100+ Summer Intern Interview Questions and Answers

Developed a predictive model for customer churn using machine learning algorithms

• Used Python libraries like scikit-learn and pandas for data preprocessing and model building

• Performed feature engineering to improve model performance

• Tuned hyperparameters using grid search and cross-validation

• Evaluated model performance using metrics like accuracy, precision, recall, and F1 score

Investment banks provide financial services to corporations, governments, and individuals.

• They help companies raise capital by issuing stocks and bonds.

• They provide advisory services for mergers and acquisitions.

• They facilitate trading of securities in the financial markets.

• They offer research and analysis on various investment opportunities.

• They assist in managing risk and provide hedging strategies.

• They offer wealth management services to high-net-worth individuals.

• They pla...read more

I find the innovation of blockchain technology most interesting.

• Decentralized and secure ledger system

• Eliminates the need for intermediaries

• Applications in finance, supply chain management, and voting systems

• Smart contracts automate processes and reduce costs

• Examples include Bitcoin, Ethereum, and Hyperledger

Yes, I have knowledge of analyzing income statement & balance sheet.

• I have studied financial accounting which covers analyzing income statements and balance sheets.

• I have experience in using financial ratios to analyze the financial health of a company.

• I have completed projects where I analyzed income statements and balance sheets of companies to make investment recommendations.

Implementing technology to grow BigBasket involves optimizing the website and app, implementing data analytics for personalized recommendations, and integrating AI for supply chain management.

• Optimize the website and app for a seamless user experience, faster loading times, and easy navigation.

• Implement data analytics to analyze customer behavior and preferences, providing personalized product recommendations.

• Integrate AI technology for efficient supply chain management, inve...read more

Transmission voltages are in multiples of 11kV due to historical reasons and practical considerations.

• Historically, the standardization of transmission voltages around 11kV was influenced by early power system designs and equipment capabilities.

• Practically, using multiples of 11kV allows for easier voltage transformation and compatibility between different parts of the power grid.

• Higher voltages like 132kV, 220kV, and 400kV are commonly used for long-distance transmission to ...read more

Market research benefits the global industry by providing valuable insights into consumer preferences, market trends, and competitor strategies.

• Helps businesses understand consumer needs and preferences

• Identifies market trends and opportunities for growth

• Assists in developing effective marketing strategies

• Allows companies to stay ahead of competitors

• Reduces risks associated with launching new products or entering new markets

I have learnt AutoCAD Electrical and MATLAB for electrical design and analysis.

• AutoCAD Electrical for designing electrical systems

• MATLAB for analyzing electrical circuits

I am familiar with microcontrollers such as Arduino, Raspberry Pi, and ESP8266.

• Arduino

• Raspberry Pi

• ESP8266

Humidity is the amount of water vapor present in the air, while relative humidity is the ratio of the amount of water vapor present in the air to the maximum amount the air can hold at a specific temperature.

• Humidity is the actual amount of water vapor in the air, while relative humidity is expressed as a percentage.

• Relative humidity changes with temperature, while humidity does not.

• For example, if the air temperature is 20°C and it contains 10g of water vapor, the relative h...read more

SBI is perceived as a reliable and trustworthy bank with a wide reach and diverse range of services.

• SBI is considered one of the largest and oldest banks in India.

• It has a strong presence in both urban and rural areas, making it accessible to a large population.

• The bank offers various financial products and services, including savings accounts, loans, and investment options.

• SBI has a reputation for stability and security, which instills confidence in customers.

• The bank's exte...read more

To increase sales in my area, I would focus on building strong relationships with customers, implementing targeted marketing strategies, and offering promotions.

• Build strong relationships with customers through personalized interactions and follow-ups.

• Implement targeted marketing strategies such as social media advertising and email campaigns.

• Offer promotions and discounts to attract new customers and retain existing ones.

Yes, inheritance can be used in classes used by CSS.

• Inheritance in CSS allows properties to be inherited by child elements from their parent elements.

• This can be achieved using the 'inherit' keyword in CSS.

• For example, if a parent element has a font color of red, child elements can inherit this color unless explicitly overridden.

