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STAR O & M Interview Questions and Answers

Updated 31 Oct 2023

STAR O & M Interview Experiences

Popular Designations

2 interviews found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Walk-in and was interviewed in Oct 2023. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - HR 

(3 Questions)

  • Q1. Coal handling plant operations related questions
  • Q2. DCS , SCADA , PLC, QUESTION AND WORKING PROCESS
  • Q3. Chemical plant related questions blowers oil gas

Interview Preparation Tips

Interview preparation tips for other job seekers - Only 1st round HR interview and second round net surfing issue

Shift Incharge Engineer Interview Questions asked at other Companies

Q1. 1) What do you know about the compressor ? 2) How Many different types of compressors are their ? 3) what do you mean by double acting compressors ? 4) what do you know about the siemens energy ?
View answer (1)

CHP Operator Interview Questions & Answers

user image Anonymous

posted on 29 Oct 2022

I applied via Naukri.com

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(2 Questions)

  • Q1. What is a turbine and what is it's function
  • Ans. 

    A turbine is a machine that converts the energy from a fluid flow into useful work.

    • Turbines are commonly used in power generation, aviation, and marine propulsion.

    • They consist of blades or vanes that rotate when exposed to a fluid flow, such as steam or water.

    • The rotation of the blades drives a shaft, which can be connected to a generator or other machinery.

    • Turbines can be classified based on their design, such as impu...

  • Answered by AI
  • Q2. Turbine is one which converts the mechanical energy into electrical energy

Interview Preparation Tips

Interview preparation tips for other job seekers - Wherever you are working, be sure to have complete information about it.

CHP Operator Interview Questions asked at other Companies

Q1. What is a turbine and what is it's function
View answer (1)

Interview questions from similar companies

I was interviewed in Aug 2017.

Interview Questionnaire 

4 Questions

  • Q1. Difference between c and java?
  • Ans. 

    C is a procedural programming language while Java is an object-oriented programming language.

    • C is a low-level language while Java is a high-level language.

    • C requires manual memory management while Java has automatic memory management.

    • C is platform-dependent while Java is platform-independent.

    • C supports pointers while Java does not.

    • C has a simpler syntax compared to Java.

  • Answered by AI
  • Q2. Difference between final, finally and finalize
  • Ans. 

    final, finally, and finalize are keywords in Java with different meanings.

    • final is a keyword used to declare a constant value, a variable that cannot be modified.

    • finally is a block used in exception handling to ensure a piece of code is always executed, whether an exception is thrown or not.

    • finalize is a method in the Object class that is called by the garbage collector before an object is destroyed.

    • final and finally a...

  • Answered by AI
  • Q3. About yourself
  • Q4. Why Johnson
  • Ans. 

    Johnson is a reputable company known for its innovative software solutions and collaborative work environment.

    • Johnson has a strong reputation in the industry for delivering high-quality software solutions.

    • The company values collaboration and teamwork, which aligns with my own work style.

    • I admire Johnson's commitment to innovation and staying ahead of technological advancements.

  • Answered by AI

Interview Preparation Tips

Round: Apptitude Test
Experience: Questions was unpredictable as it was from reasoning,verbal , and from general knowledge also.Technical questions was also there.
Tips: Technical question was not that hard. Just have good basic knowledge of programming and DBMS

Round: Technical Interview
Experience: It was from basic concepts only.

Round: HR Interview
Experience: There were 12 HRs to take my interview but asked mainly from CV only.

Tips: Be calm and confident and learn the basic of subjects

College Name: BPPIMT

Skills evaluated in this interview

Consultant Interview Questions & Answers

Siemens user image Ujjwal Mukherjee

posted on 12 Dec 2015

I applied via Referral

Interview Questionnaire 

1 Question

  • Q1. What are the factors you would consider when building a plant? (Case Type- General business acumen)

Interview Preparation Tips

Round: Case Study Interview
Experience: Recommended Approach
Broke it into financial and non-financial and said ROI seems to be the best metric in financial. Went ahead after getting her buy-in and looked at various cost components in detail like labor, overheads etc. Throughout the interview, I was asked to go deeper and even when I was asked to move horizontally to other cost components, there was no closure of an issue. In the end, was just asked to summarize whatever we had done so far with 2 concluding statements

