200+ Internship Trainee Interview Questions and Answers for Freshers

Yes, I know javascript.

• I have experience in building web applications using javascript.

• I am familiar with popular javascript frameworks like React and Angular.

• I have worked on projects that involve using javascript for front-end and back-end development.

querySelector selects elements using CSS selectors, while getElementWithClass selects elements by class name.

• querySelector uses CSS selectors to select elements, while getElementWithClass selects elements by class name

• querySelector can select elements based on any CSS selector, while getElementWithClass is limited to selecting elements by class name

• querySelector returns the first matching element, while getElementWithClass returns a collection of elements with the specified c...read more

Object oriented programming language is a type of programming language that uses objects and classes to organize code.

• Uses objects and classes to structure code

• Encourages reusability and modularity

• Supports concepts like inheritance, encapsulation, and polymorphism

A granulator is used in industry to break down large materials into smaller particles for easier handling and processing.

• Granulators use cutting blades or hammers to reduce the size of materials.

• They are commonly used in the plastic, pharmaceutical, and chemical industries.

• Granulators can be used to recycle plastic waste by breaking it down into small pellets for reuse.

• They can also be used to reduce the size of pharmaceutical ingredients for easier mixing and processing.

Procurement methods and different stages for harvesting are essential for successful operations.

• Procurement methods include competitive bidding, negotiation, and request for proposals.

• Different stages for harvesting may include planning, planting, cultivation, and harvesting.

• Examples of procurement methods in agriculture include direct purchase from suppliers, contracting with farmers, and participating in auctions.

• Examples of stages for harvesting in agriculture include soil...read more

To delete a column in a database, you can use the ALTER TABLE command.

• Use the ALTER TABLE command followed by the DROP COLUMN keyword and the name of the column you want to delete.

• Make sure to specify the table name where the column exists.

• Example: ALTER TABLE table_name DROP COLUMN column_name;

Tags and elements in HTML are used to structure and format content on a webpage.

• Tags are used to define the structure of content on a webpage.

• Elements are made up of a start tag, content, and an end tag.

• Examples of tags include <p> for paragraphs and <h1> for headings.

Object-oriented programming concepts include encapsulation, inheritance, polymorphism, and abstraction.

• Encapsulation: bundling data and methods that operate on the data into a single unit (class). Example: class Car with properties like color and methods like start() and stop().

• Inheritance: allows a class to inherit properties and methods from another class. Example: class SUV inheriting from class Car.

• Polymorphism: ability of a method to do different things based on the obje...read more

Various losses in a motor include copper losses, iron losses, mechanical losses, and stray losses.

• Copper losses: Resistive losses in the windings due to current flowing through them.

• Iron losses: Energy lost in the core due to hysteresis and eddy currents.

• Mechanical losses: Friction and windage losses in bearings and air resistance.

• Stray losses: Leakage flux losses and losses due to harmonics.

A motor is a device that converts electrical energy into mechanical energy to produce motion.

• Motors work on the principle of electromagnetic induction

• They consist of a rotor and a stator

• Common types of motors include DC motors, AC motors, and stepper motors

Privacy by design is an approach to designing systems that prioritize privacy and data protection from the outset.

• Privacy by design involves considering privacy and data protection at every stage of a system's development

• It involves implementing privacy-enhancing technologies and practices, such as data minimization and user control

• Examples of privacy by design include end-to-end encryption, privacy-preserving data analysis, and privacy impact assessments

• Privacy by design is ...read more

I like words that are concise, impactful, and evoke emotion.

• I prefer words that have a clear and direct meaning

• I enjoy words that have a strong emotional impact on the reader or listener

• I appreciate words that are unique and not commonly used

• Examples of words I like include: serendipity, euphoria, and quintessential

I have worked with microcontrollers such as Arduino, Raspberry Pi, and ESP8266.

• Arduino

• Raspberry Pi

• ESP8266

To keep nature better than today's generation, we must prioritize sustainability, conservation, and education.

• Promote sustainable practices such as recycling, reducing waste, and using renewable energy sources

• Support conservation efforts to protect natural habitats and endangered species

• Educate the younger generation about the importance of preserving nature and the consequences of environmental degradation

Method overloading is when multiple methods have the same name but different parameters, while method overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class.

• Method overloading involves multiple methods with the same name but different parameters.

• Method overriding involves a subclass providing a specific implementation of a method that is already provided by its parent class.

• Method overloading is determined at ...read more

Safety concern in any industry includes hazards, accidents, injuries, and compliance with regulations.

• Identifying and mitigating potential hazards in the workplace

• Ensuring proper training and equipment for employees

• Promoting a culture of safety and reporting near misses

• Complying with safety regulations and standards

• Regular inspections and maintenance of equipment and facilities

Power is transmitted to the engine through a system of belts, gears, and shafts connected to the engine's crankshaft.

• Power is typically transmitted from the engine to the wheels through a transmission system.

• In a manual transmission, power is transmitted through a clutch, gearbox, and driveshaft.

