Wipro PARI Design Engineer Interview Questions and Answers

Q1. What is difference between == and ===?
Ans. 
The difference between == and === is that == compares the values of two variables, while === compares both the values and the data types.
• The == operator performs type coercion, meaning it converts the operands to a common type before comparison.

• The === operator does not perform type coercion and requires both the values and the data types to be the same for a true comparison.

• For example, 1 == '1' returns true because t...read more
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Q1. Description about engineering drawing
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Engineering drawing is a visual representation of an object or system, typically created using specialized software or by hand.
• Engineering drawings communicate design intent and specifications to manufacturers and other stakeholders.

• They include details such as dimensions, materials, tolerances, and assembly instructions.

• Common types of engineering drawings include orthographic projections, isometric views, and explode...read more
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Q1. What is difference between MCB &MCCB?
Ans. 
MCB is a miniature circuit breaker used for low currents, while MCCB is a molded case circuit breaker used for higher currents.
• MCB is designed for low currents, typically up to 100A, while MCCB is designed for higher currents, typically up to 2500A.

• MCB is a compact device with fixed trip settings, while MCCB is larger and has adjustable trip settings.

• MCB is commonly used in residential and commercial applications, whil...read more
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Q2. What is mean by relay and how it operates?
Ans. 
A relay is an electrically operated switch that uses an electromagnet to mechanically operate the switch contacts.
• Relays are used to control high power circuits with a low power signal.

• When the coil of the relay is energized, it creates a magnetic field that causes the switch contacts to close or open.

• Relays are commonly used in automotive applications, industrial controls, and home appliances.

• There are different types...read more
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Q1. 1] Creating 3d model. 2] WHAT IS CASTING PROCESS 3] WHAT IS SHEET METAL 4] GD&T
Ans. 
Casting process involves pouring molten metal into a mold to create a desired shape. Sheet metal is metal formed into thin, flat pieces. GD&T stands for Geometric Dimensioning and Tolerancing.
• Casting process involves melting metal and pouring it into a mold to create a specific shape.

• Sheet metal is metal that has been formed into thin, flat pieces, often used in manufacturing for various applications.

• GD&T is a system f...read more
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Q2. WHAT IS GD&T IN MECHANICAL? DESCRIBLE ALL IN DETAILS .
Ans. 
GD&T stands for Geometric Dimensioning and Tolerancing, a system used in mechanical engineering to define and communicate engineering tolerances.
• GD&T is a symbolic language used on engineering drawings to specify the allowable variation in form, size, and orientation of features.

• It helps ensure that parts and assemblies will fit together and function properly.

• GD&T uses symbols such as squares, circles, and triangles to...read more
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Q3. WHICH POINTS CONSIDERED DURING CASTING FEASIBLITY?
Ans. 
Points to consider during casting feasibility include material selection, part geometry, draft angles, wall thickness, and surface finish.
• Material selection - Choose a material suitable for the part's function and properties.

• Part geometry - Ensure the part can be easily cast without complex shapes or undercuts.

• Draft angles - Include draft angles to allow for easy removal of the part from the mold.

• Wall thickness - Maint...read more
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Q4. UG NX COMMANDS?
Ans. 
UG NX is a software used for designing, engineering, and manufacturing products.
• UG NX commands are used for creating and editing 3D models.

• Some common UG NX commands include Extrude, Revolve, Fillet, and Sweep.

• Commands can be accessed through the toolbar or by typing in the command line.

• UG NX also has advanced features like synchronous technology for flexible editing.

• Users can customize commands and create macros for r
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Q1. Tell me about your projects did in previous company..
Ans. Prepare everything in the Resume, dont fake anything in resume.
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Q2. Some technical question related to contains of the resume.
Ans. Prepare well the contains of your resume.
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Q1. Walk me through your profile.
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Q2. What are your responsibilities in your previous organisation?
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Q3. Are you aware of GD&T?
Ans. 
Yes, GD&T stands for Geometric Dimensioning and Tolerancing, a system for defining and communicating engineering tolerances.
• GD&T is a system used in engineering to define and communicate tolerances for manufacturing and inspection.

• It uses symbols, such as concentricity, flatness, and perpendicularity, to specify geometric characteristics of parts.

• GD&T helps ensure that parts are manufactured and inspected consistently ...read more
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Q4. Which are the operations performed on sheet metal to increase the strength of it without changing thickness?
Ans. 
Operations like bending, folding, and crimping can increase the strength of sheet metal without changing its thickness.
• Bending: This process involves bending the sheet metal along a straight line to increase its strength.

• Folding: Folding the sheet metal creates multiple layers, increasing its strength.

• Crimping: Crimping involves creating small indentations or folds in the sheet metal to increase its rigidity.

• Rolling: R...read more
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Q5. Do you know modelling in CREO?
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Q6. What are the parts that you've designed in creo and what is the application?
Ans. 
I have designed various parts in Creo for applications in automotive, aerospace, and consumer electronics industries.
• Designed engine components for automotive industry

• Designed aircraft structural components for aerospace industry

• Designed smartphone casings for consumer electronics industry
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Q7. From your experience what are the factors that needs to be considered while designing a component for sheet metal and plastic?
Ans. 
Factors to consider when designing components for sheet metal and plastic
• Material selection based on properties and application requirements

• Design for manufacturability to ensure ease of production and cost-effectiveness

• Consideration of material thickness and bending radius for sheet metal components

• Wall thickness, draft angles, and rib design for plastic components

• Integration of features like fastening methods, mounti...read more
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Q8. What are your salary expectations?
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Q1. What do you know about MBD?
Ans. 
MBD stands for Model-Based Design, a methodology used in engineering to develop systems using models as the primary source of information.
• MBD involves creating a model of the system being designed, which can be used for simulation, verification, and automatic code generation.

• It helps in reducing development time and costs by allowing engineers to test and validate designs before physical implementation.

• Popular tools us...read more
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Q2. Do you know the symbol of position tolerance?
Ans. 
Yes, the symbol for position tolerance is a circle with a horizontal line through the middle.
• The symbol for position tolerance is a circle with a horizontal line through the middle

• It is used in engineering drawings to specify the allowable deviation in the location of a feature

• Position tolerance controls the location of a feature relative to a specified datum
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Techical Test of around 50 questions, mostly of the level of GATE 1 mark questions. Time duration 1. hr

Q1. 1. what are the considerations while selecting engineering materials for specific applications? 2. How would you calculate sheer strength of a round cross section metal bar? 3. Explain your project work.
Ans. 
Considerations for selecting engineering materials, calculating sheer strength of a metal bar, and explaining project work.
• Consider factors like strength, durability, cost, and availability when selecting materials for specific applications.

• Calculate sheer strength of a round cross section metal bar using the formula: Sheer Strength = (0.5 * Ultimate Tensile Strength)

• In project work, explain the objectives, methodology
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Q2. Gave me a mathematical problem, to find out the least path traveled from one point to another while satisfying a particular condition.
Ans. Bssically I had to use create a equation for the linear path travelled with constraint defined from given inputs. Equatio was formulated Using geometry and analytical techniques. He did not ask me to solve the equations, as he was convinced with the approach.
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Q1. Is Location fine with you?
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Q2. How would you see yourself growing in 5 years?
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