PI questions
Totally work and CV related cross questioning Why did you do this ELP and what did you learn Why SMC now This was a kind of stress interview where questions would start before I finished my answer. The same tone carried on in the case where scoping questions were frowned upon
Tips: What was good: Cool under pressure, confident What could be better: Take the hint if the interviewer is not giving data and lay out a structure and then ask questions explaining their relevance

Skills:
College Name: Indian School Of Business (ISB)

Consultant Interview Questions & Answers

Siemens user image Ujjwal Mukherjee

posted on 11 Dec 2015

I applied via Referral

Interview Questionnaire 

1 Question

  • Q1. You as a consultant have made a mistake and need to go back to your client’s CFO who is not co-operative and the final presentation is due tomorrow to the board
  • Ans. 

    Consultant must approach the CFO calmly, explain the mistake, offer solutions, and emphasize the importance of their cooperation for the success of the project.

    • Approach the CFO calmly and professionally

    • Explain the mistake honestly and take responsibility

    • Offer solutions to rectify the mistake and ensure it does not happen again

    • Emphasize the importance of the CFO's cooperation for the success of the project

    • Request for an...

  • Answered by AI

Interview Preparation Tips

Round: Case Study Interview
Experience: Recommended Approach
Depends on the interviewer and his discussion

PI questions
About yourself
Something that is not on your resume
Example of Learning from an achievement
Example of Learning from your work experience and what could you have don
Tips: What was good: PI, Patience to go on during the role play What could be better: I got caught up in the role play when he gave excuses not to cooperate

Skills:
College Name: Indian School Of Business (ISB)

Consultant Interview Questions & Answers

Siemens user image Ujjwal Mukherjee

posted on 12 Dec 2015

I applied via Referral

Interview Questionnaire 

1 Question

  • Q1. He gave me a slide which had 50 potential projects and asked me how I would choose.(Case Type-Cost-benefit)

Interview Preparation Tips

Round: Case Study Interview
Experience: Recommended Approach
Started with a Cost – Benefit – Risk and was asked to mainly consider capability building under major costs
Was given numbers for 2-3 projects and the case ended after straightforward calculations

PI questions
Talk about a personality trait that has evolved over time
An example of personal and professional success and cross questions on that In hindsight what could you have done better at work
Tips: What was good: PI, Calculations accuracy What could be better: I was given feedback to engage the interviewer more so that I could start with a more refined structure instead of a conventional structure

Skills:
College Name: Indian School Of Business (ISB)

Consultant Interview Questions & Answers

Siemens user image Ujjwal Mukherjee

posted on 11 Dec 2015

I applied via Referral

Interview Questionnaire 

1 Question

  • Q1. He gave me a slide which had 50 potential projects and asked me how I would choose.(Case Type :-Cost-benefit)

Interview Preparation Tips

Round: Case Study Interview
Experience: Started with a Cost – Benefit – Risk and was asked to mainly consider capability building under major costs Was given numbers for 2-3 projects and the case ended after straightforward calculations
Tips: What was good: PI, Calculations accuracy What could be better: I was given feedback to engage the interviewer more so that I could start with a more refined structure instead of a conventional structure

Skills:
College Name: Indian School Of Business (ISB)

Consultant Interview Questions & Answers

Siemens user image Ujjwal Mukherjee

posted on 12 Dec 2015

I applied via Referral

Interview Questionnaire 

1 Question

  • Q1. A windmill manufacturer in Scandinavia wants to expand but has no labor pool for recruitment and is constrained by it. (Case Type- Expansion / Growth)
  • Ans. 

    The windmill manufacturer in Scandinavia is facing labor pool shortage and needs to expand.

    • The manufacturer can consider outsourcing labor from other countries.

    • They can also invest in training programs to develop local talent.

    • The manufacturer can offer incentives to attract skilled workers to relocate.

    • They can also consider automating some of their processes to reduce the need for labor.

    • The manufacturer can partner wit...