• In an automatic transmission, power is transmitted through a torque converter and planetary gearset.

• Some vehicles use a CVT (continuously variable transmission) to transmit power more...read more

Encapsulation is a concept in object-oriented programming that restricts access to an object's properties and methods.

• Encapsulation helps to protect the data within an object from being modified by external code.

• It also allows for better organization of code and reduces the likelihood of naming conflicts.

• Examples of encapsulation in action include private variables and methods in a class, and getters and setters for accessing and modifying those variables.

• Encapsulation is oft...read more

Data analysis involves examining, cleaning, transforming, and modeling data to discover useful information and make informed decisions.

• Examining data to identify patterns and trends

• Cleaning data by removing errors and inconsistencies

• Transforming data into a usable format for analysis

• Modeling data using statistical techniques or machine learning algorithms

• Discovering insights and making informed decisions based on data analysis

• Example: Analyzing sales data to identify customer...read more

S3 is a scalable storage service provided by AWS. Versioning in S3 allows for multiple versions of an object to be stored.

• S3 is a cloud storage service provided by Amazon Web Services (AWS)

• It allows for scalable storage of data, files, and objects

• Versioning in S3 enables the storage of multiple versions of an object, preventing accidental deletion or overwriting

• Each new version of an object is assigned a unique version ID

Left union and outer union are two types of SQL joins. Left union returns all rows from the left table and matching rows from the right table. Outer union returns all rows from both tables.

• Left union is also known as left join.

• Outer union is also known as full outer join.

• Left union returns all rows from the left table and matching rows from the right table.

• Outer union returns all rows from both tables.

• If there is no match in the right table for a row in the left table, the re...read more

Types of drugs include prescription, over-the-counter, and recreational drugs. Types of tablets include immediate-release, extended-release, and chewable tablets.

• Types of drugs: prescription drugs (e.g. antibiotics), over-the-counter drugs (e.g. pain relievers), recreational drugs (e.g. marijuana)

• Types of tablets: immediate-release tablets (e.g. ibuprofen), extended-release tablets (e.g. metformin), chewable tablets (e.g. antacids)

Total reflux and partial reflux are terms used in distillation processes to describe the flow of liquid and vapor within a column.

• Total reflux occurs when all the condensed liquid is returned to the column as reflux, with no product being withdrawn.

• Partial reflux involves withdrawing some of the liquid product while returning the rest as reflux to the column.

• Total reflux is often used at the beginning of a distillation process to establish equilibrium, while partial reflux is...read more

Operations refer to the processes and activities involved in running a business or organization.

• Operations involve the day-to-day activities of a business or organization.

• They include tasks such as production, logistics, and customer service.

• Efficient operations are essential for the success of a business.

• Operations management involves overseeing and optimizing these processes.

• Examples of operations in different industries include supply chain management in retail, patient ca...read more

Optical fiber is a technology that uses thin strands of glass or plastic to transmit data as pulses of light.

• Optical fibers are made of a core, cladding, and a protective outer layer.

• Light signals are transmitted through the core of the fiber by bouncing off the cladding due to total internal reflection.

• Fiber optic cables can transmit data over long distances with minimal loss of signal strength.

• They are used in telecommunications, internet connections, cable television, and ...read more

The current exchange rate of Indian currency varies daily and can be checked online or through financial news sources.

• The exchange rate of Indian currency is influenced by factors such as market demand, economic indicators, and geopolitical events.

• It is important to check the latest exchange rate before making any international transactions or investments.

• Popular websites like XE, OANDA, and investing.com provide real-time exchange rate information for Indian currency.

Collection framework is a set of interfaces and classes that provide a way to store and manipulate groups of objects in Java.

• Collection framework provides interfaces like List, Set, Queue, etc. for storing and manipulating groups of objects.

• It also provides classes like ArrayList, HashSet, PriorityQueue, etc. that implement these interfaces.

• Collection framework provides algorithms like sorting, searching, shuffling, etc. that can be applied to collections.

• It also provides uti...read more

Surveying is the process of measuring and mapping the physical features of the land.

• Surveying involves the use of various instruments such as theodolites, levels, and total stations.

• It includes techniques such as triangulation, traversing, and leveling.

• Surveying is used in various fields such as construction, engineering, and land development.

• It is important for creating accurate maps, determining property boundaries, and planning infrastructure projects.

Deleting the Kth node in a linked list.

• Traverse the linked list to the Kth node.

• Update the previous node's next pointer to skip the Kth node.

• Free the memory allocated to the Kth node.

• Handle edge cases such as deleting the head or tail node.

I have experience using software such as Microsoft Office Suite, Adobe Creative Suite, and Google Workspace.

• Microsoft Office Suite (Word, Excel, PowerPoint)

• Adobe Creative Suite (Photoshop, Illustrator)

• Google Workspace (Gmail, Drive, Docs)

A selector is a tool used in web development to target specific elements on a webpage. There are different types of selectors like class, ID, tag, attribute, etc.

