Marine Electricals Designer Interview Questions and Answers

Q1. Basic technical questions from mechanical
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Q2. Basics of mechanical engineering
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Q3. Mechanical engineering basic questions
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Paper test given to candidates

Q1. What is your name
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Q2. Angke of projection explain
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Angle of projection refers to the angle at which an object is projected or launched into the air.
• It is the angle between the horizontal line and the direction in which the object is projected.

• The angle of projection affects the range and height of the projectile.

• For maximum range, the angle of projection should be 45 degrees.

• For maximum height, the angle of projection should be 90 degrees (vertical).
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Q3. Stress strain defination and curve
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Q4. Modes of heat transfer
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Heat transfer occurs through conduction, convection, and radiation.
• Conduction: Heat transfer through direct contact between materials (e.g. touching a hot pan)

• Convection: Heat transfer through the movement of fluids or gases (e.g. boiling water)

• Radiation: Heat transfer through electromagnetic waves (e.g. feeling the warmth of the sun)
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Q5. Angle of projection
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Angle of projection refers to the angle at which an object is launched into the air.
• Angle of projection affects the range and height of the projectile.

• The optimal angle of projection for maximum range is 45 degrees.

• Different angles of projection result in different trajectories of the projectile.

• The angle of projection is measured from the horizontal axis.
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Q1. Introducing yourself
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Q2. Why you need this job
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Basic Mechanical Engineering

Q1. CAD Knowledge basic
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Q2. Basic Measurement’s
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Q1. Detail on the projects I have worked
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Q1. What is oracle database and uses
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Q2. What is memory and storage
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Q1. Moment and shear force diagram
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Moment and shear force diagrams are graphical representations of the internal forces acting on a structural element.
• Moment diagram shows the variation of bending moment along the length of the beam.

• Shear force diagram shows the variation of shear force along the length of the beam.

• Both diagrams are essential for designing and analyzing structures.

• They help in determining the maximum bending moment and shear force that ...read more
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Q1. Plastic shrinkage?
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Q2. How many types of plastic material category?
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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?
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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?
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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?
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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?
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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?
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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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