is a classification of polymers based on their source?

a)

Natural, Synthetic, Semi-synthetic

b)

Linear, Branched, Cross-linked

c)

Addition, Condensation

d)

None of the above

85.

What type of polymer has a carbon-carbon backbone?

a)

Organic polymers

b)

Inorganic polymers

c)

Condensation polymers

d)

Natural polymers

86.

What are copolymers?

a)

Polymers made from a single type of monomer

b)

Polymers made from two or more different types of monomers

c)

Polymers with a branched structure

d)

Polymers that are biodegradable

87.

What type of polymer structure has long, straight chains with no branches?

a)

Linear polymers

b)

Branched polymers

c)

Cross-linked polymers

d)

Network polymers

88.

Which polymer is commonly used for making pipes for tubing?

a)

Polyvinyl chloride (PVC)

b)

Polyethylene terephthalate (PET)

c)

Polystyrene

d)

Nylon

89.

Which property of polymers makes them suitable for use as insulators?

a)

High conductivity

b)

Low thermal and electrical conductivity

c)

High melting point

d)

Hardness

90.

Why do some polymers have excellent chemical resistance?

a)

They are highly reactive and contain non-stable bonds.

b)

They have non-reactive and stable bonds in their backbone.

c)

They have low molecular weight.

d)

None of the above

91.

The following are the properties of ceramic materials EXCEPT:

a)

Mechanical

b)

Tactile

c)

Optical

d)

Electrical

92.

It is easy to manufacture and shape when mixed with the right amount of water and clay.

a)

Abrasives

b)

Refraction

c)

Clay products

d)

Cement

93.

This process of fabrication is usually used in clay and non-clay composition wherein it is grind and heated up to 1700°C for 6 minutes.

a)

Sintering

b)

Slip Casting

c)

Blowing

d)

Hydroplastic Forming

94.

The following are thermal properties of ceramic materials EXCEPT:

a)

Heat Capacity

b)

Thermal conductivity

c)

Corrosion resistance

d)

Thermal shock resistance

95.

Which of the following statements is true?

a)

A large number of ceramic materials are not sensitive to thermal shock

b)

Some ceramic materials → very high resistance to thermal shock is despite of low ductility (e.g. fused silica, Aluminum titanate)

c)

Result of rapid heating → tensile stress (thermal stress) → cracks and consequent failure

d)

Ceramic materials, in contrast, are used for thermal insulation due to the high thermal conductivity

96.

The conductivity in ceramics depends on which main factors?

a)

Frequency of the Applied Field and Temperature Effect

b)

Thermal conductivity and heat resistance

c)

Temperature effect and thermal conductivity

d)

Optical properties and corrosion resistance

97.

Ceramics are capable of refraction because of:

a)

Their thermal conductivity

b)

Their density and porosity

c)

Their visual colorless nature

d)

Their arbitrations in texture

98.

Ceramics are refractive materials EXCEPT:

a)

Silica

b)

Fireclay

c)

Magnesia

d)

Chromite

99.

What is the primary function of ceramics in capacitors and insulators?

a)

To conduct electricity efficiently

b)

To support an electrostatic field

c)

To reflect light

d)

To absorb moisture

100.

Which factor is crucial in determining the thermal shock resistance of ceramic materials?

a)

The material's porosity

b)

The geometric boundary conditions

c)

The material's electrical conductivity

d)

The strength of its optical properties