Product Engineer
100+ Product Engineer Interview Questions and Answers
Q51. What is friction and explain it?
Friction is the force that resists the relative motion or tendency of such motion of two surfaces in contact.
Friction is caused by the roughness of surfaces in contact.
It acts in the opposite direction of the applied force.
Friction can be static (no motion), kinetic (motion), or rolling.
Examples include rubbing hands together to create heat due to friction and the stopping of a moving car due to friction between the tires and the road.
Q52. decrypting the given string
The question is about decrypting a given string.
Ask for more information about the encryption method used
Check if there are any clues or hints provided
Try different decryption techniques such as substitution, transposition, or symmetric/asymmetric encryption
Use online tools or libraries to assist with decryption
Q53. Technical experience Analysis of DBSync
DBSync is a data integration platform that synchronizes data between various applications and databases.
DBSync supports integration with popular applications like Salesforce, QuickBooks, and Microsoft Dynamics.
It offers real-time and batch synchronization options.
DBSync provides a user-friendly interface for mapping fields and configuring data flows.
It also offers advanced features like data transformation, filtering, and error handling.
DBSync is a cloud-based platform that c...read more
Q54. Query to find student with second highest marks
Query to find second highest marks of a student
Sort the marks in descending order
Select the second highest mark
Join with student table to get student details
Q55. Approach on Google Maps Optimisation
Optimizing Google Maps involves improving location accuracy, user experience, and search rankings.
Ensure accurate business information (name, address, phone number) on Google My Business
Utilize relevant keywords in business descriptions and categories
Encourage positive reviews and respond to feedback promptly
Use high-quality images and videos to enhance listing
Implement local SEO strategies to improve search rankings
Q56. Which material manufacturing
The choice of material manufacturing depends on the product's requirements and specifications.
Consider the product's mechanical, thermal, and chemical properties
Evaluate the cost and availability of the materials
Choose a material that can be easily processed and manufactured
Examples of materials include metals, plastics, ceramics, and composites
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Q57. How can improve product quality
Improving product quality involves implementing quality control measures, gathering customer feedback, and continuous testing and refinement.
Implementing quality control measures such as regular inspections and audits
Gathering customer feedback to identify areas for improvement
Continuous testing and refinement of the product to ensure it meets quality standards
Investing in employee training to improve skills and knowledge
Utilizing advanced technology and tools to enhance prod...read more
Q58. Difference between java and c++
Java is an object-oriented programming language while C++ is a general-purpose programming language.
Java is platform-independent while C++ is platform-dependent.
Java has automatic garbage collection while C++ requires manual memory management.
Java has a simpler syntax compared to C++.
Java has a built-in support for multithreading while C++ requires external libraries.
C++ allows for low-level memory manipulation while Java does not.
Java has a larger standard library compared t...read more
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Q59. What is Bearing and its types?
Bearings are components that allow for smooth rotation or movement between two parts.
Bearings reduce friction between moving parts
Types of bearings include ball bearings, roller bearings, and plain bearings
Ball bearings use balls to reduce friction, roller bearings use cylinders, and plain bearings have a sliding surface
Q60. AWS services used in my previous project
In my previous project, I used AWS services such as EC2, S3, and RDS for hosting, storage, and database management.
EC2 for hosting application servers
S3 for storing and retrieving files
RDS for managing relational databases
Q61. write the logic for printing Fibonacci series
The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
Initialize variables for the first two numbers in the series (0 and 1)
Use a loop to calculate the next number by adding the previous two numbers
Repeat the process until reaching the desired length of the series
Q62. What is ackermann steering mechanism
Ackermann steering mechanism is a type of steering system used in vehicles to improve turning radius and reduce tire wear.
It involves the use of a steering linkage that connects the front wheels at different angles.
The inner wheel turns at a sharper angle than the outer wheel during a turn.
This mechanism is commonly used in cars, trucks, and other vehicles.
It helps to reduce tire wear and improve handling and stability during turns.
Q63. Making drawings in AutoCAD software
AutoCAD is a software used for making technical drawings and designs.
AutoCAD is a computer-aided design (CAD) software used for creating 2D and 3D drawings.
It is widely used in engineering, architecture, and construction industries.
AutoCAD allows users to create precise and accurate drawings with various tools and features.
