Answer: Longitudinal (tensile or compressive).
- A Shearing mainly, which is instead governed by the shear modulus
- B Volumetric mainly, which is instead governed by the bulk modulus
- C Longitudinal (tensile or compressive)
- D Torsional mainly, which is governed by the shear modulus of the shaft
Correct answer: C. Longitudinal (tensile or compressive)
Explanation: Youngs modulus Y = longitudinal stress / longitudinal strain, applicable to stretching or compression along a length.
A typical stress-strain curve: the initial straight line (Hooke's Law region, slope = Young's modulus) ends at the elastic limit; beyond the yield point, deformation becomes permanent, peaking at the ultimate tensile strength before the wire finally fractures.
Concept context
Stress, strain, Hookes law, and the elastic moduli that describe how solids deform and recover under load.