Yantrika Instruments Mechanical Engg. Design Interview Questions and Answers

To create a thread 20x1.5 in a 2mm sheet, use a tap and die set with the appropriate size and pitch.

• Select a tap and die set with a 20x1.5 size and pitch

• Drill a hole in the 2mm sheet with a diameter slightly smaller than the tap size

• Insert the tap into the hole and turn it clockwise to create the thread

• Use the die to clean up and refine the thread

• Ensure the thread is the correct size and pitch using a thread gauge

Basic knowledge of GD&T refers to understanding the symbols, rules, and principles of Geometric Dimensioning and Tolerancing.

• Understanding the symbols used in GD&T such as concentricity, perpendicularity, and flatness

• Knowing the rules for applying GD&T to drawings and designs

• Understanding the principles of GD&T such as datum features and tolerance zones

• Being able to interpret and communicate GD&T requirements to others

• ...read more

1st angle & 3rd angle projection are two methods of representing a 3D object on a 2D plane.

• 1st angle projection: object is placed in front of the viewing plane and the planes of projection are between the object and the viewer

• 3rd angle projection: object is placed behind the viewing plane and the planes of projection are between the object and the viewer

• In 1st angle projection, the top view is placed above the front vi...read more