Macbro Technology Design Engineer Interview Questions and Answers

Q1. Stress strain curve and defination
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Q2. Hooks law from strength of material
Ans. 
Hook's law states that the force needed to extend or compress a spring by a distance is proportional to that distance.
• Force is directly proportional to displacement

• The formula is F = kx, where F is the force, k is the spring constant, and x is the displacement

• The law is applicable to springs, rubber bands, and other elastic materials
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Q1. Tool test on Creo creation and dimensions within 2 hours
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Q1. Salary discussion from current
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Q1. Why you want to switch job
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Q2. Why should we hire you
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Q1. What is GD&T and where it used
Ans. 
GD&T stands for Geometric Dimensioning and Tolerancing. It is a system used to define and communicate engineering tolerances.
• GD&T is a symbolic language used to specify the allowable variations in form, size, orientation, and location of features on a part.

• It provides a precise and standardized way to communicate design requirements to manufacturers and ensure the interchangeability of parts.

• GD&T is commonly used in in...read more
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Q2. Tell me about DFMEA
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DFMEA stands for Design Failure Mode and Effects Analysis. It is a systematic approach to identify and mitigate potential failures in a product or process design.
• DFMEA is a proactive risk assessment tool used during the design phase of a project.

• It involves identifying potential failure modes, their causes, and the effects they may have on the system.

• The severity, occurrence, and detection ratings are assigned to each ...read more
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Q3. What you know about sheet metal
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Sheet metal refers to thin, flat pieces of metal used in various applications such as construction and manufacturing.
• Sheet metal is typically made from materials like steel, aluminum, or copper.

• It is commonly used in industries like automotive, aerospace, and HVAC.

• Sheet metal can be formed into different shapes through processes like bending, cutting, and welding.

• It is often used to create components like ducts, enclos...read more
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Q4. What are the sheet metal cutting process
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Sheet metal cutting processes involve various methods to cut and shape sheet metal.
• Shearing: Cutting straight lines using a shear or guillotine

• Laser cutting: Using a laser beam to melt and vaporize the metal

• Plasma cutting: Using a high-velocity jet of ionized gas to cut through the metal

• Waterjet cutting: Using a high-pressure stream of water mixed with abrasive particles

• Punching: Creating holes or shapes using a punch ...read more
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Q1. Need of DFMEA in design?
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DFMEA is essential in design to identify and mitigate potential failure modes early in the development process.
• DFMEA helps in identifying potential failure modes and their effects on the system.

• It allows for prioritization of risks based on severity, occurrence, and detection.

• DFMEA aids in developing strategies to mitigate or eliminate identified risks.

• It helps in improving product reliability, safety, and quality.

• DFME...read more
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Q2. Why FEA is carried out?
Ans. 
FEA is carried out to analyze the behavior of structures under different loading conditions and optimize their design.
• To predict how a structure will react under different loading conditions

• To optimize the design of a structure by identifying areas of high stress

• To reduce the number of physical prototypes needed for testing

• To save time and cost in the design process

• To ensure the safety and reliability of a structure
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Q1. Will you ready to work first 3 month without salary?
Ans. 
I am willing to work without salary for the first 3 months to gain experience and prove my capabilities.
• I am open to working without salary for the initial 3 months to demonstrate my dedication and commitment.

• I understand the importance of gaining experience and building a strong foundation in the company.

• I am confident that my skills and contributions during this period will showcase my value to the team.

• I am willing ...read more
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Q2. You have to submit your original graduation certificate for 2 yrs lockin to work in this company
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Calculate the load-bearing capacity of a beam given its dimensions and material properties

Q1. Drow shear force diagram and bending moment diagram
Ans. 
Shear force and bending moment diagrams show the variation of internal forces along a structural element.
• Shear force diagram shows the variation of shear force along the length of a beam.

• Bending moment diagram shows the variation of bending moment along the length of a beam.

• Shear force changes sign at point of applied load, while bending moment is zero at point of applied load.
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Q2. Design software about Pv elite
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PV Elite is a software used for designing pressure vessels and heat exchangers in the oil and gas industry.
• PV Elite is commonly used by civil engineers in the oil and gas industry for designing pressure vessels and heat exchangers.

