KK LIGHTING INDIA Design Engineer Interview Questions, Process, and Tips

Plastic material types include thermoplastics, thermosets, and elastomers.

• Thermoplastics can be melted and reformed, such as polyethylene and PVC.

• Thermosets are rigid and cannot be melted, like epoxy and phenolic resins.

• Elastomers are flexible and elastic, such as silicone and rubber.

Preventing plastic defects involves proper material selection, design optimization, and quality control measures.

• Selecting the right type of plastic for the specific application

• Optimizing the design to minimize stress concentrations and molding issues

• Implementing quality control measures during manufacturing process

• Regular maintenance and inspection of molds and equipment

• Training staff on proper handling and processing

ABS is a thermoplastic polymer while nylon is a synthetic polymer. ABS is more rigid and impact-resistant, while nylon is more flexible and durable.

• ABS is a thermoplastic polymer, while nylon is a synthetic polymer

• ABS is more rigid and impact-resistant, while nylon is more flexible and durable

• ABS is commonly used in 3D printing and automotive parts, while nylon is used in textiles and industrial applications

The density of ABS plastic is around 1.04 g/cm³, while the density of nylon plastic is around 1.15 g/cm³.

• ABS plastic has a density of approximately 1.04 g/cm³

• Nylon plastic has a density of around 1.15 g/cm³

Plastic weight in CAD software can be calculated by determining the volume of the plastic part and multiplying it by the density of the plastic material.

• Create a 3D model of the plastic part in the CAD software.

• Calculate the volume of the plastic part using the CAD software's tools.

• Determine the density of the plastic material being used.

• Multiply the volume of the plastic part by the density of the plastic material to

The tonnage of molding machine required to fill a 200gm piece depends on the material being used and the design of the piece.

• Calculate the volume of the 200gm piece to determine the amount of material needed.

• Consider the material properties and flow characteristics to determine the appropriate tonnage of the molding machine.

• Methods such as injection molding or compression molding can be used depending on the design and

Low beam light provides short-range visibility without blinding oncoming drivers, while high beam light provides long-range visibility but can blind others.

• Low beam light is angled downwards to illuminate the road directly in front of the vehicle.

• High beam light is angled upwards to illuminate a longer distance ahead of the vehicle.

• Low beam light is used in normal driving conditions to avoid blinding oncoming drivers.

• H...read more

To solve short mold defects in injection molding, adjust injection speed, pressure, temperature, and cooling time.

• Adjust injection speed to ensure proper filling of the mold cavity.

• Increase injection pressure to prevent short shots.

• Optimize melt temperature to improve flow and reduce defects.

• Extend cooling time to allow the plastic to solidify properly.

• Check for any obstructions or blockages in the mold.

• Ensure proper v...read more

A3 paper sheet size is 297 x 420 mm.

• A3 paper size is commonly used for drawings, diagrams, and posters.

• It is part of the ISO 216 standard paper sizes.

• The dimensions of A3 paper are 297 x 420 mm or 11.7 x 16.5 inches.

PFMEA focuses on potential failures in the manufacturing process, while DFMEA focuses on potential failures in the design process.

• PFMEA stands for Process Failure Mode and Effects Analysis, while DFMEA stands for Design Failure Mode and Effects Analysis.

• PFMEA is used to identify and prioritize potential failure modes in the manufacturing process, while DFMEA is used to identify and prioritize potential failure modes in...read more

NPD (New Product Development) involves the process of designing, developing, and launching new products or services.

• Identifying market opportunities and customer needs

• Concept development and testing

• Design and engineering

• Prototyping and testing

• Commercialization and launch

• Continuous improvement and feedback loop

Listen actively, empathize, communicate clearly, set expectations, follow up.

• Listen actively to understand their needs and concerns.

• Empathize with their situation and show genuine care.

• Communicate clearly and effectively to ensure mutual understanding.

• Set realistic expectations and deliver on promises.

• Follow up to ensure satisfaction and address any issues that may arise.