Tecosim Engineering Services Interview Questions and Answers

Types of fits include clearance fit, interference fit, and transition fit, each offering different advantages.

• Clearance fit: allows for easy assembly and disassembly, used in applications where relative motion is required (e.g. sliding fits)

• Interference fit: provides a tight connection with no relative movement, used in applications where rigidity is important (e.g. press fits)

• Transition fit: offers a compromise b...read more

GD&T is a system for defining and communicating engineering tolerances.

• GD&T stands for Geometric Dimensioning and Tolerancing

• It is used to define the allowable variations in form, size, and orientation of part features

• GD&T symbols are used on engineering drawings to specify the desired tolerances

• Proper implementation of GD&T can improve the quality and manufacturability of a design

Spring back effect is the tendency of a material to return to its original shape after being deformed.

• Spring back effect occurs in materials like metals, plastics, and composites.

• It is caused by the release of internal stresses that were introduced during the forming process.

• Factors affecting spring back include material properties, forming process, and tooling design.

• Examples include metal sheets returning to the...read more

Product design guidelines are principles and standards that help ensure the quality, functionality, and manufacturability of a product.

• Consider the target audience and their needs

• Ensure the design is user-friendly and intuitive

• Follow industry standards and regulations

• Optimize for manufacturability and cost-effectiveness

• Prioritize safety and durability

• Incorporate feedback from stakeholders and end-users

• Use sustaina...read more

The stress-strain graph illustrates the mechanical behavior of ductile and brittle materials under load.

• Ductile materials exhibit a gradual increase in stress and strain, allowing for significant deformation before failure.

• Brittle materials show a steep slope in the elastic region and fail suddenly with little to no plastic deformation.

• The yield point in ductile materials indicates the transition from elastic to p...read more

The 321 principle is a guideline for fixture design that ensures proper alignment and stability.

• The 3 points refer to the minimum number of contact points required for stability.

• The 2 points refer to the minimum number of planes required for alignment.

• The 1 point refers to the minimum number of degrees of freedom allowed for the part being fixed.

• For example, a fixture for holding a cylindrical object may have thre...read more