HCLTech Design Engineer Interview Questions, Process, and Tips

Q1. 1. Creo related all questions 2. GD&T 3. sheet metal / casting 4. Basic engineering questions
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Q2. Hole to hole distance ( max/min) with a feature control frame with MMC modifier at specific diameter
Ans. 
The hole to hole distance with a feature control frame with MMC modifier at a specific diameter is determined by the geometric tolerance specified in the feature control frame.
• The maximum and minimum distances between the holes are determined by the size of the feature control frame and the MMC modifier.

• The MMC modifier allows for the maximum material condition of the part, which affects the allowable tolerance for the...read more
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Q3. Explain bonus tolerance concept.
Ans. 
Bonus tolerance is an additional tolerance allowed beyond the basic tolerance to ensure proper fit and function of parts.
• Bonus tolerance is used to compensate for variations in manufacturing processes or materials.

• It is typically added to the upper limit of the basic tolerance to ensure proper functionality.

• Bonus tolerance is often specified in engineering drawings to ensure parts can still fit together within acceptab...read more
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Q4. Detailed explanation of a feature control frame.
Ans. 
A feature control frame is a symbol used in engineering drawings to specify geometric tolerances and control the location, orientation, and form of features.
• It consists of geometric characteristic symbols, tolerance values, and datum references.

• The geometric characteristic symbol indicates the type of tolerance (e.g. position, concentricity, flatness).

• Tolerance values specify the allowable deviation from the perfect ge...read more
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Q5. What is the similarity of circularity and circular run out?
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Circularity and circular run out are both measurements of how well a circular object conforms to its intended shape.
• Circularity measures the overall roundness of a circle, while circular run out measures the variation in the center point of the circle as it rotates.

• Both measurements are important in ensuring the proper functioning of rotating parts in machinery.

• For example, in a car engine, circularity ensures that pis...read more
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Q1. Previous experience
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Q1. Previous experience and project
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Q1. Explain GD&T and its uses in manufacturing
Ans. 
GD&T is a symbolic language used to communicate design specifications and tolerances in manufacturing.
• GD&T stands for Geometric Dimensioning and Tolerancing

• It uses symbols to communicate design specifications and tolerances

• It ensures that parts are manufactured to the correct size, shape, and orientation

• It reduces errors and improves quality in manufacturing

• Examples of GD&T symbols include concentricity, perpendiculari
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Q2. What is Stress and formula of stress
Ans. 
Stress is the force per unit area acting on a material. Formula: Stress = Force/Area
• Stress is a measure of the internal forces in a material

• It is calculated by dividing the force applied to the material by its cross-sectional area

• Stress can be tensile, compressive, or shear

• Examples of stress include the weight of a book on a table, the force of wind on a building, and the pressure of water on a dam
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Q1. What are your strengths
Ans. 
My strengths include problem-solving, attention to detail, and creativity.
• Strong problem-solving skills: I enjoy analyzing complex problems and finding innovative solutions.

• Attention to detail: I have a meticulous approach to my work, ensuring accuracy and precision.

• Creativity: I have a knack for thinking outside the box and coming up with unique design ideas.

• Strong technical skills: I am proficient in various design s...read more
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Q2. What are your weakness
Ans. 
One of my weaknesses is that I can be overly detail-oriented, which sometimes slows down my progress.
• I tend to focus on small details and can sometimes lose sight of the bigger picture.

• I may spend too much time perfecting a design or solution, which can delay project timelines.

• For example, in a previous project, I spent extra time refining the aesthetics of a product, which caused a slight delay in its release.
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General Aptitude and domain related questions

Q1. General HR questions
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Q2. Self intro, job description, willing to relocate and shifts
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Q3. Emerging technologies
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Q1. GD&T symbols and where are they used
Ans. 
GD&T symbols are used in engineering drawings to specify geometric tolerances and control the quality of manufactured parts.
• Used in engineering drawings to specify geometric tolerances

• Help control the quality of manufactured parts

• Common symbols include concentricity, perpendicularity, flatness, and position
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Q2. What is tolerance stackup
Ans. 
Tolerance stackup is the accumulation of variations in dimensions and tolerances in a product design.
• Tolerance stackup occurs when the accumulated variations in dimensions and tolerances of individual components in an assembly result in deviations from the intended design.

• It is important to consider tolerance stackup to ensure that all components fit together properly and meet the required specifications.

• Tolerance stac...read more
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Q1. About the project
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Q2. Sheet metal guidelines
Ans. 
Sheet metal guidelines are rules and recommendations for designing and manufacturing sheet metal parts.
• Design parts with minimum bends to reduce cost and complexity

• Use standard sheet metal thicknesses to avoid custom tooling

• Add flanges for strength and rigidity

• Avoid sharp corners to prevent cracking during bending

• Design parts with consistent bend radii for uniformity
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Q1. Technical questions on control panel
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Q2. Technical questions for cable harness
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