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Sona Comstar Furnace Operator Interview Questions and Answers

Updated 2 Feb 2025

Sona Comstar Furnace Operator Interview Experiences

1 interview found

Interview experience
1
Bad
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected
Round 1 - Technical 

(1 Question)

  • Q1. What is Thermo calpal
  • Ans. 

    Thermo calpal is a type of refractory material used in furnaces to withstand high temperatures.

    • Thermo calpal is a heat-resistant material used in furnace linings.

    • It is designed to withstand extreme temperatures and thermal shock.

    • Thermo calpal helps to maintain the structural integrity of the furnace during operation.

  • Answered by AI

Interview questions from similar companies

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

I applied via Approached by Company and was interviewed in Dec 2023. There was 1 interview round.

Round 1 - Group Discussion 

About past experience

I applied via Recruitment Consultant and was interviewed in Feb 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Gd&t, drawing reading, Cmm programming, cmm operating,

Interview Preparation Tips

Interview preparation tips for other job seekers - Good interview

I applied via Campus Placement and was interviewed before Apr 2021. There were 2 interview rounds.

Round 1 - Aptitude Test 

Journal knowledge of plastic raw material and their defect

Round 2 - HR 

(5 Questions)

  • Q1. Why should we hire you?
  • Q2. Why are you looking for a change?
  • Q3. Where do you see yourself in 5 years?
  • Q4. What are your strengths and weaknesses?
  • Q5. Tell me about yourself.

Interview Preparation Tips

Interview preparation tips for other job seekers - Energetic person give a chance of work Motherson company
Round 1 - Technical 

(3 Questions)

  • Q1. What is ic engine About wire harness
  • Ans. 

    IC engine stands for Internal Combustion Engine which converts fuel into mechanical energy.

    • IC engine is used in automobiles, generators, and other machinery.

    • It works by burning fuel inside a combustion chamber to create high-pressure gases that move a piston.

    • There are two types of IC engines: spark-ignition (petrol) and compression-ignition (diesel).

    • IC engines require a wire harness to connect various electrical compon...

  • Answered by AI
  • Q2. What is petrol engine
  • Ans. 

    A petrol engine is an internal combustion engine that uses petrol as fuel to power the vehicle.

    • Petrol engines are commonly used in cars, motorcycles, and small aircraft.

    • They work by igniting a mixture of petrol and air in a combustion chamber, which creates a small explosion that pushes a piston.

    • This motion is transferred to the crankshaft, which turns the wheels of the vehicle.

    • Petrol engines are known for their high p...

  • Answered by AI
  • Q3. What is an automobile
  • Ans. 

    An automobile is a motor vehicle designed for transportation on roads.

    • It typically has four wheels and is powered by an internal combustion engine or electric motor.

    • Automobiles come in various types such as sedans, SUVs, trucks, and vans.

    • They are used for personal transportation, commercial transportation, and racing.

    • Examples of popular automobile brands include Toyota, Ford, BMW, and Tesla.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - IC engine, thermodynamic , personalty test , flywheel ,Governor, Crank shaft
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Recruitment Consulltant and was interviewed before Oct 2022. There were 3 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 

(2 Questions)

  • Q1. Where are you living?
  • Q2. Why are you leaving your last company?
Round 3 - Technical 

(4 Questions)

  • Q1. Circuit diagram of relay holding.
  • Ans. 

    A relay holding circuit diagram is used to keep the relay in the energized state even after the control signal is removed.

    • The circuit typically includes a holding contact that maintains the relay coil energized.

    • A latching relay can also be used for holding without continuous power supply.

    • Examples: ladder logic diagram with a holding contact, latching relay circuit diagram.

  • Answered by AI
  • Q2. What is PNP and NPN
  • Ans. 

    PNP and NPN are types of bipolar junction transistors commonly used in electronic circuits.

    • PNP transistor has a layer of N-type semiconductor between two layers of P-type semiconductor, while NPN transistor has a layer of P-type semiconductor between two layers of N-type semiconductor.

    • In a PNP transistor, current flows from the emitter to the base and then to the collector, while in an NPN transistor, current flows fro...

  • Answered by AI
  • Q3. How many type of sensor?
  • Ans. 

    There are various types of sensors used for different purposes.

    • Temperature sensors (e.g. thermocouples, thermistors)

    • Pressure sensors (e.g. piezoelectric sensors)

    • Motion sensors (e.g. accelerometers, gyroscopes)

    • Proximity sensors (e.g. ultrasonic sensors)

    • Light sensors (e.g. photodiodes, phototransistors)

  • Answered by AI
  • Q4. What is PLC and full form?
  • Ans. 