  • Answered by AI

Interview Preparation Tips

Round: Case Study Interview
Experience: Broke it into attracting required labor at the site or outsourcing Within outsourcing talked about factors by which I would identify countries for this task.
In the end was just asked to recommend 2 industries from where I could use skills of existing engineers and I came up with other power generation industries and aerospace for blade design
Tips: What was good: PI, Involving the interviewer in case discussion What could be better: Quicker solution of case, he gave me a lot of hints and nudges for the solution After the final interview, I was also asked to rank each performance to check self-awareness. Overall, SMC checks a lot on cultural awareness, fit in their culture and personality traits.


Skills:
College Name: Indian School Of Business (ISB)

I applied via Approached by Company and was interviewed in Aug 2017. There were 5 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Basic Java questions. Coding based on technical topics in Java. Approach and knowledge of other technology apart from core strength like ui ,design .
  • Q2. Scenario based questions. Deeper into Java and related technologies
  • Q3. Again based on Java and project but kind of client interview
  • Q4. Basic hr questions and salary discussion

Interview Preparation Tips

Round: Managerial
Experience: More of past projects and team handling

General Tips: Be prepared for basics in related technology and good through understanding in one core area.
Skills: Communication, Problem Solving, Analytical Skills, Decision Making Skills
Duration: 1-3 Months

I was interviewed before Mar 2021.

Round 1 - Face to Face 

(7 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

This round started with some questions from Programmable Logic Controllers or PLC followed by some basic questions from Intel 8051 Microcontroller.

  • Q1. What are the general functions of a Programmable Logic Controller (PLC)?
  • Ans. 

    PLCs are used to control machinery and automate processes in industrial settings.

    • Monitoring inputs from sensors

    • Executing control algorithms

    • Communicating with other devices

    • Logging data for analysis

    • Implementing safety functions

    • Examples: controlling a conveyor belt, regulating temperature in a furnace

  • Answered by AI
  • Q2. Can you describe the basic elements in Ladder logic programming?
  • Ans. 

    Ladder logic programming is a graphical programming language used for PLCs, with basic elements like contacts, coils, timers, and counters.

    • Ladder logic consists of rungs, which are made up of inputs (contacts) and outputs (coils).

    • Contacts represent conditions that must be met for the output to be energized.

    • Coils are outputs that are energized when the conditions of the contacts are met.

    • Timers and counters are used to c...

  • Answered by AI
  • Q3. What are the different types of PLC inputs and outputs?
  • Ans. 

    PLC inputs and outputs include digital inputs, digital outputs, analog inputs, and analog outputs.

    • Digital inputs: used for receiving binary signals (on/off, high/low). Examples: push buttons, limit switches.

    • Digital outputs: used for sending binary signals. Examples: relays, solenoids.

    • Analog inputs: used for receiving continuous signals. Examples: temperature sensors, pressure transducers.

    • Analog outputs: used for sendin...

  • Answered by AI
  • Q4. What are the advantages and disadvantages of the S7 controller?
  • Ans. 

    The S7 controller offers high performance and flexibility but can be complex to program and expensive.

    • Advantages: high performance, flexibility, scalability

    • Disadvantages: complexity in programming, expensive

    • Example: S7-1200 offers fast processing speeds and can be easily expanded with additional modules

    • Example: Programming for S7 controllers may require specialized training and expertise

  • Answered by AI
  • Q5. Can you explain the time stamp available in the S7-200 PLC?
  • Ans. 

    The time stamp in S7-200 PLC is used to record the time when a specific event occurs.

    • Time stamp is a feature in S7-200 PLC that records the time when a specific event happens.

    • It helps in tracking the sequence of events and troubleshooting issues.

    • Time stamp can be used to monitor the performance of the PLC system.

    • Example: A time stamp can be recorded when a sensor detects a change in temperature.

    • Example: Time stamp can ...

  • Answered by AI
  • Q6. Could you explain Jnc in the context of microcontrollers?
  • Ans. 

    Jnc stands for Jump and Call in the context of microcontrollers.

    • Jnc is an instruction used in microcontrollers to jump to a specified address if the carry flag is not set.

    • It is commonly used in conditional branching operations in microcontroller programming.

    • For example, in 8051 microcontroller assembly language, the instruction JNC label will jump to the specified label if the carry flag is not set.

  • Answered by AI
  • Q7. What are the types of interrupts in the Intel 8051 microcontroller?
  • Ans. 