Big Data refers to large and complex data sets that traditional data processing applications are unable to handle.

• Companies use Big Data to gain insights into customer behavior, market trends, and operational efficiency.

• Big Data is used in various industries such as healthcare, finance, retail, and transportation.

• Companies use tools like Hadoop, Spark, and NoSQL databases to store, process, and analyze Big Data.

• Big Data analytics helps companies make data-driven decisions and...read more

Forging is a manufacturing process where metal is shaped by applying compressive forces using a hammer or press.

• Forging is used to create high-strength components for various industries such as aerospace, automotive, and construction.

• It can be used to produce parts with complex shapes that are difficult to machine.

• Some common applications of forging include crankshafts, connecting rods, gears, and bolts.

• Forging can also improve the mechanical properties of the metal, such as ...read more

The material used in forging process mostly is metal.

• Metal is the most commonly used material in forging process.

• Different types of metals are used depending on the application and requirements.

• Some common metals used in forging include steel, aluminum, titanium, and copper alloys.

• The choice of material depends on factors such as strength, durability, and cost.

• For example, steel is often used for heavy-duty applications, while aluminum is used for lighter weight parts.

• Copper ...read more

Distillation columns used in industries include fractional distillation columns, vacuum distillation columns, and steam distillation columns.

• Fractional distillation columns are used to separate mixtures based on boiling points, commonly used in oil refineries.

• Vacuum distillation columns are used to distill high boiling point compounds at lower temperatures, commonly used in petrochemical industries.

• Steam distillation columns are used for separating heat-sensitive compounds, c...read more

Our oils are different due to our unique extraction technique using cold-pressing method.

• We use cold-pressing method which helps retain more nutrients and antioxidants compared to traditional extraction methods.

• Our oils are extracted at low temperatures to preserve the natural flavors and properties of the ingredients.

• The cold-pressing technique also ensures minimal oxidation and degradation of the oils, resulting in higher quality products.

• For example, our cold-pressed olive...read more

Switchgear refers to electrical equipment used to control, protect, isolate, and switch electrical circuits. Protection involves measures to prevent damage to electrical equipment and ensure safety.

• Switchgear includes devices like circuit breakers, fuses, and disconnect switches.

• Protection involves measures like overcurrent protection, earth fault protection, and differential protection.

• Switchgear and protection are essential in electrical systems to ensure safe and reliable ...read more

Tata has recently launched several vehicles including the Tata Safari, Altroz iTurbo, and Nexon EV.

• Tata Safari is a 7-seater SUV with a 2.0L diesel engine and advanced safety features.

• Altroz iTurbo is a premium hatchback with a 1.2L turbocharged petrol engine and connected car technology.

• Nexon EV is an electric SUV with a range of up to 312 km on a single charge and fast-charging capabilities.

Market research is the process of gathering, analyzing, and interpreting information about a market, including customer preferences, trends, and competitors.

• Identifying target market segments

• Collecting data through surveys, interviews, and focus groups

• Analyzing data to understand customer needs and preferences

• Monitoring competitors and industry trends

• Using findings to make informed business decisions

TTT Curve is a graph that shows the relationship between temperature, time, and transformation of a material.

• TTT stands for Time-Temperature-Transformation.

• It is used to determine the ideal heat treatment for a material.

• The curve is C-shaped because it shows the transformation of a material from one phase to another.

• The curve has three regions: nose, bainite, and pearlite.

• The nose region represents the critical cooling rate for the material to transform into a specific phase....read more

Google is a multinational technology company known for its search engine, advertising platform, and various other products and services.

• Google is known for its innovative products and services such as Google Search, Google Maps, Gmail, and YouTube.

• The company's mission is to organize the world's information and make it universally accessible and useful.

• Google's business model is primarily based on advertising revenue through its AdWords platform.

• The company has a strong focus...read more

Adding petrol in a diesel engine can cause damage to the engine and reduce its efficiency.

• Petrol has lower lubricating properties than diesel, leading to increased wear and tear on engine components.

• Petrol can cause damage to the fuel injection system and fuel pump.

• The engine may misfire or stall due to the different combustion properties of petrol and diesel.