• Selectors are used in CSS to style specific elements on a webpage

• Types of selectors include class selectors (.class), ID selectors (#id), tag selectors (tag), attribute selectors ([attribute])

• Selectors can also be combined to create more specific targeting, like .class.tag for elements with both class and tag names

To set path in CMD, use the 'set' command followed by the path to the desired directory.

• Open CMD by searching 'cmd' in the start menu

• Use the 'cd' command to navigate to the desired directory

• Use the 'set' command followed by 'PATH=C:\desired\directory' to set the path

PLC stands for Programmable Logic Controller. It is a digital computer used for automation of electromechanical processes.

• PLC is used to control machinery in industries by programming it to perform specific tasks.

• It consists of input and output modules, a central processing unit, and a programming device.

• PLCs are commonly used in manufacturing plants, power stations, and transportation systems.

• They can be programmed using ladder logic, function block diagrams, or structured t...read more

SEO is the process of optimizing a website to rank higher in search engine results. SMO is the process of promoting a website through social media platforms.

• SEO involves optimizing website content, meta tags, and backlinks to improve search engine rankings.

• SMO involves creating and sharing content on social media platforms to increase brand awareness and drive traffic to a website.

• Both SEO and SMO are important for improving online visibility and driving traffic to a website....read more

On-page SEO refers to optimizing individual web pages to rank higher and earn more relevant traffic in search engines. Off-page SEO refers to actions taken outside of your own website to impact your rankings within search engine results pages.

• On-page SEO includes optimizing content, meta tags, headings, images, and URLs on your website

• Off-page SEO includes building backlinks, social media marketing, and influencer outreach

• Examples of on-page SEO: keyword optimization, interna...read more

Print numbers 1 to 10 excluding a specified number

• Use a loop to iterate from 1 to 10

• Check if the current number is the excluded number, if so, skip it

• Print the number if it is not the excluded number

The differential in a train allows the wheels on the same axle to rotate at different speeds, enabling smooth turns.

• The differential is a device that splits torque between the wheels on the same axle.

• It consists of a set of gears that allow the wheels to rotate at different speeds while maintaining power distribution.

• During straight-line motion, the differential allows both wheels to rotate at the same speed.

• When the train turns, the outer wheel covers a longer distance, so t...read more

ArcelorMittal is the world's largest steel producer, operating in over 60 countries and employing over 190,000 people.

• ArcelorMittal was formed in 2006 through the merger of Arcelor and Mittal Steel.

• It is headquartered in Luxembourg and has a significant presence in Europe, the Americas, Asia, and Africa.

• The company produces a wide range of steel products for various industries, including automotive, construction, and packaging.

• ArcelorMittal is known for its commitment to sust...read more

The golden rule of accounting states that debit what comes in and credit what goes out.

• Debit what comes in and credit what goes out

• Helps maintain the balance in accounting equations

• Used to ensure accurate recording of financial transactions

Data structures and algorithms are the building blocks of computer programs.

• Data structures are ways of organizing and storing data in a computer program.

• Algorithms are step-by-step procedures for solving problems using data structures.

• Examples of data structures include arrays, linked lists, and trees.

• Examples of algorithms include sorting, searching, and graph traversal.

• Efficient data structures and algorithms are essential for writing fast and scalable programs.

Shipbuilding is the process of constructing ships, including design, fabrication, and assembly.

• Design phase involves creating blueprints and plans for the ship

• Fabrication phase includes cutting, shaping, and welding metal to build the ship's structure

• Assembly phase involves putting together all the components of the ship, including engines, navigation systems, and interiors

• Quality control is crucial at every stage to ensure safety and durability

• Examples of shipbuilding compan...read more

Find the missing element in an array of strings

• Iterate through the array and check for any missing elements

• Use a hash set to keep track of elements that have been seen

• Compare the elements in the array to a reference array to find the missing element

Static variables in C are variables that retain their values between function calls.

• Static variables are declared using the 'static' keyword.

• They are initialized only once and retain their value throughout the program's execution.

• They have a local scope within the function where they are declared.

• Example: static int count = 0; // retains its value between function calls

Reverse a linked list n times

• Create a function to reverse a linked list

• Loop through the linked list n times and reverse it each time

• Return the final reversed linked list

Print media is chosen based on target audience, budget, and message to be conveyed.

• Identify target audience and their preferred media channels

• Consider budget and cost-effectiveness of different print media options

• Evaluate the message to be conveyed and choose the medium that best suits it

• Examples: newspapers, magazines, brochures, flyers, posters, billboards

Merge overlapping intervals in an array

• Sort the intervals based on their start times

• Iterate through the intervals and merge overlapping ones

• Add the merged intervals to a new array

• Return the new array

Manufacturing involves the production of goods through the use of labor, machines, tools, and chemical or biological processing.

• Manufacturing involves converting raw materials into finished products through various processes.

• It includes activities such as designing, engineering, assembling, and packaging.

• Manufacturing can be done in various industries such as automotive, electronics, pharmaceuticals, and food production.

• Efficiency, quality control, and cost management are key...read more