    The types of interrupts in the Intel 8051 microcontroller include external hardware interrupts, timer interrupts, and serial communication interrupts.

    • External hardware interrupts are triggered by external devices connected to the microcontroller.

    • Timer interrupts are generated by the internal timers of the microcontroller.

    • Serial communication interrupts occur when data is received or transmitted through the serial port.

    • ...

  • Answered by AI
Round 2 - Face to Face 

(6 Questions)

Round duration - 50 Minutes
Round difficulty - Medium

This round was heavily inclined towards Operating System and Computer Networks and the interviewer asked questions revolving around the fundamentals of the subject.

  • Q1. What is a bootstrap program in an operating system?
  • Ans. 

    A bootstrap program is a small program that initializes the operating system on a computer.

    • Bootstrap program is stored in ROM or EEPROM and is executed when the computer is powered on.

    • It loads the operating system kernel into memory and starts its execution.

    • Bootstrap program is responsible for setting up the initial state of the operating system.

    • Examples include BIOS (Basic Input/Output System) in PCs and UEFI (Unified

  • Answered by AI
  • Q2. Can you explain demand paging?
  • Ans. 

    Demand paging is a memory management scheme where pages are only brought into memory when they are demanded by the program.

    • Pages are loaded into memory only when needed

    • Helps in reducing the amount of physical memory required

    • Improves overall system performance by allowing more processes to run simultaneously

    • Commonly used in virtual memory systems

  • Answered by AI
  • Q3. Can you explain any 5 essential UNIX commands?
  • Ans. 

    Five essential UNIX commands are ls, cd, pwd, mkdir, and rm.

    • ls - list directory contents

    • cd - change directory

    • pwd - print working directory

    • mkdir - make directory

    • rm - remove files or directories

  • Answered by AI
  • Q4. What are the different types of VPN?
  • Ans. 

    Different types of VPN include remote access VPN, site-to-site VPN, and client-to-site VPN.

    • Remote access VPN allows individual users to connect to a private network from a remote location.

    • Site-to-site VPN connects entire networks together over the internet.

    • Client-to-site VPN allows individual devices to connect to a private network.

    • Examples include OpenVPN, IPsec, and SSL VPN.

  • Answered by AI
  • Q5. Can you describe the OSI Reference Model?
  • Ans. 

    The OSI Reference Model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.

    • The OSI Reference Model stands for Open Systems Interconnection Reference Model.

    • It consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

    • Each layer has specific functions and communicates with the adjacent layers for data trans...

  • Answered by AI
  • Q6. Can you explain the TCP and UDP protocols?
  • Ans. 

    TCP is a connection-oriented protocol that ensures reliable data delivery, while UDP is a connectionless protocol that focuses on speed.

    • TCP stands for Transmission Control Protocol and is used for reliable data transmission.

    • TCP establishes a connection between sender and receiver before data transfer.

    • TCP uses sequencing and acknowledgment to ensure data integrity.

    • UDP stands for User Datagram Protocol and is used for fa...

  • Answered by AI
Round 3 - HR 

(1 Question)

Round duration - 30 Minutes
Round difficulty - Easy

This is a cultural fitment testing round .HR was very frank and asked standard questions. Then we discussed about my
role.

  • Q1. What is something about you that is not included in your resume?

Interview Preparation Tips

Eligibility criteriaAbove 1 years of experienceSiemens interview preparation:Topics to prepare for the interview - Operating Systems, Computer Architecture, Microcontollers and Microprocessors, Computer Networks, AptitudeTime required to prepare for the interview - 3 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

STAR O & M Interview FAQs

How many rounds are there in STAR O & M interview?
STAR O & M interview process usually has 2 rounds. The most common rounds in the STAR O & M interview process are Resume Shortlist, Technical and HR.
What are the top questions asked in STAR O & M interview?

Some of the top questions asked at the STAR O & M interview -

  1. What is a turbine and what is it's funct...read more
  2. Turbine is one which converts the mechanical energy into electrical ene...read more
  3. DCS , SCADA , PLC, QUESTION AND WORKING PROC...read more

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STAR O & M Interview Process

based on 3 interviews

Interview experience

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Excellent
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