    PLC stands for Programmable Logic Controller, which is a digital computer used for automation of electromechanical processes.

    • PLC is used to control machinery in manufacturing processes, such as assembly lines, robotic devices, or any activity that requires high reliability control.

    • It is programmed using a specialized computer language, typically ladder logic or function block diagram.

    • PLCs are commonly used in industrie...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Your rlc circuit must be very strong.

Skills evaluated in this interview

I applied via Walk-in and was interviewed in Mar 2022. 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 - Aptitude Test 

Interview Preparation Tips

Interview preparation tips for other job seekers - 2year experience in production department

I applied via Company Website

Round 1 - Technical 

(6 Questions)

  • Q1. What is mean of TTR & why required for powder coating process ?
  • Ans. 

    TTR stands for Total Thickness Range and is required for powder coating process to ensure proper adhesion and durability.

    • TTR is the range of thickness of the substrate and any coatings applied to it

    • It is important for powder coating as it ensures proper adhesion and durability

    • If the TTR is too large, the coating may not adhere properly or may crack and peel over time

    • Examples of substrates with varying TTR include alumi

  • Answered by AI
  • Q2. What is mean of detection & prevention pokayoke?
  • Ans. 

    Detection and prevention poka-yoke refers to the use of techniques to identify and prevent errors in a process.

    • Poka-yoke is a Japanese term for mistake-proofing

    • Detection poka-yoke involves identifying errors as they occur

    • Prevention poka-yoke involves designing processes to prevent errors from occurring

    • Examples of poka-yoke include using checklists, color-coding, and physical barriers

    • Poka-yoke can improve quality, reduc

  • Answered by AI
  • Q3. Which condition PH decrease in conversion coating?
  • Ans. 

    Decrease in pH can occur due to various factors in conversion coating.

    • Decrease in pH can be caused by the addition of an acid or acidic solution.

    • Presence of reactive metals in the coating can lead to a decrease in pH.

    • Contamination by organic materials or impurities can also lower the pH.

    • Chemical reactions during the conversion coating process may result in pH decrease.

    • Examples of conversion coatings include phosphating

  • Answered by AI
  • Q4. How to prepared 0.1 N H2so4 & Naoh ?
  • Ans. 

    To prepare 0.1 N H2SO4 & NaOH, calculate the required amount of solute and dissolve it in distilled water.

    • Calculate the molar mass of H2SO4 and NaOH

    • Determine the required amount of solute using the formula: N = (W/M) x (1000/V)

    • Dissolve the calculated amount of solute in distilled water to make 1 liter of solution

    • Standardize the solution using a primary standard

    • Use a burette to measure the volume of solution needed for

  • Answered by AI
  • Q5. How to cross verify 0.1 normality H2so4?
  • Ans. 

    To cross verify 0.1 normality H2SO4, use a standard solution of NaOH and an indicator.

    • Prepare a standard solution of NaOH of known concentration.

    • Add a few drops of an indicator such as phenolphthalein to the H2SO4 solution.

    • Titrate the H2SO4 solution with the NaOH solution until the endpoint is reached.

    • The endpoint is when the indicator changes color, indicating that all the H2SO4 has reacted with the NaOH.

    • Calculate the...

  • Answered by AI
  • Q6. How to prepared ph buffer solution as per defined standard in tablet?
  • Ans. 

    Prepare a pH buffer solution as per defined standard in tablet.

    • Determine the required pH value and buffer capacity

    • Select the appropriate buffer system and calculate the required amounts of buffer components

    • Dissolve the buffer components in water and adjust the pH as necessary

    • Check the pH and adjust if necessary

    • Filter the solution and store in a clean container

    • Use a calibrated pH meter to verify the pH of the solution

  • Answered by AI
Round 2 - Assignment 

Interview Preparation Tips

Interview preparation tips for other job seekers - As for as my view is concern best performance maintaining in plant
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Referral and was interviewed before Nov 2023. There was 1 interview round.

Round 1 - One-on-one 

(2 Questions)

  • Q1. How to submit form in powerapps
  • Ans. 

    To submit a form in PowerApps, use the SubmitForm function.

    • Use the SubmitForm function to submit the form data.

    • You can trigger the SubmitForm function on a button click or any other event.

    • Make sure to handle any validation or error messages before submitting the form.

  • Answered by AI
  • Q2. What is different between SP 2013 and Sharepoint online
  • Ans. 

    SharePoint 2013 is an on-premises version while SharePoint Online is cloud-based.

    • SharePoint 2013 requires on-premises infrastructure, while SharePoint Online is cloud-based.