Users can also add annotations, dimensions, and text to their drawings.
AutoCAD supports various file formats and can be used for collaboration and sharing ...read more
Q64. What you mean by turning
Turning refers to the process of rotating a workpiece on a lathe to shape it into a desired form.
Turning is a machining process used to create cylindrical parts.
It involves rotating a workpiece on a lathe while a cutting tool removes material from the surface.
Turning can be used to create a variety of shapes, including grooves, threads, and tapers.
Examples of turned parts include shafts, bolts, and bearings.
Q65. intro your self steel vs Aluminum newton 1st law
I am a Product Engineer with expertise in materials like steel and aluminum, and knowledge of Newton's 1st law.
Steel is stronger and more durable than aluminum, but aluminum is lighter and more corrosion-resistant.
Steel is commonly used in structural applications like buildings and bridges, while aluminum is often used in aerospace and automotive industries.
Newton's 1st law states that an object at rest will stay at rest, and an object in motion will stay in motion unless act...read more
Q66. Different between petrol and diesel
Petrol and diesel are both fuels used in internal combustion engines, but they have different properties and compositions.
Petrol is a lighter fuel compared to diesel.
Petrol has a lower energy density than diesel.
Diesel engines are more fuel-efficient than petrol engines.
Petrol engines generally have higher RPM (revolutions per minute) compared to diesel engines.
Petrol is more volatile and evaporates faster than diesel.
Petrol is more commonly used in cars and motorcycles, whil...read more
Q67. Give an example for recursive function
A recursive function is a function that calls itself within its definition.
A classic example of a recursive function is the factorial function, where n! = n * (n-1)!
Another example is the Fibonacci sequence, where each number is the sum of the two preceding ones.
Q68. Why code in java
Java is a popular language for its platform independence, object-oriented programming, and vast community support.
Java is platform-independent, meaning it can run on any operating system without modification.
Java is object-oriented, allowing for modular and reusable code.
Java has a vast community of developers and libraries, making it easy to find solutions to problems.
Java is used in a variety of applications, including web development, mobile app development, and enterprise...read more
Q69. Debug the Errors in the given program
The program has errors that need to be debugged
Check for syntax errors such as missing semicolons or parentheses
Look for logical errors in the code that may be causing unexpected behavior
Use debugging tools like print statements or a debugger to track down the issue
Q70. Error fixing in the given program
To fix errors in a program, identify the root cause, debug the code, test the fix, and ensure it doesn't introduce new issues.
Identify the specific error message or behavior causing the issue.
Review the code to understand the logic and flow.
Use debugging tools like breakpoints, print statements, or logging to pinpoint the issue.
Make necessary code changes to address the error.
Test the fix thoroughly to ensure it resolves the issue without introducing new bugs.
Q71. Why String is immutable ?
String is immutable in Java because it enhances security, thread safety, and performance.
Immutable strings are thread-safe as they cannot be modified by multiple threads simultaneously.
Immutable strings help in caching and reusing string literals, improving performance.
Immutable strings prevent malicious attacks like SQL injection by ensuring data integrity.
Example: String str = "Hello"; str.concat(" World"); // This does not modify the original string.
Q72. What are cin and cout?
cin and cout are standard input and output streams in C++ used for reading input and printing output respectively.
cin is used for reading input from the user
cout is used for printing output to the console
Example: cin >> x; cout << x;
Q73. Explain IOT in layman terms
IOT is a network of physical devices that are connected and can communicate with each other to perform tasks.
IOT stands for Internet of Things
It involves connecting everyday devices to the internet
These devices can communicate with each other and with us
Examples include smart homes, wearable technology, and industrial sensors
Q74. Any relocation problem
Relocation is not a problem for me.
I am open to relocating for the right opportunity.
I have experience relocating for previous jobs and have successfully adapted to new environments.
I am flexible and willing to adjust to new locations and cultures.
I understand the challenges that come with relocation and have a plan in place to handle them.
I have researched the potential relocation area and am excited about the opportunities it offers.
Q75. how to generate dynamic form
Dynamic forms can be generated using JavaScript frameworks like React or Angular.
Use state management to dynamically render form fields based on user input.
Utilize conditional rendering to show/hide form elements as needed.
Implement form validation to ensure data integrity.
Consider using libraries like Formik or Redux Form for easier form management.