• Running a diesel engine on petrol can result in overheating and potential engine failure.

• It is important to drain the ...read more

There are approximately 50,000 bike owners in the city.

• Estimate based on the number of bike shops and bike lanes in the city

• Consider the population density and the popularity of biking as a mode of transportation

• Survey a sample of the population to get a more accurate estimate

Implement a mobile app for easy and secure daily payments using biometric authentication.

• Develop a mobile app that allows customers to make payments using biometric authentication such as fingerprint or facial recognition.

• Integrate with popular payment gateways like UPI, Paytm, and Google Pay for seamless transactions.

• Provide incentives such as cashback or discounts for using the app to encourage adoption.

• Ensure robust security measures to protect customer data and prevent fr...read more

To overcome regret, one must accept the past, learn from it, and focus on the present and future.

• Acknowledge and accept the past

• Reflect on what could have been done differently

• Learn from past mistakes and use them as lessons for the future

• Focus on the present and future

• Set goals and work towards them

• Practice mindfulness and gratitude

Setting up a factory involves various costs such as land, construction, machinery, labor, utilities, permits, and taxes.

• Land acquisition and preparation

• Construction and building permits

• Machinery and equipment purchase and installation

• Labor costs for hiring and training employees

• Utilities such as electricity, water, and gas

• Permits and licenses for operation

• Taxes and insurance

• Maintenance and repair costs

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects, which can contain data and code.

• OOPs focuses on creating objects that interact with each other to solve problems

• It involves concepts like classes, objects, inheritance, polymorphism, and encapsulation

• Example: In a banking system, you can have classes like Account, Customer, and Transaction, each with their own properties and methods

LSEG is a leading financial markets infrastructure provider with a diverse range of businesses.

• LSEG has a strong reputation in the financial industry

• The company offers a wide range of opportunities for learning and growth

• Working at LSEG provides exposure to a diverse range of businesses and markets

• LSEG is committed to innovation and technology, which aligns with my interests and skills

Strengths: Strong communication skills and ability to work well in a team. Weaknesses: Lack of experience in the industry and tendency to overthink.

• Strength: Excellent verbal and written communication skills, allowing for effective collaboration and clear expression of ideas.

• Strength: Strong team player, able to work well with others and contribute to a positive and productive work environment.

• Weakness: Limited industry experience, but eager to learn and make up for it throug...read more

Generation, transmission, and distribution of electrical system involves producing electricity, sending it through power lines, and delivering it to consumers.

• Generation: Electricity is produced at power plants using various sources such as coal, natural gas, nuclear, hydro, wind, or solar energy.

• Transmission: High voltage electricity is sent over long distances through transmission lines to substations.

• Distribution: Lower voltage electricity is distributed from substations t...read more

AI stands for artificial intelligence, which is the simulation of human intelligence processes by machines.

• AI involves the development of algorithms that can perform tasks typically requiring human intelligence.

• Examples of AI applications include virtual assistants like Siri, self-driving cars, and recommendation systems like Netflix.

• Machine learning is a subset of AI that focuses on the development of algorithms that allow computers to learn from and make predictions or deci...read more

To rotate a matrix's values, transpose the matrix and then reverse each row or column.

• Transpose the matrix by swapping elements across the diagonal

• Reverse each row or column to rotate the matrix

• For clockwise rotation, reverse the rows. For anti-clockwise, reverse the columns

• Example: [[1,2,3],[4,5,6],[7,8,9]] -> [[1,4,7],[2,5,8],[3,6,9]] -> [[7,4,1],[8,5,2],[9,6,3]]

The formula for spring constant is the ratio of the force applied to the displacement it causes.

• The formula for spring constant is given by Hooke's Law: F = kx

• F represents the force applied to the spring

• k is the spring constant

• x is the displacement caused by the force

• The unit of spring constant is N/m (newtons per meter)

Acid-base titration is a chemical concept used to determine the concentration of an unknown acid or base solution.

• Involves the use of an indicator to determine the endpoint of the titration

• The equivalence point is when the moles of acid equal the moles of base

• The pH at the equivalence point depends on the strength of the acid and base being titrated

• Common indicators include phenolphthalein, methyl orange, and bromothymol blue

Yes, pressure affects the boiling point of a substance.

