L&T Construction Senior Design Engineer Interview Questions and Answers

Welding symbols are used to communicate welding information on engineering drawings.

• Welding symbols are used to indicate the type of weld, dimensions, and other important information related to the welding process.

• They are typically composed of a reference line, arrow, and various symbols and letters.

• Examples of welding symbols include fillet weld, groove weld, plug weld, and spot weld symbols.

• Understanding welding sym...read more

Types of welding include MIG, TIG, stick, and flux-cored welding.

• MIG welding uses a wire electrode and shielding gas to join metals.

• TIG welding uses a tungsten electrode and inert gas to create a strong weld.

• Stick welding, also known as shielded metal arc welding, uses a flux-coated electrode.

• Flux-cored welding uses a tubular wire filled with flux to protect the weld.

• Other types include spot welding, laser welding, and

Design engineers use a variety of tools to create and analyze designs.

• Design software like AutoCAD, SolidWorks, or CATIA is commonly used for creating 2D and 3D models.

• Simulation tools like ANSYS or COMSOL are used to analyze the performance of designs under different conditions.

• Prototyping tools like 3D printers or CNC machines are used to create physical prototypes for testing.

• Collaboration tools like Slack or Trello...read more

To create 3D models from 2D drawings, use CAD software to extrude, revolve, and loft shapes based on the dimensions and features shown in the drawings.

• Import the 2D drawing into CAD software such as AutoCAD or SolidWorks

• Identify key dimensions and features from the drawing

• Use extrude, revolve, and loft commands to create 3D shapes based on the 2D geometry

• Add details such as fillets, chamfers, and holes to complete the ...read more

I joined the company because of its innovative projects and collaborative work environment.

• Opportunity to work on cutting-edge projects

• Collaborative work environment

• Company's reputation in the industry

• Career growth opportunities

A treatment plant is a facility where wastewater is treated to remove contaminants before being discharged back into the environment.

• Treatment plants use a combination of physical, chemical, and biological processes to remove pollutants from wastewater.

• Common processes in treatment plants include screening, sedimentation, filtration, and disinfection.

• Examples of treatment plants include sewage treatment plants, water t...read more