Mercedes-Benz Research and Development India Lead Design Engineer Interview Questions and Answers

The interrupt method in the kernel is a mechanism used to handle hardware interrupts and prioritize their execution.

• The interrupt method is a part of the kernel's interrupt handling mechanism.

• It is responsible for handling hardware interrupts and determining their priority.

• The interrupt method is typically implemented as a function or a set of functions in the kernel code.

• It is used to manage and process interrupts fro...read more

Side member and cross member are structural components in the Body in White (BIW) of a vehicle, providing support and rigidity.

• Side members are longitudinal structural components that run along the sides of the vehicle, providing support and connecting various components.

• Cross members are structural components that run across the width of the vehicle, connecting the side members and providing additional rigidity.

• These ...read more

Annotations, PMI stands for Product Manufacturing Information, which includes dimensions, tolerances, materials, and other specifications on a technical drawing.

• PMI is used to communicate important information about a product's design and manufacturing requirements.

• Annotations are typically added to CAD drawings to provide clarity and guidance to manufacturers.

• Examples of PMI include geometric dimensioning and toleranc...read more

Beads and darts are decided based on design requirements, manufacturing constraints, and structural considerations in BIW members.

• Consider design requirements such as stiffness, strength, and crashworthiness.

• Take into account manufacturing constraints like tooling limitations and cost.

• Evaluate structural considerations such as load distribution and stress concentrations.

• Examples: Beads are often used to increase stiffn...read more

Various methods such as stamping, welding, and bonding are used for making BIW in manufacturing processes.

• Stamping: involves pressing a sheet of metal into a die to create the desired shape

• Welding: joining metal pieces together using heat or pressure

• Bonding: using adhesives to attach metal components

• Riveting: joining metal parts using rivets

• Hydroforming: shaping metal using fluid pressure

Hydroforming uses fluid pressure to shape metal, while forming involves shaping metal using mechanical force.

• Hydroforming uses fluid pressure to shape metal into complex shapes

• Forming involves shaping metal using mechanical force such as bending, stretching, or compressing

• Hydroforming is often used in automotive industry for creating lightweight and strong components

• Forming can be done through processes like stamping,

Yes, GD&T (Geometric Dimensioning and Tolerancing) is used in engineering to communicate design specifications.

• GD&T is a symbolic language used on engineering drawings to specify the allowable variations in form, size, and orientation of features.

• It helps ensure that parts fit together correctly and function properly.

• GD&T can improve quality, reduce costs, and lead to more efficient manufacturing processes.

• Examples of ...read more

Benchmarking and master section are important in design for setting standards and improving performance.

• Benchmarking involves comparing design processes, products, or performance against industry standards or competitors.

• Master section refers to a standardized section of a design that serves as a reference point for consistency and quality.

• Both benchmarking and master section help in setting benchmarks, identifying are...read more

LMC & MMC are GD&T concepts used to define the extreme sizes of a part. LMC is the smallest size while MMC is the largest size.

• LMC (Least Material Condition) is the condition where a part has the least amount of material, ensuring the smallest size possible.

• MMC (Max Material Condition) is the condition where a part has the most amount of material, ensuring the largest size possible.

• GD&T uses LMC and MMC to establish th...read more

Valve design calculation involves determining the valve size, type, and material based on the fluid properties and system requirements.

• Determine the flow rate and pressure drop across the valve

• Select the appropriate valve type (e.g. globe, gate, ball) based on the application

• Choose the valve material based on the fluid properties and compatibility

• Calculate the valve size based on the flow rate and pressure drop

• Consider...read more