Defence Research & Development Organisation Interview Questions, Process, and Tips

1st angle projection is a method of creating a 2D drawing of a 3D object where the view is projected onto a plane located in front of the object.

• The object is placed in the first quadrant of the coordinate system

• The plane of projection is placed between the object and the observer

• The observer looks towards the object through the plane of projection

• The view of the object is projected onto the plane of projection

• Commonly

3rd angle projection is a method of creating a 2D drawing of a 3D object where the view is projected onto a plane from the opposite side of the object.

• The object is placed in the third quadrant of the coordinate system.

• The view is projected onto a plane that is placed in front of the object.

• The resulting drawing shows the object as if it has been sliced and unfolded onto the plane.

• Commonly used in engineering and manuf...read more

GD&T stands for Geometric Dimensioning and Tolerancing, a system used to define and communicate engineering tolerances.

• GD&T is a language used to communicate design intent and ensure parts are manufactured to the correct specifications.

• It uses symbols and annotations to define the allowable variation in form, orientation, location, and size of features on a part.

• GD&T is important for ensuring parts fit together correct...read more