SANDHYA GROUP Mechanical Maintenance Engineer Interview Questions and Answers

Q1. What is distillation, types of distillation, internal of distillation column, Do you know DCS/PLC
Ans. 
Distillation is a separation process used in chemical engineering to separate components of a liquid mixture based on their boiling points.
• Distillation is a separation technique used to purify liquids or separate liquid mixtures.

• It relies on the differences in boiling points of the components in the mixture.

• The process involves heating the mixture to vaporize the more volatile component and then condensing it back into...read more
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Q2. What are chemical processes, do you know any processes, do you have seen any valves in daily life, what is pH, what are types of pumps
Ans. 
Chemical processes involve the transformation of raw materials into useful products using chemical reactions.
• Examples of chemical processes include distillation, fermentation, and polymerization.

• Valves are commonly used in chemical processes to control the flow of fluids.

• pH is a measure of the acidity or basicity of a solution.

• Types of pumps used in chemical processes include centrifugal pumps, positive displacement pu...read more
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Q3. What is P&iD diagram, asking by some chemical reaction , vapor pressure, boiling point, viscosity,etc
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Q4. Have you done HAZOP study, do you know any SOP have you followed any
Ans. 
Yes, I have participated in HAZOP studies and followed various SOPs in my role as a Production Engineer.
• HAZOP (Hazard and Operability Study) is a structured and systematic technique for identifying potential hazards in a process.

• I have been involved in HAZOP studies for projects involving chemical processing, where we identified risks related to equipment failure.

• SOPs (Standard Operating Procedures) are essential for e...read more
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Q5. How to start pump, what is two phase flow is there in pipe, control station work, ejector problem and troubleshooting, why we need vacuum in column
Ans. 
Answering questions related to starting pump, two phase flow, control station work, ejector problem and troubleshooting, and vacuum in column.
• To start a pump, ensure that the suction line is filled with liquid and open the discharge valve. Then, turn on the motor and gradually open the suction valve.

• Two phase flow is when both liquid and gas are present in the pipe. This can cause issues with pump performance and requi...read more
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Q1. What you know about boiler
Ans. 
A boiler is a closed vessel used to generate steam or hot water for heating or power generation.
• Boilers can be fueled by various sources such as natural gas, oil, coal, or biomass.

• Boilers can be classified into different types such as fire-tube, water-tube, and electric boilers.

• Boilers require regular maintenance to ensure efficient and safe operation.

• Boilers are commonly used in industries such as power generation, ch...read more
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Q2. What you know about company
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I am setting in office for aptitude test

Q1. Tell about your self
Ans. 
I am a dedicated Mechanical Engineer with a strong background in designing and implementing mechanical systems.
• Graduated with a degree in Mechanical Engineering from XYZ University

• Proficient in CAD software such as SolidWorks and AutoCAD

• Experienced in conducting stress analysis and simulations for mechanical components

• Worked on projects involving HVAC systems design and optimization
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Q2. What is your goals
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My goal is to continuously improve my technical skills, contribute to innovative projects, and eventually become a lead engineer in the field.
• Continuously improve technical skills through ongoing education and training

• Contribute to innovative projects by proposing and implementing new ideas

• Work towards becoming a lead engineer by taking on more responsibilities and leadership roles
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Equipment handled in past

Q1. Working principal of Plate heat exchanger
Ans. 
Plate heat exchanger works on the principle of transferring heat between two fluids through metal plates.
• Consists of multiple plates with small gaps in between for fluid flow

• Hot and cold fluids flow on opposite sides of the plates

• Heat is transferred through the plates from hot fluid to cold fluid

• Efficient in transferring heat due to large surface area of plates

• Commonly used in HVAC systems, refrigeration, and industria...read more
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Q2. NPSH of Pump and its importance while pump selection
Ans. 
NPSH of Pump is Net Positive Suction Head, crucial for preventing cavitation in pumps during operation.
• NPSH is the measure of a pump's ability to prevent cavitation by maintaining a sufficient pressure at the suction inlet.

• It is important to consider NPSH when selecting a pump to ensure it can operate effectively without cavitation.

• Factors affecting NPSH include pump design, fluid properties, and operating conditions.

• N...read more
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Q1. Last plant releted Questions.
Ans. Process previous plat type of reaction
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Q2. Heat exchanger distitlion and furnace cl2 handing
Ans. Type of heat exchanger working . distitlion proces . Type of distitlion.
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Q3. Fire and safety
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Q1. Tell me about yourself.
Ans. 
I am a service engineer with experience in troubleshooting and repairing complex machinery.
• I have a degree in mechanical engineering

• I have worked with various types of machinery including CNC machines and industrial robots

• I am skilled in diagnosing and repairing mechanical and electrical issues

• I have experience working with customers to resolve technical issues and provide training on equipment operation
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Q1. From mechanical,production
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Q1. Previous experience, job profile and experience
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Q1. Discuss on previous experience
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Q2. Salary discussion and working location
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Q1. VLookup, Sumifs
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