UNESCO Interview Questions and Answers

Q1. What is GD AND T
Ans. 
GD&T stands for Geometric Dimensioning and Tolerancing, a system for defining and communicating engineering tolerances.
• GD&T is a symbolic language used on engineering drawings to specify the allowable variations in form, size, and orientation of features.

• It helps ensure that parts fit together properly and function as intended.

• GD&T uses symbols such as concentricity, flatness, perpendicularity, and position to communic...read more
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Q2. What is surface finish symbol means
Ans. 
Surface finish symbol indicates the type of surface treatment required on a part for manufacturing purposes.
• Surface finish symbols are typically found on engineering drawings to specify the type of finish needed on a part.

• The symbol consists of a horizontal line with various geometric shapes and numbers that indicate the required finish.

• Examples of surface finish symbols include Ra for roughness average, Rz for maximum...read more
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Q1. How do you see you in five years
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Q2. What is your best strength
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Q1. Mechanical aptitude
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Q2. Explain on flushing & cavitation
Ans. 
Flushing is the process of cleaning out a system by forcing fluid through it, while cavitation is the formation of vapor bubbles in a liquid due to rapid changes in pressure.
• Flushing involves using a fluid to remove contaminants or debris from a system, such as a hydraulic system or a pipeline.

• Cavitation occurs when the pressure in a liquid drops below its vapor pressure, causing bubbles to form and collapse, leading t...read more
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Q3. Explain on different materials & their grades
Ans. 
Materials come in different grades based on their composition, properties, and intended use.
• Materials can be classified into metals, polymers, ceramics, and composites.

• Each material type has different grades based on factors like strength, durability, conductivity, and corrosion resistance.

• Examples include steel grades like 304, 316, and 430, polymer grades like HDPE and PVC, and ceramic grades like alumina and zirconi
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Q4. Stress vs strain on mild steel & different materials
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Stress is the force applied to a material, while strain is the resulting deformation. Mild steel has a linear stress-strain curve.
• Stress is the force applied to a material per unit area, measured in N/m^2 or Pascals.

• Strain is the resulting deformation of the material, measured as a ratio of the change in length to the original length.

• Mild steel typically has a linear stress-strain curve until it reaches its yield point...read more
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Q1. Introduction of yourself
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Q2. Daily work routine & Responsibility
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Q3. Technical questions regarding Job profile
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Includes 60 questions more focus on technical questions

Q1. GDNT symbols description
Ans. 
GD&T symbols are used in engineering drawings to specify the geometric characteristics of a part.
• GD&T stands for Geometric Dimensioning and Tolerancing

• Symbols include perpendicularity, concentricity, flatness, etc.

• Used to communicate design requirements accurately

• Ensures parts are manufactured to the correct dimensions and tolerances
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Q2. Manufacturing processes
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Q3. Resume based question
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Q4. Questions on Internship
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Q1. Personal information
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Q2. Future plans and education plans
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Q3. Family background
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Q1. Are you willing to work hard
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Q2. Are a work in rotational shifts
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Q1. About forgeing process
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Q2. Self introduction
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Q3. About final year project
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Q4. About the experience before worked company
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Q5. General questions
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Q1. 1) Introduction, your work in current company.
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Q2. What is DFMEA,DFMA etc.?
Ans. 
DFMEA stands for Design Failure Mode and Effects Analysis, while DFMA stands for Design for Manufacturability and Assembly.
• DFMEA is a systematic approach to identifying and preventing potential failure modes in a design.

• DFMEA involves analyzing each component of a design to determine potential failure modes, their effects, and the likelihood of occurrence.

• DFMA focuses on designing products that are easy to manufacture ...read more
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Q3. What are design Procedures?
Ans. 
Design procedures are systematic steps followed to create a product or system.
• Design procedures involve defining requirements and constraints.

• They include brainstorming, concept development, prototyping, testing, and refining.

• Documentation of the design process is essential for future reference.

• Examples include the design procedures followed in creating a new software application or a mechanical device.
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Q4. What have you done for your company?
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Q1. They gave assembly .We have to design &Draft it
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