Quiz on Material Science and Aircraft Design

Hook's Law relates to:

• Force and area

• Stress and strain

• Load and deflection

• Tension and compression

What is the formula for Hook's Law?

• σ = Eε

• F = ma

• P = IV

• E = mc²

Youth's Modulus (E) measures:

• Strength of a material

• Stiffness of a material

• Ductility of a material

• Toughness of a material

Yield strength (Sy) is:

• The maximum stress a material can withstand

• The point of transition between elastic and plastic deformation

• The stress at which a material fractures

• The stress required to elastically deform a material

Which component is NOT found in fixed-wing aircraft structures?

• Wing

• Fuselage

• Tail rotor

• Stabilizer

An example of a multi-engine aircraft is:

• Cessna 172

• Piper Cub

• C-130

• Pilatus PC-7

What happens if one engine fails during flight in a multi-engine aircraft?

• It climbs higher

• It yaws toward the side of the failed engine

• It loses altitude immediately

• It becomes uncontrollable

What is the purpose of standardized test specimens in material testing?

• To reduce costs

• To measure the actual properties

• To speed up the testing process

• To increase variability

Which of the following is a structural failure mode?

• Fatigue

• Corrosion

• Buckling

• All of the above

Which of the following materials is commonly used in aircraft structures?

• Composites

• Metals

• Alloys

• All of the above