Q76. Tell about seals and types
Seals are mechanical devices used to prevent leakage between two surfaces. There are various types of seals based on their design and application.
Types of seals include mechanical seals, hydraulic seals, O-rings, lip seals, and gaskets.
Mechanical seals are commonly used in pumps and compressors to prevent leakage.
Hydraulic seals are used in hydraulic systems to prevent fluid leakage and maintain pressure.
O-rings are circular seals used in a wide range of applications due to t...read more
Q77. What is useEffect in react.
useEffect is a hook in React that allows you to perform side effects in function components.
useEffect is used to perform side effects in function components.
It runs after every render by default.
You can specify dependencies to control when the effect runs.
Common use cases include data fetching, subscriptions, and DOM manipulation.
Q78. what si Redux in react
Redux is a predictable state container for JavaScript apps.
Redux is a state management tool commonly used with React.
It helps manage the state of an application in a predictable way.
Redux stores the entire state of the application in a single immutable object.
Actions are dispatched to update the state, and reducers specify how the state changes in response to actions.
Q79. High level design of search engine
A search engine is a software system that is designed to search for information on the World Wide Web.
Crawling: Search engines use web crawlers to discover and index web pages.
Indexing: The search engine creates an index of the content it finds during crawling.
Ranking: Algorithms are used to determine the relevance of web pages to a user's query.
User Interface: A search engine provides a user-friendly interface for users to enter their search queries.
Query Processing: The sea...read more
Q80. What is APQP?
APQP stands for Advanced Product Quality Planning. It is a structured approach to product development and quality management.
APQP is a process used in manufacturing industries to ensure that new products meet customer requirements and are launched successfully.
It involves cross-functional teams working together to identify potential risks and develop plans to mitigate them.
APQP includes five phases: planning and defining, product design and development, process design and dev...read more
Q81. what is c programming
C programming is a high-level programming language used for system programming, embedded systems, and software development.
C programming is widely used for developing operating systems, compilers, and device drivers.
It allows direct access to memory and hardware, making it efficient for low-level programming.
C programs are portable and can be easily optimized for performance.
Example: Writing a simple 'Hello World' program in C.
Q82. production increase with run manpower
Increasing production requires more manpower.
Adding more workers can increase output.
Efficient use of manpower is important.
Automation can also increase production without adding manpower.
Training and development of workers can improve productivity.
Balancing manpower and production targets is crucial.
Q83. Describe JTAG functionality
JTAG (Joint Test Action Group) is a standard for testing and debugging electronic devices.
JTAG allows for testing and debugging of integrated circuits on a PCB
It provides a way to access and control the pins of a device for testing purposes
JTAG can be used for boundary scan testing to check for faults in PCB connections
It is commonly used in manufacturing and development of electronic devices
Q84. Describe Setup, hold time
Setup time and hold time are timing constraints in digital circuits to ensure proper operation of flip-flops.
Setup time is the minimum amount of time data must be stable before the clock edge for proper capture.
Hold time is the minimum amount of time data must be stable after the clock edge for proper capture.
Violating setup time can lead to metastability issues.
Violating hold time can lead to data corruption.
Example: If setup time is 5ns and hold time is 2ns, data must be st...read more
Q85. Least count of vernier
The least count of a vernier scale is the smallest measurement that can be read on the scale.
The least count is determined by the number of divisions on the main scale and the vernier scale.
It is calculated as the difference between one main scale division and one vernier scale division.
For example, if the main scale has divisions of 1 mm and the vernier scale has 10 divisions between two main scale divisions, the least count would be 0.1 mm.
Q86. Tube layout of heat exchanger
Tube layout of heat exchanger refers to the arrangement of tubes within the heat exchanger to optimize heat transfer.
Tube layout should be designed to maximize heat transfer efficiency
Consider factors such as fluid flow, pressure drop, and fouling when determining tube layout
Common tube layouts include straight, U-shaped, and helical configurations
Computer simulations can help optimize tube layout for specific heat exchanger designs
Q87. What is a queue
A queue is a data structure that follows the First In First Out (FIFO) principle, where elements are added at the rear and removed from the front.
