Tata Group Production Engineer Interview Questions and Answers

Q1. About interview is production engineer
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Q2. About interview is production supervisor
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60 mins of aptitude test

60 mins of coding round

Q1. OOPs concepts explanation with example
Ans. 
OOPs concepts revolve around classes, objects, inheritance, polymorphism, and encapsulation.
• Classes are blueprints for objects, defining their properties and behaviors.

• Objects are instances of classes, representing real-world entities.

• Inheritance allows a class to inherit properties and methods from another class.

• Polymorphism enables objects to be treated as instances of their parent class.

• Encapsulation restricts acces...read more
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Q2. About the projects we created in 2nd and 4th year of our academic
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Q1. Tell me about your self
Ans. 
I am a dedicated and experienced Production Engineer with a strong background in manufacturing processes and quality control.
• Bachelor's degree in Mechanical Engineering

• 5+ years of experience in production engineering

• Proficient in CAD software and manufacturing processes

• Implemented lean manufacturing principles to improve efficiency

• Led cross-functional teams to troubleshoot production issues
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Q2. Tell me what you know about Unix and SQL
Ans. 
Unix is a powerful operating system known for its multitasking and multi-user capabilities, while SQL is a language used for managing and querying databases.
• Unix is an operating system developed in the 1970s known for its command-line interface and flexibility.

• SQL (Structured Query Language) is a language used to communicate with databases to retrieve, update, and manage data.

• Unix commands are case-sensitive and often ...read more
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Q1. What is mutex and it's syntax?
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A mutex is a synchronization primitive used to control access to shared resources in a multi-threaded environment.
• Mutex is typically used to protect critical sections of code to prevent race conditions.

• Syntax for using mutex in C++: std::mutex myMutex;

• To lock a mutex: myMutex.lock();

• To unlock a mutex: myMutex.unlock();
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Q2. What is a goroutine and how it's used?
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A goroutine is a lightweight thread managed by the Go runtime. It allows concurrent execution of functions.
• Goroutines are created using the 'go' keyword followed by a function call.

• They are used for concurrent programming in Go, allowing multiple functions to run simultaneously.

• Goroutines are more efficient than traditional threads as they have lower memory overhead and can be multiplexed onto fewer OS threads.

• Example:...read more
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DSA, Queries and logical coding

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About current project and roles and resposibilities etc

Q1. SQL COMPLEX QUERIES and PL SQL, CRON JOBS, SERVICE NOW
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Q2. What are difference between SQL and PL SQL
Ans. 
SQL is a standard language for managing relational databases, while PL/SQL is a procedural language extension for SQL.
• SQL is a standard language for querying and manipulating data in relational databases.

• PL/SQL is a procedural language extension for SQL, allowing for more complex programming logic.

• SQL is used for data manipulation and retrieval, while PL/SQL is used for writing stored procedures and functions.

• SQL state...read more
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Q3. Explain types of joins?
Ans. 
Types of joins are used in databases to combine rows from two or more tables based on a related column between them.
• Inner Join: Returns rows when there is at least one match in both tables.

• Left Join (or Left Outer Join): Returns all rows from the left table and the matched rows from the right table.

• Right Join (or Right Outer Join): Returns all rows from the right table and the matched rows from the left table.

• Full Join...read more
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Q4. Diffence between correlated and non correlated subquary?
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Correlated subquery refers to a subquery that is dependent on the outer query, while non-correlated subquery can be executed independently.
• Correlated subquery is executed for each row processed by the outer query, while non-correlated subquery is executed only once.

• Correlated subquery is slower in performance compared to non-correlated subquery.

• Example: SELECT * FROM table1 WHERE column1 = (SELECT MAX(column2) FROM tab
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Q5. Find departement wise total sal?
Ans. 
To find department wise total salary, sum up the salaries of employees in each department.
• Group employees by department

• Calculate total salary for each department

• Display department wise total salary
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I got 60 min test with basic Q of shell script and python

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