• Pressure and boiling point have an inverse relationship - as pressure increases, boiling point increases and vice versa.

• For example, water boils at a higher temperature in a pressure cooker due to the increased pressure inside.

• Conversely, water boils at a lower temperature at higher altitudes where the atmospheric pressure is lower.

Sorting algorithms are used to arrange elements in a specific order in an array.

• Common sorting algorithms include Bubble Sort, Selection Sort, Insertion Sort, Merge Sort, Quick Sort, and Heap Sort.

• Each algorithm has its own time complexity and best/worst case scenarios.

• For example, Merge Sort has a time complexity of O(n log n) and is efficient for large datasets.

Induction motor works on the principle of electromagnetic induction to produce rotational motion.

• The stator winding produces a rotating magnetic field.

• The rotor winding is short-circuited and the magnetic field induces a current in it.

• The interaction between the magnetic fields produces a torque that drives the rotor.

• The speed of the rotor is slightly less than the speed of the rotating magnetic field.

• Induction motors are widely used in industrial applications due to their si...read more

Lists are mutable while tuples are immutable in Python.

• Lists use square brackets [] while tuples use parentheses ().

• Elements in a list can be added, removed, or modified while elements in a tuple cannot be modified.

• Lists are used for collections of data that need to be modified while tuples are used for collections of data that should not be modified.

• Lists are generally used for homogeneous data while tuples are used for heterogeneous data.

• Example of a list: my_list = [1, 2, ...read more

Designing a distillation column involves determining the required specifications, selecting appropriate materials, and optimizing the column design.

• Determine the desired separation specifications

• Select appropriate materials for the column

• Optimize the column design for efficiency and cost-effectiveness

• Consider factors such as pressure, temperature, and flow rate

• Perform simulations and calculations to ensure optimal performance

• Consider safety and environmental factors

An azeotrope is a mixture of two or more liquids that boils at a constant temperature and has the same composition in vapor and liquid phase.

• Azeotropes cannot be separated by simple distillation.

• Examples include ethanol and water, which form an azeotrope at 95.6% ethanol and 4.4% water.

• Azeotropes are important in chemical engineering and can be used to purify chemicals.

• Azeotropes can be either minimum boiling or maximum boiling.

• In a minimum boiling azeotrope, the boiling poin...read more

Various techniques like X-ray diffraction, scanning electron microscopy, and electrochemical impedance spectroscopy are used for material characterization of lithium ion batteries.

• X-ray diffraction is used to analyze crystal structure and phase composition of electrode materials.

• Scanning electron microscopy provides information on surface morphology and particle size distribution.

• Electrochemical impedance spectroscopy measures the resistance and capacitance of the battery com...read more

I manage pressure by prioritizing tasks, staying organized, seeking support when needed, and practicing self-care.

• Prioritize tasks based on deadlines and importance

• Stay organized by creating to-do lists and setting realistic goals

• Seek support from mentors, colleagues, or supervisors when feeling overwhelmed

• Practice self-care through exercise, meditation, or hobbies to maintain mental well-being

Boiling point is based on the principle of equilibrium between liquid and vapor phases.

• Boiling point is the temperature at which the vapor pressure of a liquid equals the external pressure.

• Higher external pressure leads to a higher boiling point, while lower pressure leads to a lower boiling point.

• Boiling point is affected by factors like intermolecular forces, molecular weight, and atmospheric pressure.

• For example, water boils at 100 degrees Celsius at sea level, but at a lo...read more

A boiler is a closed vessel in which water or other fluid is heated. It is used for heating, power generation, and processing.

• Boilers are commonly used for heating buildings and providing hot water.

• They are also used in power plants to generate electricity.

• Boilers are used in industrial processes such as food processing, chemical production, and textile manufacturing.

• Different types of boilers include fire-tube boilers, water-tube boilers, and electric boilers.

I learn best by actively engaging with the material through hands-on activities, discussions, and visual aids.

• Engage in hands-on activities to apply new information

• Participate in discussions to deepen understanding

• Use visual aids such as diagrams or charts to reinforce learning