CAE Project Engineer Interview Questions and Answers

Stress is the force per unit area. Engineering stress-strain curve is based on original dimensions while true stress-strain curve is based on instantaneous dimensions. Moment is the force that causes rotation while torque is the measure of the force's ability to cause rotation.

• Stress is the force per unit area that a material experiences when subjected to an external force.

• Engineering stress-strain curve is based on the original dimensions of the material while true stress-st...read more

Aluminium bar has higher deformation in axial and bending, while steel bar has higher deformation in torsion.

• Aluminium has lower Young's modulus than steel, making it more deformable in axial and bending loads.

• Steel has higher shear modulus than aluminium, making it more resistant to torsion.

• The difference in deformation between the two materials can be quantified using finite element analysis.

• For example, a prismatic aluminium bar may deform 2mm under a 1000N axial load, whi...read more

Transmissibility is the ratio of the amplitude of vibration of a system with a force applied to it to the amplitude of the force applied.

• It is a measure of how much a system amplifies or attenuates vibrations.

• It is expressed as a ratio or a percentage.

• Transmissibility depends on the frequency of the force and the natural frequency of the system.

• A system with a low natural frequency will have a high transmissibility at low frequencies.

• A system with a high natural frequency wil...read more

Natural frequency is the frequency at which a system oscillates when disturbed from its equilibrium position.

• It is the frequency at which a system vibrates without any external force applied.

• It is determined by the stiffness and mass of the system.

• It is an important factor in designing structures to avoid resonance.

• Examples include the natural frequency of a guitar string or a suspension bridge.