L.G.Balakrishnan & Bros R&D Engineer Interview Questions and Answers

Q1. Tool test and surface test
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Q2. Surface modeling
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Q1. Technical Around
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Q1. Base discussion
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Q1. Drawing related questions
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Q2. Technical
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Q1. What is draft angel & Shutoff and Difference
Ans. 
Draft angle is the angle of the vertical wall of a mold or part, while shutoff is the point where two mold halves meet to prevent material flow.
• Draft angle is necessary for easy ejection of parts from molds.

• Shutoff is crucial for preventing material leakage and ensuring part accuracy.

• Draft angle is typically around 1-3 degrees, while shutoff is a precise meeting point of mold halves.

• Examples: Draft angle - plastic inje
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Q2. Please explain plastic defects and regulations
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Plastic defects are imperfections in plastic materials that can affect their performance and appearance. Regulations ensure safety and quality standards are met.
• Plastic defects can include air bubbles, warping, sink marks, and flow lines

• Regulations such as RoHS and REACH restrict the use of certain chemicals in plastics

• Defects can be minimized through proper material selection, processing techniques, and quality contro
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Q1. Tell me about yourself/your work experience
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I am a design engineer with 5 years of experience in product development and CAD modeling.
• Worked on designing and developing new products from concept to production

• Proficient in CAD software such as SolidWorks and AutoCAD

• Collaborated with cross-functional teams to ensure design feasibility and manufacturability

• Experience in prototyping and testing designs for performance and reliability
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Q2. Possible answer to “Tell me about yourself”
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Q3. Tell me about yourself.
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Q4. Why are you leaving your current job?
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Seeking new challenges and opportunities for growth.
• Looking for new challenges and opportunities to grow professionally

• Interested in exploring different industries or technologies

• Seeking a better work-life balance or company culture

• Want to relocate to a different city or country for personal reasons
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Q5. Why should we hire you?
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I have a strong background in design engineering with a proven track record of successful projects.
• I have a Bachelor's degree in Mechanical Engineering with a focus on design principles.

• I have completed multiple design projects during my internships, showcasing my skills in CAD software and problem-solving.

• I have received positive feedback from previous employers on my attention to detail and ability to meet project de
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Cad test on catia software.

Q1. Plastic categories?
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Q2. Prevention of plastic defects?
Ans. 
Preventing plastic defects involves proper material selection, design optimization, and quality control measures.
• Selecting the right type of plastic for the application

• Optimizing the design to minimize stress concentrations

• Implementing proper molding techniques and parameters

• Conducting thorough quality control inspections

• Addressing any issues promptly to prevent defects from recurring
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Q3. When you make a design in any plastic component. what you are design consideration?
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Design considerations for plastic components include material selection, manufacturability, functionality, aesthetics, and cost.
• Material selection based on properties like strength, flexibility, and chemical resistance

• Consideration of manufacturability, such as moldability and ease of assembly

• Ensuring functionality requirements are met, such as mechanical strength or thermal resistance

• Aesthetics like color, texture, an...read more
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Q1. 1.What is stress? 2.Bending moment? 3.Quality criteria in FEA? 4.What is tet collapse What is test correlation 5.Process of FEA modelling 6.Types of elements in Nastran, dyna?
Ans. 
Answers to questions related to CAE engineering including stress, bending moment, quality criteria in FEA, tet collapse, test correlation, FEA modelling process, and types of elements in Nastran and Dyna.
• Stress is the force per unit area that a material experiences when subjected to an external load.

• Bending moment is the moment that causes a beam to bend.

• Quality criteria in FEA include accuracy, convergence, and stabil...read more
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Q2. Tell about yourself ?
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Q3. How do you create spot weld, bolt in ANSA
Ans. 
Spot welds and bolts can be created in ANSA using various tools and methods.
• For spot welds, use the Spot Weld tool and select the two surfaces to be welded together.

• For bolts, use the Bolt tool and select the two surfaces to be bolted together. Specify the bolt type, size, and other parameters.

• ANSA also provides options to create spot welds and bolts automatically based on predefined rules and criteria.

• Ensure that the ...read more
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Q1. CAD test in catia
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CAD test in CATIA evaluates candidate's proficiency in using CATIA software for designing engineering projects.
• Demonstrate ability to create 3D models using CATIA software

• Show proficiency in creating assemblies and performing simulations in CATIA

• Explain experience in generating 2D drawings and technical documentation in CATIA
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Q2. Plastic material, defects
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Q1. Tell me about yourself Favourite engineering subject
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Q1. 1) About projects 2) plastic 3) sheet metal
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Q2. Plastic, gd&t, sheetal, creo
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