RDJM Medical College and Hospital Interview Questions and Answers

The decision between sheetmetal bracket or casting is based on factors like complexity, strength, cost, and production volume.

• Consider the complexity of the part - sheetmetal brackets are generally simpler to design and manufacture compared to castings.

• Evaluate the required strength and load-bearing capacity - castings are often preferred for heavy-duty applications due to their superior strength.

• Assess the cost implications - sheetmetal brackets are usually more cost-effecti...read more

Material selection is crucial for design engineering. Currently using aluminum for its lightweight and corrosion resistance.

• Consider mechanical properties like strength, stiffness, and ductility when selecting materials

• Think about environmental factors such as temperature, moisture, and chemicals

• Aluminum is commonly used for its lightweight nature, corrosion resistance, and ease of machining

Modelling and detailing of large sheet metal involves creating 3D models and producing detailed drawings for manufacturing.

• Use CAD software to create accurate 3D models of sheet metal components

• Consider material thickness, bend radii, and tolerances in the design

• Apply appropriate sheet metal forming techniques such as bending, punching, and welding

• Generate detailed drawings with dimensions, tolerances, and annotations for manufacturing

• Ensure proper nesting and efficient mater...read more

Circularity refers to the overall roundness of a feature, while runout refers to the amount of wobble or variation in a feature's position relative to a reference axis.

• Circularity is a 2D tolerance that controls the overall roundness of a feature, ensuring it is within a specified circular boundary.

• Runout is a 3D tolerance that measures the amount of wobble or variation in a feature's position relative to a reference axis.

• Circularity is typically used for features like holes ...read more

GD&T stands for Geometric Dimensioning and Tolerancing. It is a system for defining and communicating engineering tolerances.

• GD&T is used to specify the allowable variations in form, size, and orientation of part features.

• It helps improve the quality of engineering drawings by providing a clear and concise way to communicate design requirements.

• GD&T is essential for ensuring parts fit together properly and function as intended.

• Examples of GD&T symbols include position, concen...read more

DFMEA stands for Design Failure Mode and Effects Analysis, a systematic approach to identifying and preventing potential failures in a product design.

• Identify potential failure modes in the design

• Determine the effects of each failure mode on the system

• Assign a severity ranking to each failure mode

• Identify potential causes of each failure mode

• Assign a probability ranking to each cause

• Determine the ability to detect each failure mode before it occurs

• Calculate the Risk Priority ...read more

Design an L bracket with 2 mounting holes.

• Start by determining the dimensions of the L bracket (length, width, thickness)

• Decide on the placement of the 2 mounting holes (size, distance from edges)

• Consider the material for the bracket (steel, aluminum, etc.)

• Ensure the bracket is sturdy and can support the intended load

• Create a detailed CAD drawing of the L bracket design