10+ Tata Technologies Design Engineer Interview Questions and Answers

Using petrol in diesel engine and diesel in petrol engine can cause serious damage to the engine.

• Petrol in diesel engine can cause knocking, damage to fuel pump and injectors, and clog the fuel filter.

• Diesel in petrol engine can cause incomplete combustion, damage to spark plugs and catalytic converter, and clog the fuel system.

• It is important to always use the correct fuel for the engine to avoid costly repairs and potential safety hazards.

Design considerations for a part

• Functionality and purpose of the part

• Material selection based on properties and manufacturing process

• Cost-effectiveness and feasibility of production

• Ease of assembly and maintenance

• Environmental impact and sustainability

• Compliance with regulations and standards

• Aesthetics and user experience

Creo environment has various modules for different design tasks.

• Creo Parametric for 3D modeling

• Creo Simulate for simulation and analysis

• Creo Illustrate for technical illustrations

• Creo Schematics for creating electrical schematics

• Creo View for viewing and sharing CAD files

• Creo Direct for direct modeling

• Creo Layout for 2D layout design

• Creo Options Modeler for managing design configurations

Tolerance is the allowable variation in a dimension or property of a product or component.

• Tolerance ensures that a product or component will function properly and fit with other parts

• It helps to control the manufacturing process and reduce costs

• Tolerance can be specified for dimensions, materials, and other properties

• Examples include the tolerance for the diameter of a shaft or the hardness of a metal

• Tolerance can be expressed as a range or a specific value

Principles of fixture designing involve ensuring accuracy, repeatability, accessibility, and safety.

• Design fixtures to hold the workpiece securely and accurately

• Ensure repeatability by designing fixtures that can be easily replicated

• Make fixtures easily accessible for loading and unloading of workpieces

• Ensure safety by designing fixtures that prevent accidents and injuries

• Consider factors such as material selection, cost, and manufacturing processes

• Examples include jigs, clam...read more

Strength of material and sheet metal are basic engineering concepts that deal with the properties and behavior of materials.

• Strength of material involves understanding how materials respond to external forces and stresses, and designing structures that can withstand those forces.

• Sheet metal is a thin, flat metal that is used in a variety of applications, such as in the construction of buildings, automobiles, and appliances.

• Sheet metal fabrication involves cutting, bending, an...read more

Different types of engines have varying functions and comparisons, such as internal combustion engines vs electric motors.

• Internal combustion engines use fuel combustion to generate power, while electric motors use electricity.

• Diesel engines are more fuel efficient than gasoline engines.

• Turbocharged engines provide more power by compressing air before it enters the combustion chamber.

• Hybrid engines combine internal combustion engines with electric motors for improved efficien...read more

Stress is a force that causes deformation in a material. Types include tensile, compressive, shear, and torsional stresses.

• Stress is a force applied to a material that causes it to deform.

• Tensile stress occurs when a material is being pulled apart.

• Compressive stress occurs when a material is being pushed together.

• Shear stress occurs when a material is being pushed in opposite directions.

• Torsional stress occurs when a material is being twisted.

Aerodynamic forces on wing include lift and drag. Types of drag include parasite drag, induced drag, and wave drag.

• Aerodynamic forces on a wing include lift (upward force) and drag (backward force)

• Types of drag include parasite drag (caused by form and skin friction), induced drag (caused by lift), and wave drag (caused by supersonic flight)

• Parasite drag can be reduced by streamlining the aircraft's shape

• Induced drag can be reduced by increasing aspect ratio or using winglets...read more

Types of GD&T symbols include position, concentricity, perpendicularity, parallelism, and more.

• Position

• Concentricity

• Perpendicularity

• Parallelism

• Circularity

• Cylindricity

• Profile of a line

• Profile of a surface

• Symmetry

• Runout

Different types of controls on aircraft include primary flight controls, secondary flight controls, and auxiliary flight controls.

• Primary flight controls: control yoke, pedals, and throttle for pitch, roll, and yaw

• Secondary flight controls: flaps, slats, spoilers for lift and drag

• Auxiliary flight controls: trim tabs, leading edge devices for fine adjustments

Flatness refers to the condition of a surface having no deviations or variations from a perfectly flat plane.

• Flatness is a measure of how closely a surface approaches a perfect plane.

• It is often specified in engineering drawings to ensure proper fit and function of parts.

• Flatness can be measured using tools such as straight edges, surface plates, or coordinate measuring machines.

• Examples of flatness requirements include the surface of a table, a mirror, or a machined part.

Parallelism is the concept of performing multiple tasks simultaneously or in parallel.

• Parallelism can be achieved through multi-threading, multi-processing, or distributed computing.

• It helps in improving performance and efficiency by utilizing available resources effectively.

• Examples include running multiple applications at the same time on a computer, or executing multiple instructions simultaneously in a processor.

Star delta circuits symbols represent the connections used in motor control circuits.

• Star symbol (Y) represents the connection of three windings in a star configuration

• Delta symbol (Δ) represents the connection of three windings in a delta configuration

• The star-delta starter is a common application of these symbols in motor control circuits