Project Intern/Trainee Interview Questions and Answers

Stack

• Stack is a data structure that follows the Last In First Out (LIFO) principle.

• Elements are added and removed from the same end, known as the top of the stack.

• Common operations include push (add element), pop (remove element), and peek (access top element).

Call by value passes a copy of the value, while call by reference passes the memory address of the value.

• Call by value creates a new copy of the value being passed.

• Call by reference allows the called function to modify the original value.

• In call by value, changes made to the parameter inside the function do not affect the original value.

• In call by reference, changes made to the parameter inside the function affect the original value.

• Call by value is used when the original val...read more

The main components of a CNC machine include a controller, motors, spindle, tooling, and a worktable.

• Controller: The brain of the CNC machine that interprets the instructions and controls the movement of the machine.

• Motors: Stepper or servo motors that drive the movement of the machine axes.

• Spindle: The rotating component that holds the cutting tool and performs the cutting or shaping operations.

• Tooling: Various cutting tools, such as end mills or drills, used for different m...read more

NO

• Functional programming in Java involves using functions as first-class citizens

• It emphasizes immutability and avoids side effects

• Java 8 introduced functional programming features like lambda expressions and streams

Object-oriented programming focuses on objects and their interactions, while procedural programming focuses on procedures and functions.

• In object-oriented programming, data and functions are encapsulated within objects, promoting code reusability and modularity.

• Procedural programming follows a step-by-step approach, where functions are called in a specific order to achieve a desired outcome.

• Object-oriented programming allows for the creation of complex systems by modeling rea...read more

Servo motors provide precise control and continuous rotation, while stepper motors offer accurate positioning and high torque.

• Servo motors are commonly used in robotics and automation systems to control the position, speed, and acceleration of mechanical components.

• Stepper motors are often used in 3D printers, CNC machines, and robotics for precise positioning and control.

• Servo motors have a limited range of motion, typically 180 degrees, while stepper motors can rotate conti...read more

Injection molding is a manufacturing process used to produce parts by injecting molten material into a mold.

• Molten material is injected into a mold cavity under high pressure.

• The material cools and solidifies, taking the shape of the mold cavity.

• Common materials used in injection molding include plastics, metals, and glass.

• The process is widely used in various industries, such as automotive, electronics, and consumer goods.

• Injection molding allows for the production of comple...read more

Atos is a global leader in digital transformation and offers a wide range of opportunities for career growth and development.

• Atos is a renowned global company with a strong presence in the digital transformation industry.

• They provide innovative solutions and services to clients across various sectors.

• Atos offers a diverse range of projects and opportunities for learning and development.

• The company values its employees and fosters a collaborative and inclusive work culture.

• Ato...read more