Amber Enterprises India Design Engineer Interview Questions and Answers

Q1. Plastic shrinkage?
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Q2. How many types of plastic material category?
Ans. 
There are seven main categories of plastic materials.
• Thermoplastics

• Thermosets

• Elastomers

• Composites

• Biodegradable plastics

• Engineering plastics

• High-performance plastics
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Q3. Plastic rib thickness standard?
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Plastic rib thickness standard varies depending on the application and material used.
• Plastic rib thickness is typically between 0.5mm to 5mm.

• Thicker ribs provide more strength but may increase material usage and cost.

• Thinner ribs are more cost-effective but may be prone to warping or breaking.

• Consider the material properties and intended use when determining rib thickness.

• Consult industry standards and guidelines for s
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Q4. How many types of defects in plastic?
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There are three main types of defects in plastic: surface defects, physical defects, and chemical defects.
• Surface defects include scratches, sink marks, and flow marks.

• Physical defects include bubbles, voids, and warping.

• Chemical defects include discoloration, degradation, and contamination.
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Q1. Diff b/w hot runner & cold runner?
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Q2. How to prevent 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

• Training staff on proper handling and storage of plastic materials
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Q3. No. of tonnage molding machine you are used?
Ans. 
I have experience working with various tonnage molding machines, including 50-ton, 100-ton, and 200-ton machines.
• 50-ton molding machine

• 100-ton molding machine

• 200-ton molding machine
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Q4. What is draft angle in plastic?
Ans. 
Draft angle in plastic is the degree of taper or slope applied to the vertical walls of a plastic part to facilitate its ejection from the mold.
• Draft angles are typically recommended to be between 1-3 degrees for most plastic parts

• Draft angles help prevent the part from getting stuck in the mold during ejection

• Examples of draft angles include adding a slight taper to the sides of a plastic cup or the walls of a plastic
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Q5. What is parametric modelling?
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Parametric modelling is a design approach where the model is defined by a set of parameters and rules that govern its shape and size.
• Uses parameters to define the shape and size of the model

• Allows for easy modification of the design by changing parameters

• Enables creation of complex designs with interconnected features

• Commonly used in CAD software like SolidWorks and Autodesk Inventor
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Q6. How to solve plastic defects issue in plastic?
Ans. 
Plastic defects can be solved by identifying root causes, adjusting processing parameters, using quality materials, and implementing proper maintenance.
• Identify root causes of defects such as improper molding conditions or poor material quality

• Adjust processing parameters like temperature, pressure, and cooling rate to optimize production

• Use high-quality materials to ensure consistency and durability of the final produ...read more
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Q7. Cad test on NX Software 2306 version? Plastic parts devlop in cad softwares?
Ans. 
Yes, CAD tests can be conducted on NX Software 2306 version. Plastic parts can be developed in CAD software.
• CAD tests can be performed on NX Software 2306 version to ensure compatibility and functionality.

• CAD software allows for the design and development of plastic parts with precision and accuracy.

• Features like 3D modeling, simulation, and analysis tools in CAD software aid in the development of plastic parts.

• Example...read more
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Not very easy nor hard

Q1. 1st angle 3rd angle drawing difference
Ans. 
1st angle and 3rd angle drawings are two different methods of representing a 3D object on a 2D plane.
• 1st angle projection is commonly used in Europe and Asia, where the object is imagined to be in the first quadrant, while 3rd angle projection is commonly used in North America, where the object is imagined to be in the third quadrant.

• In 1st angle projection, the top view is placed below the front view, while in 3rd ang...read more
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Q2. Different symbols of drawing
Ans. 
Different symbols used in engineering drawings represent various elements and features.
• Symbols for dimensions (e.g. diameter, length)

• Symbols for surface finish (e.g. roughness)

• Symbols for welding (e.g. fillet weld)

• Symbols for electrical components (e.g. resistor)

• Symbols for mechanical components (e.g. gear)
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Q3. Cpm pert related
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Q1. Introduction about your self
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Q2. Why you choose this job
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Basic Engineering of Mechanical

Q1. Knowledge about CAD
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Q2. Measurements usage
Ans. 
Measurements are crucial in design engineering for ensuring accuracy and precision in the development process.
• Measurements are used to determine dimensions, tolerances, and material properties of components.

• They help in ensuring that the final product meets the required specifications and standards.

• Various tools such as calipers, micrometers, and gauges are used for taking measurements.

• Measurements also play a key role...read more
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Quantitative and qualitative reasoning, electrical and electronics basics

Q1. Projects based , basic electronics concepts
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Q2. Embedded projects related questions
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Not very easy nor hard

Q1. 1st angle 3rd angle drawing difference
Ans. 
1st angle and 3rd angle drawings are two different methods of representing a 3D object on a 2D plane.
• 1st angle projection is commonly used in Europe and Asia, where the object is imagined to be in the first quadrant, while 3rd angle projection is commonly used in North America, where the object is imagined to be in the third quadrant.

• In 1st angle projection, the top view is placed below the front view, while in 3rd ang...read more
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Q2. Different symbols of drawing
Ans. 
Different symbols used in engineering drawings represent various elements and features.
• Symbols for dimensions (e.g. diameter, length)

• Symbols for surface finish (e.g. roughness)

• Symbols for welding (e.g. fillet weld)

• Symbols for electrical components (e.g. resistor)

• Symbols for mechanical components (e.g. gear)
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Q3. Cpm pert related
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