10+ SK E&C Interview Questions and Answers

Common materials used in electric scooters include aluminum, steel, plastic, and rubber.

• Aluminum: Lightweight and durable, commonly used for scooter frames and components.

• Steel: Provides strength and stability, often used in structural parts like handlebars and forks.

• Plastic: Used for body panels, covers, and other non-structural components.

• Rubber: Found in tires, grips, and suspension components for traction and vibration dampening.

Plastic material grades commonly used in automotive industry.

• Polypropylene (PP)

• Polyethylene (PE)

• Acrylonitrile Butadiene Styrene (ABS)

• Polyamide (PA)

• Polycarbonate (PC)

Stress-strain curve of elastic materials shows relationship between applied stress and resulting strain.

• The curve typically consists of linear elastic region, yield point, plastic deformation, and ultimate failure.

• Elastic materials return to their original shape after stress is removed within the linear region.

• Yield point marks the transition from elastic to plastic deformation.

• Plastic deformation is permanent and leads to structural changes in the material.

• Ultimate failure o...read more

Various types of transmission systems used in two-wheelers include manual, automatic, semi-automatic, and CVT.

• Manual transmission: Requires the rider to manually shift gears using a clutch and gear lever.

• Automatic transmission: Shifts gears automatically without the need for manual intervention.

• Semi-automatic transmission: Allows the rider to manually shift gears without using a clutch.

• CVT (Continuously Variable Transmission): Offers seamless gear ratio changes for smooth acc...read more

Quality criteria for 2D and 3D meshing include element shape, aspect ratio, skewness, and element size.

• Element shape should be close to regular shapes like triangles or quadrilaterals for 2D meshing and tetrahedra or hexahedra for 3D meshing.

• Aspect ratio should be close to 1 for both 2D and 3D meshing to avoid distorted elements.

• Skewness should be minimized to ensure better accuracy in simulation results.

• Element size should be appropriate for capturing the geometry details an...read more

Sealing refers to the process of making a device or component watertight or airtight.

• Sealing is important in electromechanical engineering to protect sensitive components from moisture, dust, and other contaminants.

• IP67 is a rating that indicates the level of protection against solids and liquids. The 'IP' stands for 'Ingress Protection' and the '67' indicates that the device is completely protected against dust and can withstand being submerged in water up to a depth of 1 me...read more

A pointer is a variable that stores the memory address of another variable.

• Pointers are used to indirectly access and manipulate data in memory.

• They are commonly used in programming languages like C and C++.

• Example: int *ptr; // declares a pointer to an integer variable

Pointers are used in programming to store memory addresses of variables.

• Pointers can be used to dynamically allocate memory

• Pointers can be used to pass variables by reference

• Pointers can be used to create linked lists

A bit field is a data structure used in computer programming to store multiple boolean values compactly in a single variable.

• A bit field allows individual bits within a byte, word, or other data structure to be accessed and manipulated.

• It is often used to optimize memory usage by packing multiple boolean values into a single variable.

• For example, a struct representing a set of flags can be defined using a bit field to save memory.

Structure refers to the arrangement and organization of components in a system or object.

• Structure defines how different parts of a system or object are connected and interact with each other.

• It can refer to physical structures like buildings, bridges, or machines, as well as abstract structures like data structures in programming.

• Structures can be hierarchical, networked, or linear, depending on the relationships between components.

• Examples include the skeletal structure of ...read more

Analysis to do involves examining data, identifying patterns, and drawing conclusions.

• Collect and organize relevant data

• Identify patterns or trends in the data

• Use statistical tools for analysis

• Draw conclusions based on the analysis

• Document findings and recommendations