Portescap Interview Questions, Process, and Tips

First angle projection and third angle projection are two methods of creating 2D drawings of 3D objects.

• First angle projection is commonly used in Europe and Asia, while third angle projection is commonly used in North America.

• In first angle projection, the object is placed in front of the viewing plane and the orthographic projections are drawn behind it.

• In third angle projection, the object is placed behind the viewi...read more

Types of fits and tolerances are important in manufacturing to ensure proper functioning of parts.

• Fits refer to the degree of tightness or looseness between two mating parts.

• Clearance fit allows for free movement between parts, while interference fit requires force to assemble.

• Transition fit is a combination of clearance and interference fit.

• Tolerances refer to the allowable variation in dimensions of a part.

• A tight to...read more