Filter interviews by
I applied via Naukri.com and was interviewed in Jun 2020. There were 4 interview rounds.
Java OOPs concepts include inheritance, polymorphism, encapsulation, and abstraction.
Inheritance allows a class to inherit properties and methods from another class.
Polymorphism allows objects to take on multiple forms and behave differently based on the context.
Encapsulation hides the implementation details of a class and only exposes necessary information.
Abstraction focuses on the essential features of an object and...
SQL aggregation functions perform calculations on multiple rows of a single column of a table.
Aggregation functions include COUNT, SUM, AVG, MAX, and MIN.
They are used with the SELECT statement to retrieve data from a table.
Examples: SELECT COUNT(*) FROM customers; SELECT AVG(price) FROM products;
Aggregate functions can also be used with the GROUP BY clause to group data by one or more columns.
Join is a SQL operation that combines rows from two or more tables based on a related column between them.
Join is used to retrieve data from multiple tables in a single query.
Types of join include inner join, left join, right join, and full outer join.
Inner join returns only the matching rows from both tables.
Left join returns all the rows from the left table and matching rows from the right table.
Right join returns al...
Join queries are used to combine data from two or more tables based on a related column.
Use the JOIN keyword followed by the name of the table you want to join.
Specify the columns you want to select from each table.
Use the ON keyword to specify the column(s) that the tables should be joined on.
There are different types of joins: INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN.
Example: SELECT customers.name, orde...
SQL is a programming language used to manage and manipulate relational databases.
SQL stands for Structured Query Language
It is used to create, modify, and query databases
Common commands include SELECT, INSERT, UPDATE, and DELETE
Example: SELECT * FROM customers WHERE age > 18;
A constructor is a special method used to initialize objects in a class.
Constructors have the same name as the class they belong to.
They are called automatically when an object is created.
Constructors can take parameters to set initial values.
They can be overloaded to provide multiple ways of initializing objects.
Class and object are fundamental concepts in object-oriented programming. Method overloading and method overriding are two ways to achieve polymorphism.
A class is a blueprint or template for creating objects that encapsulate data and behavior.
An object is an instance of a class that has its own state and behavior.
Method overloading is when multiple methods in a class have the same name but different parameters.
Method o...
Exception handling is the process of handling errors and unexpected events in a program.
It involves identifying and anticipating potential errors
It provides a mechanism to handle these errors gracefully
It helps prevent program crashes and improves user experience
Examples include try-catch blocks, throw statements, and finally blocks
Multithreading is the ability of a CPU to execute multiple threads concurrently. Wait method is used to pause a thread.
Multithreading allows for better utilization of CPU resources
Wait method is used to pause a thread until a certain condition is met
Other methods like notify and notifyAll can be used to wake up waiting threads
Multithreading can improve performance in applications that require parallel processing
Java pr...
JSP and Servlet are Java technologies used for creating dynamic web pages and handling HTTP requests and responses.
JSP stands for JavaServer Pages and is used for creating dynamic web pages that can interact with server-side data and logic.
Servlet is a Java program that runs on a web server and handles HTTP requests and responses.
JSP and Servlet work together to create dynamic web applications that can generate HTML, p...
SQL subquery is a query within another query used to retrieve data from one or more tables.
Subqueries are enclosed in parentheses and placed within the WHERE or HAVING clause of the outer query.
They can be used to filter, sort, or aggregate data based on the results of the subquery.
Subqueries can also be used in the SELECT statement to retrieve a single value or set of values.
Example: SELECT * FROM employees WHERE depa...
A complex query is a query that involves multiple tables, conditions, and/or functions.
Start by identifying the tables involved in the query
Determine the conditions that need to be met using WHERE clause
Use JOIN to combine tables if necessary
Use aggregate functions like COUNT, SUM, AVG, etc. to perform calculations
Use subqueries to break down complex queries into smaller parts
Test the query and refine as necessary
I applied via Naukri.com and was interviewed before Jan 2021. There were 3 interview rounds.
L.C. of vernier caliper refers to the least count of the instrument.
L.C. is the smallest measurement that can be read on the instrument
It is determined by the number of divisions on the vernier scale compared to the main scale
For example, if the main scale has divisions of 1 mm and the vernier scale has 10 divisions that match up with the main scale, the L.C. would be 0.1 mm
QC tools are used to identify and solve problems in a systematic manner.
Root cause analysis
Fishbone diagram
Pareto chart
Control charts
Statistical process control
I applied via Referral and was interviewed before Nov 2020. There were 3 interview rounds.
PPAP stands for Production Part Approval Process and has 5 levels of submission.
PPAP is a standardized process used in the automotive industry to ensure that suppliers provide parts that meet the customer's requirements.
There are 5 levels of PPAP submission, with each level requiring more documentation and testing than the previous level.
The levels include: Level 1 - Part Submission Warrant (PSW), Level 2 - PSW with pr...
SPC study stands for Statistical Process Control study which is a method of quality control.
SPC study involves monitoring and controlling a process to ensure it operates within set limits.
It uses statistical tools to analyze data and identify trends or patterns in the process.
The goal is to identify and correct any variations or defects in the process before they result in non-conforming products.
Examples of SPC tools ...
MSA study stands for Measurement System Analysis study. It is a statistical method used to determine the variation in measurement data.
MSA study is used to evaluate the measurement system and identify sources of variation.
It helps to determine the accuracy, precision, and stability of the measurement system.
MSA study involves collecting data from the measurement system and analyzing it using statistical tools.
The resul...
Pokayoke is a Japanese term for mistake-proofing or error-proofing.
It is a quality control technique used to prevent errors or defects in a product or process.
It involves designing a system or process in such a way that mistakes are impossible to make or immediately detected and corrected.
Examples include using color-coding, checklists, and sensors to prevent errors.
Pokayoke is commonly used in manufacturing and assemb
I applied via Walk-in and was interviewed before Aug 2020. There were 3 interview rounds.
Sigma Electric Manufacturing Corporation interview questions for popular designations
I applied via Naukri.com and was interviewed in Sep 2020. There was 1 interview round.
Get interview-ready with Top Sigma Electric Manufacturing Corporation Interview Questions
I applied via Campus Placement and was interviewed before Jun 2021. There was 1 interview round.
I applied via Campus Placement and was interviewed before Feb 2021. There were 2 interview rounds.
I applied via campus placement at Rajiv Gandhi Proudyogiki Vishwavidyalaya (RGPV), Bhopal and was interviewed before Mar 2021. There were 2 interview rounds.
I applied via campus placement at Saroj Mohan Institute of Technology, Kolkata and was interviewed before Jul 2020. There were 4 interview rounds.
I applied via Walk-in and was interviewed before Jan 2020. There was 1 interview round.
Top trending discussions
The duration of Sigma Electric Manufacturing Corporation interview process can vary, but typically it takes about less than 2 weeks to complete.
based on 54 interviews
Interview experience
based on 1.2k reviews
Rating in categories
Diploma Trainee Engineer
409
salaries
| ₹1.1 L/yr - ₹2.8 L/yr |
Assistant Engineer
352
salaries
| ₹1.6 L/yr - ₹4.5 L/yr |
Quality Engineer
112
salaries
| ₹1.5 L/yr - ₹4.4 L/yr |
Production Engineer
94
salaries
| ₹1.5 L/yr - ₹4.8 L/yr |
Senior Engineer
86
salaries
| ₹3.6 L/yr - ₹8.9 L/yr |
Precision Camshafts
Bharat Forge
TVS Sundram Fasteners
Samvardhana Motherson Group