    • SharePoint 2013 requires manual updates and maintenance, while SharePoint Online is automatically updated by Microsoft.

    • SharePoint 2013 has a one-time licensing fee, while SharePoint Online is subscription-based.

    • SharePoint 2013 has limited storage ca...

  • Answered by AI

Skills evaluated in this interview

Interview Questionnaire 

8 Questions

  • Q1. Tell me about yourself
  • Ans. 

    I am a highly motivated and organized individual with a passion for leadership and team building.

    • I have several years of experience in management roles, including overseeing teams of up to 20 employees.

    • I am skilled in project management, budgeting, and strategic planning.

    • I have a proven track record of improving team performance and achieving business goals.

    • I am a strong communicator and enjoy collaborating with others...

  • Answered by AI
  • Q2. Describe the work that you did in FSAE club
  • Ans. 

    As a member of FSAE club, I designed and built a formula-style race car for competition.

    • Designed and fabricated various components of the car, including the chassis, suspension, and steering system

    • Collaborated with team members to optimize the car's performance and ensure compliance with competition rules

    • Participated in testing and tuning sessions to improve the car's speed and handling

    • Managed the team's budget and res...

  • Answered by AI
  • Q3. Stress strain curve for ductile material
  • Ans. 

    Stress strain curve for ductile material

    • Ductile materials can undergo large plastic deformations before failure

    • Stress strain curve shows the relationship between stress and strain during deformation

    • The curve has three regions: elastic, plastic, and necking

    • Elastic region: linear relationship between stress and strain

    • Plastic region: non-linear relationship between stress and strain

    • Necking region: localized reduction in c...

  • Answered by AI
  • Q4. Why do we have piston rings?
  • Ans. 

    Piston rings are essential components in an engine that prevent oil from entering the combustion chamber and help maintain compression.

    • Piston rings create a seal between the piston and cylinder wall

    • They prevent oil from entering the combustion chamber

    • They help maintain compression by preventing gases from escaping

    • Piston rings also help dissipate heat from the piston

    • Without piston rings, the engine would lose power and

  • Answered by AI
  • Q5. Why not Masters?
  • Ans. 

    I chose to gain practical experience and develop my skills in the industry.

    • I wanted to gain practical experience in the industry

    • I believed that hands-on experience would be more valuable than a Masters degree

    • I wanted to develop my skills in a real-world setting

    • I felt that pursuing a Masters degree at this time would not align with my career goals

    • I have taken courses and attended workshops to continue my education and s

  • Answered by AI
  • Q6. What skills do you have that can benefit the company?
  • Ans. 

    I have strong leadership, communication, and problem-solving skills that can benefit the company.

    • Leadership skills to motivate and guide team members towards achieving goals

    • Effective communication skills to ensure clear understanding and collaboration among team members and with customers

    • Strong problem-solving skills to identify and resolve issues efficiently and effectively

    • Experience in managing budgets, schedules, an...

  • Answered by AI
  • Q7. On what factors the spring stiffness of a spring depends?
  • Ans. 

    The spring stiffness depends on various factors.

    • The material of the spring

    • The thickness of the wire used in the spring

    • The number of coils in the spring

    • The diameter of the spring

    • The length of the spring

    • The type of loading on the spring

    • The temperature of the spring

    • The presence of any pre-stress in the spring

  • Answered by AI
  • Q8. What non-technical works were you involved in FSAE club?
  • Ans. 

    I was involved in various non-technical works in FSAE club.

    • Organizing and managing team meetings

    • Coordinating with sponsors and arranging sponsorships

    • Planning and executing fundraising events

    • Recruiting new members and conducting interviews

    • Managing team budget and expenses

  • Answered by AI

Interview Preparation Tips

Round: Interview
Experience: It was a technical+HR round.
Tips: Write genuine HR answers.

General Tips: Select the sector that interests you and start revising core courses from the start of your placement semester.
Prepare for non-core also as the options in core sector are limited.
Learn from your failures and keep preparing for upcoming companies.  But do not lose hope.
Talk to seniors already placed in the company that you have targeted. try to attend ppts of all companies where you really want to go.Give some mock interviews. They can boost your confidence.
College Name: IIT KANPUR
Motivation: I was interested in a core mechanical job.
Bosch was on my top list as it makes tools and machines parts that are essentially the bread and butter of mechanical engineering.

Sona Comstar Interview FAQs

How many rounds are there in Sona Comstar Furnace Operator interview?
Sona Comstar interview process usually has 1 rounds. The most common rounds in the Sona Comstar interview process are Technical.

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