Elements are added to the rear of the queue and removed from the front
Common operations include enqueue (add to rear) and dequeue (remove from front)
Examples of queues include waiting lines at a grocery store or a printer queue
Q88. What is a stack
A stack is a data structure that follows the Last In, First Out (LIFO) principle.
Elements are added and removed from the top of the stack.
Common operations include push (add element) and pop (remove element).
Examples of stacks include the call stack in programming and the undo feature in text editors.
Q89. what is linkedlist
A linked list is a data structure that consists of nodes where each node contains a data field and a reference to the next node in the sequence.
Consists of nodes connected by pointers
Each node contains data and a reference to the next node
Allows for dynamic size and efficient insertion/deletion
Q90. House Robber DSA Problem
House Robber DSA Problem involves finding the maximum amount of money you can rob without alerting the police.
Create a DP array to store the maximum amount of money that can be robbed at each house.
At each house, decide whether to rob the current house or skip it based on the maximum amount robbed from previous houses.
Return the maximum amount of money that can be robbed without alerting the police.
Q91. Mirror Tree DSA Problem
Mirror Tree DSA Problem involves creating a mirror image of a binary tree.
Create a mirror image of a binary tree by swapping left and right child nodes recursively.
Use a recursive approach to traverse the tree and swap the child nodes.
Ensure to handle edge cases like null nodes or single child nodes.
Q92. What is oops , SQL
OOPs stands for Object-Oriented Programming and SQL stands for Structured Query Language.
OOPs is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
SQL is a domain-specific language used in programming and designed for managing data held in a relational database management system.
OOPs promotes reusability, flexibility, and modularity in programming.
SQL allows users to retrieve, manipulate, an...read more
Q93. what is array in c
An array in C is a collection of elements of the same data type stored in contiguous memory locations.
Arrays are declared by specifying the data type of the elements and the number of elements in square brackets, e.g. int arr[5];
Elements in an array can be accessed using their index, starting from 0, e.g. arr[0] refers to the first element.
Arrays in C are zero-indexed, meaning the first element is at index 0.
Arrays can be of any data type, including arrays of strings like cha...read more
Q94. What is reactjs
ReactJS is a JavaScript library for building user interfaces.
Declarative: React makes it easy to create interactive UIs.
Component-Based: UIs are broken down into reusable components.
Virtual DOM: React uses a virtual DOM for better performance.
One-Way Data Binding: Data flows in one direction, making it easier to manage state.
JSX: React uses JSX, a syntax extension that allows mixing HTML with JavaScript.
Q95. What is virtual DOM
Virtual DOM is a lightweight copy of the actual DOM in memory, used for efficient updating of the real DOM.
Virtual DOM is a concept used in frameworks like React to improve performance by minimizing actual DOM manipulations.
When changes are made to the virtual DOM, a diffing algorithm is used to identify the minimal changes needed in the real DOM.
This approach reduces the number of updates to the actual DOM, resulting in faster rendering and improved user experience.
Q96. Hackathon of two parts
Hackathon is a competitive event where teams work on projects within a limited time frame.
Teams collaborate to solve a specific problem or create a new product
Participants showcase their technical skills and creativity
Judges evaluate projects based on innovation, functionality, and presentation
Q97. Assembly new ideas?
As a Product Engineer, I am constantly assembling new ideas to improve products and processes.
I actively seek out new ideas and perspectives from various sources.
I collaborate with cross-functional teams to brainstorm and evaluate ideas.
I conduct research and analysis to assess the feasibility and potential impact of new ideas.
I prototype and test new concepts to validate their effectiveness.
I iterate and refine ideas based on feedback and data-driven insights.
I document and ...read more
Q98. Projects and Tech Stacks used
I have worked on various projects using tech stacks such as Java, Spring Boot, Angular, and MySQL.
Developed a web application using Java and Spring Boot for backend development
Implemented front-end using Angular framework for user interface
Utilized MySQL for database management
Collaborated with cross-functional teams to deliver high-quality products
Q99. Joins in sql
Joins in SQL are used to combine data from two or more tables based on a related column.
Joins are used to retrieve data from multiple tables.
There are different types of joins such as inner join, left join, right join, and full outer join.
The join condition is specified using the ON keyword.
Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;
Q100. python string reversal
Reversing a string in Python using slicing
Use string slicing with a step of -1 to reverse the string
Example: 'hello'[::-1] will return 'olleh'
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