• The software allows engineers to analyze and design pressure vessels according to various international codes and standards.

• PV Elite provides tools for designing components such as shells, he...read more
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Q3. What is Water cement ratio?
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Water cement ratio is the ratio of the weight of water to the weight of cement used in a concrete mix.
• Water cement ratio is a crucial factor in determining the strength and durability of concrete.

• A lower water cement ratio results in stronger and more durable concrete.

• The ideal water cement ratio varies depending on the type of concrete mix and its intended use.

• For example, a water cement ratio of 0.5 is commonly used
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Q4. Father of mix concrete ratio?
Ans. 
The father of mix concrete ratio is Duff Abrams.
• Duff Abrams is known as the father of mix concrete ratio.

• He developed the Abrams' Law which is used to determine the water-cement ratio in concrete mix design.

• Abrams' Law states that the strength of concrete is inversely proportional to the water-cement ratio.
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Q1. How to find the Reactions
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Reactions can be found by analyzing the external forces and moments acting on a structure.
• Calculate the sum of forces in the x, y, and z directions to find the reaction forces at supports

• Analyze the moments around different points to determine the reaction moments

• Consider the equilibrium of the structure to ensure all forces and moments are balanced
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Q2. What is Steel Structures
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Steel structures are structures made primarily of steel components, known for their strength, durability, and versatility.
• Steel structures are commonly used in construction for buildings, bridges, and other infrastructure.

• They are known for their high strength-to-weight ratio, allowing for lighter and more efficient designs.

• Steel structures can be prefabricated off-site and assembled on-site, speeding up construction t...read more
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Q3. How to define the moment and shear connection s
Ans. 
Moment and shear connections are used in structural engineering to transfer forces between members.
• Moment connections transfer bending forces between beams and columns

• Shear connections transfer shear forces between beams and columns

• Moment connections can be achieved through welding, bolting, or a combination of both

• Shear connections typically involve bolts or welds to transfer the shear forces
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Q4. How to solve the Point load, UDL, UVL load problems
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To solve Point load, UDL, UVL load problems, calculate reactions, draw shear force and bending moment diagrams, and apply equilibrium equations.
• Calculate reactions at supports using equilibrium equations

• Draw shear force diagram by summing vertical forces at each section

• Draw bending moment diagram by summing moments at each section

• Apply equations of equilibrium to find internal forces and stresses

• Consider the type of lo...read more
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Q1. Logical Thinking questions
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Q2. How to define the problematic paper's
Ans. 
Problematic papers are defined by their unclear objectives, lack of methodology, inconsistent results, and poor organization.
• Unclear objectives: The paper does not clearly state its research goals or objectives.

• Lack of methodology: The paper fails to explain how the research was conducted or the methods used.

• Inconsistent results: The findings presented in the paper do not align with the research question or hypothesis.

• ...read more
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Q1. What is Retaining wall
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A retaining wall is a structure designed to hold back soil or other materials to prevent erosion or collapse.
• Retaining walls are commonly used in landscaping to create terraces or level areas on sloped land.

• They can be made of various materials such as concrete, stone, brick, or wood.

• Retaining walls can be either gravity walls, cantilever walls, sheet pile walls, or anchored walls.

• Proper drainage behind the retaining w...read more
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Basic civil engineering aptitude

Q1. Construction design, steel connections, basic civil, Graphics
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Q2. Shear force and bending moment diagram
Ans. 
Shear force and bending moment diagrams are graphical representations of internal forces in a structural element.
• Shear force diagram shows the variation of shear force along the length of the beam.

• Bending moment diagram shows the variation of bending moment along the length of the beam.

• Shear force is the sum of all vertical forces acting on one side of a cut section of the beam.

• Bending moment is the sum of all moments ...read more
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Q3. Load calculation in a framed structure
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Load calculation in a framed structure involves determining the forces acting on the structure to ensure it can safely support the intended loads.
• Identify all the loads acting on the structure, including dead loads (permanent), live loads (temporary), and environmental loads (wind, snow, etc.)

• Calculate the total load on each structural element by summing up all the individual loads it must support

• Consider factors such ...read more
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