EMAT 7.2-7.5 quiz

What is a significant consequence of material deterioration in structures?

• Enhanced aesthetic appeal

• Improved energy efficiency

• Increased risk of structural failure

• Reduced weight

Which type of deterioration often leads to issues in concrete structures?

• Abrasion

• Thermal expansion

• Corrosion

• Fracture

Material degradation in critical machinery can lead to:

• Improved performance

• Unexpected equipment failures

• Increased safety

• Enhanced reliability

One economic consequence of material deterioration is:

• Decreased operational costs

• Higher maintenance and repair expenses

• Improved material quality

• Longer service life

Which environmental factor is a common contributor to material degradation?

• Moisture

• Bright sunlight

• Low temperatures

• Low humidity

What can moisture exposure cause in metals?

• Increased tensile strength

• Improved conductivity

• Rust formation

• Enhanced elasticity

Exposure to strong acids typically leads to:

• Improved material durability

• Increased flexibility

• Significant corrosion

• Thermal resistance

High temperatures in materials can lead to:

• Accelerated chemical reactions

• Increased tensile strength

• Enhanced ductility

• Reduced weight

What does fatigue in materials refer to?

• Sudden breakage under high stress

• Visual changes in the material

• Failure due to repeated stress cycles

• Permanent bending without breaking

Galvanic corrosion occurs primarily when:

• Metals are coated

• Dissimilar metals come into contact in a corrosive environment

• Metals are exposed to high heat

• Metals are mixed with plastics