20+ Aastha Telecom Interview Questions and Answers

The decision between sheetmetal bracket or casting is based on factors like complexity, strength, cost, and production volume.

• Consider the complexity of the part - sheetmetal brackets are generally simpler to design and manufacture compared to castings.

• Evaluate the required strength and load-bearing capacity - castings are often preferred for heavy-duty applications due to their superior strength.

• Assess the cost implications - sheetmetal brackets are usually more cost-effecti...read more

Creo is a powerful tool for sheet metal and casting part 3D modelling and detailing.

• Creo offers a range of tools for sheet metal design, including flanges, bends, and punches.

• For casting parts, Creo allows for the creation of complex geometries and the ability to simulate casting processes.

• Creo also offers advanced detailing capabilities, including the ability to create 2D drawings and annotations.

• Users can easily switch between sheet metal and casting modes within Creo to op...read more

Modelling and detailing of large sheet metal involves creating 3D models and producing detailed drawings for manufacturing.

• Use CAD software to create accurate 3D models of sheet metal components

• Consider material thickness, bend radii, and tolerances in the design

• Apply appropriate sheet metal forming techniques such as bending, punching, and welding

• Generate detailed drawings with dimensions, tolerances, and annotations for manufacturing

• Ensure proper nesting and efficient mater...read more

Material selection is crucial for design engineering. Currently using aluminum for its lightweight and corrosion resistance.

• Consider mechanical properties like strength, stiffness, and ductility when selecting materials

• Think about environmental factors such as temperature, moisture, and chemicals

• Aluminum is commonly used for its lightweight nature, corrosion resistance, and ease of machining

GD&T is used on drawings to ensure clear communication of design intent and to specify tolerances for manufacturing.

• GD&T allows for precise and consistent communication of design requirements

• It ensures that parts are manufactured to the correct dimensions and tolerances

• It reduces the need for multiple iterations and revisions during the manufacturing process

• Examples of GD&T symbols include position, concentricity, and perpendicularity

Degree of freedom refers to the number of independent variables that can be varied in a system.

• Degree of freedom is the number of ways a system can move without violating any constraints.

• It is the number of independent parameters required to define the position or configuration of a system.

• For example, a ball in space has six degrees of freedom - three for position and three for orientation.

• In mechanical engineering, degree of freedom is used to determine the number of actuat...read more

Circularity refers to the overall roundness of a feature, while runout refers to the amount of wobble or variation in a feature's position relative to a reference axis.

• Circularity is a 2D tolerance that controls the overall roundness of a feature, ensuring it is within a specified circular boundary.

• Runout is a 3D tolerance that measures the amount of wobble or variation in a feature's position relative to a reference axis.

• Circularity is typically used for features like holes ...read more

GD&T stands for Geometric Dimensioning and Tolerancing. It is a system for defining and communicating engineering tolerances.

• GD&T is used to specify the allowable variations in form, size, and orientation of part features.

• It helps improve the quality of engineering drawings by providing a clear and concise way to communicate design requirements.

• GD&T is essential for ensuring parts fit together properly and function as intended.

• Examples of GD&T symbols include position, concen...read more

DFMEA stands for Design Failure Mode and Effects Analysis, a systematic approach to identifying and preventing potential failures in a product design.

• Identify potential failure modes in the design

• Determine the effects of each failure mode on the system

• Assign a severity ranking to each failure mode

• Identify potential causes of each failure mode

• Assign a probability ranking to each cause

• Determine the ability to detect each failure mode before it occurs

• Calculate the Risk Priority ...read more

Design an L bracket with 2 mounting holes.

• Start by determining the dimensions of the L bracket (length, width, thickness)

• Decide on the placement of the 2 mounting holes (size, distance from edges)

• Consider the material for the bracket (steel, aluminum, etc.)

• Ensure the bracket is sturdy and can support the intended load

• Create a detailed CAD drawing of the L bracket design

There are 14 symbols in GD&T.

• There are 14 geometric symbols in GD&T, each representing a specific control on a part's dimensions and tolerances.

• Some common symbols include position, concentricity, perpendicularity, and parallelism.

• GD&T symbols are used to communicate engineering tolerances and requirements on technical drawings.

• Understanding and correctly interpreting GD&T symbols is crucial for ensuring the proper manufacturing and assembly of parts.

GD&T symbols are used to communicate design requirements and tolerances on engineering drawings.

• GD&T stands for Geometric Dimensioning and Tolerancing

• Symbols are used to specify the shape, size, orientation, and location of features on a part

• Examples of symbols include concentricity, perpendicularity, and position

• GD&T ensures that parts are manufactured to the correct specifications and fit together properly

Torque is a measure of rotational force. Torque values for hoses and fittings in clean room activities can be derived through testing and calculation.

• Torque is the measure of the force that causes an object to rotate around an axis.

• It is calculated by multiplying the force applied to an object by the distance from the axis of rotation.

• Torque values for hoses and fittings in clean room activities can be determined through testing and calculation.

• Testing involves applying a kno...read more

I have experience creating detailed models using CAD tools such as SolidWorks and AutoCAD.

• Proficient in using CAD tools like SolidWorks and AutoCAD

• Experience in creating detailed models for various projects

• Ability to interpret technical drawings and specifications

Tool design involves creating and developing tools and equipment used in manufacturing processes.

• Tool design focuses on creating efficient and effective tools for specific manufacturing processes.

• It involves understanding the requirements of the manufacturing process and designing tools to meet those needs.

• Tool design also includes considerations for material selection, ergonomics, and cost-effectiveness.

• Examples of tools designed include jigs, fixtures, cutting tools, and mo...read more

FMEA stands for Failure Modes and Effects Analysis, a systematic method for identifying and preventing potential failures in a process or product.

• FMEA is a proactive risk assessment tool used to identify and prioritize potential failure modes in a system, process, or product.

• It involves analyzing the potential effects of each failure mode, the likelihood of their occurrence, and the ability to detect and prevent them.

• FMEA helps in improving the reliability, safety, and qualit...read more

The torque formula with coefficient of friction (cof) is a mathematical equation used to calculate the torque required to overcome friction in a mechanical system.

• Torque is a measure of the rotational force applied to an object.

• The torque formula with cof is given by: Torque = Coefficient of Friction * Normal Force * Radius

• The coefficient of friction represents the amount of friction between two surfaces in contact.

• The normal force is the force exerted by an object perpendicu...read more

Visual aids such as diagrams, charts, and images are used in process documents to enhance understanding and clarity.

• Visual aids help to simplify complex processes and make them easier to comprehend.

• Diagrams can be used to illustrate the flow of a process or the relationship between different steps.

• Charts can be used to present data or metrics related to the process.

• Images can be used to provide visual examples or references for specific steps or components.

• Visual aids can be ...read more

VLOOKUP and HLOOKUP are Excel functions used to search for a value in a table and return a corresponding value.

• VLOOKUP stands for vertical lookup and searches for a value in the first column of a table and returns a value in the same row from a specified column.

• HLOOKUP stands for horizontal lookup and searches for a value in the first row of a table and returns a value in the same column from a specified row.

• Both functions are commonly used in Excel for data analysis and mani...read more