S.D.Engineers Design Engineer Interview Questions and Answers

Normal . Keep calm stay focused. Study hard work smart.
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Q1. Nicely done... friendly Tell me about yourself
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Q2. Where are you from ?
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Heat transfer , mass transfer flued mechanics

Q1. My introduction and asked my job
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Q1. Chemical branch
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Q1. Chemical subject
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Q1. Communication any other thing
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Math, science any other

It was a good easy level test and prior preparation is importanat

Q1. Why do you choose our company? Tell me ur key skills that match the role?
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Q2. Take me into your resume? Why ABCD?
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Q1. Fiber ko kitne digri me kata jata h
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Q2. Agar fiber ko bend kare to power loss hogi ya nahi
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Q1. Optical power kitni rhni chaiye ik ache network ke liye
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Q1. What is pid controller
Ans. 
PID controller is a feedback control mechanism used in engineering to regulate a system's output.
• PID stands for Proportional-Integral-Derivative

• It continuously calculates an error value as the difference between a desired setpoint and a measured process variable

• It uses three control terms to adjust the output and bring the error to zero

• It is widely used in industries such as manufacturing, robotics, and automation

• Examp...read more
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Q2. What is plc and how it works
Ans. 
PLC stands for Programmable Logic Controller. It is a digital computer used for automation of electromechanical processes.
• PLC is used to control industrial processes such as assembly lines, robotic devices, and packaging systems.

• It uses a programmable memory to store instructions and execute them in a sequential manner.

• PLC can communicate with other devices such as sensors, actuators, and human-machine interfaces.

• It is...read more
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3 questions, 1 group the anagram in the given string , 2. Generate the Fibonacci series 3. Sort the string based on length.

Q1. Java memory management for heap and stack, what is the use of string pool, java 8 features, multi threading sample program, explain one design pattern with example
Ans. 
Java memory management, string pool, Java 8 features, multi threading, design patterns
• Java memory management involves managing memory allocation for heap and stack. Heap is used for storing objects and is managed by garbage collector. Stack is used for method calls and local variables.

• String pool is a special area in heap memory where String literals are stored to optimize memory usage. Strings with same values are sto...read more
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Q2. Why spring framework, app concept, spring security jwt, design food ordering api
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Q3. How SQL index works internally, SQL execution order
Ans. 
SQL indexes are data structures that improve the speed of data retrieval operations by providing quick access to rows in a table.
• SQL indexes are created on columns in a table to speed up SELECT queries.

• When a query is executed, the SQL engine first checks if there is an index on the columns involved in the query.

• If an index is present, the SQL engine uses it to quickly locate the rows that satisfy the query conditions.

• ...read more
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