Praxair Graduate Engineer Trainee (Get) Interview Questions and Answers

It will be of Medium difficulty

It's is consists of easy questions

Q1. 25 mins on coding 15 mins on aptitude 10 mins on communication
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Q1. Azure, C#,Angular ,Aptitude
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Q1. Solid principles, OOPS ,Data analytics, virtualization
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Q1. Asking about back ground and also CTC structure also expected salary
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Q2. Telling about back ground details previous employer and expectations
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Q3. All salery related asking its proof
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Q4. Giving bank statement
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Q1. Asking related about utility section and Sap .. also asking about technical questions also asking root cost
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Q2. Telling about utility and sap
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Q1. Asking about All process details knowledge and my experience
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Q2. Telling him all process about utility and mechanical knowledge
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Q3. How to check mechanical seal oky
Ans. 
To check mechanical seal, perform visual inspection, pressure test, and leakage test.
• Perform visual inspection to check for any visible damage or wear on the seal

• Conduct a pressure test to ensure the seal can withstand the required pressure

• Perform a leakage test to check if the seal is properly sealing the joint

• Check the temperature of the seal to ensure it is within the specified range

• Check the lubrication of the seal
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Q4. By calculate runout of shaft
Ans. 
Runout of a shaft can be calculated by measuring the amount of deviation from a true circular path.
• Use a dial indicator to measure the deviation of the shaft from a true circular path

• Rotate the shaft and take readings at various points to get an accurate measurement

• Calculate the average deviation to determine the runout of the shaft

• Runout can be caused by various factors such as misalignment, bent shaft, or worn bearin
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Q5. Utility load how to calculate
Ans. 
Utility load is calculated by determining the total power consumption of all devices connected to the utility grid.
• Determine the power consumption of each device connected to the grid

• Add up the total power consumption of all devices

• Consider the time of day and season to account for varying energy demands

• Factor in any renewable energy sources or backup generators

• Use software tools to automate the calculation process
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Q6. Telling about technical solutions
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Q1. Are you okay with doing routine jobs
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Q2. Tell me more about yourself
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It was straightforward

Q1. Was easy explaining about role
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Q2. Previous experience. How to handle the role and expectation. Work schedule. Explain about the team
Ans. 
The candidate should discuss their previous experience, how they handle their role and expectations, their work schedule, and provide an explanation about their previous team.
• Discuss previous experience in software engineering roles

• Explain how you handled your role and met expectations in previous positions

• Describe your typical work schedule and any flexibility you have

• Provide an overview of your previous team, their s
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Q1. Lots of technical questions
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Q2. How many points need inspection
Ans. 
The number of points that need inspection varies depending on the specific context and requirements.
• The number of points needing inspection can be determined by the scope of the analysis or evaluation.

• Factors such as the size of the dataset, complexity of the data, and specific objectives of the analysis can influence the number of points to inspect.

• For example, in a quality control process, a certain percentage of pro...read more
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Q3. Is tml important for maintenance
Ans. 
Yes, Total Maintenance Loss (TML) is important for maintenance as it helps in identifying critical equipment and prioritizing maintenance activities.
• TML is a key performance indicator used to measure the overall maintenance effectiveness of a system or equipment.

• It helps in identifying equipment that is causing the most downtime or losses in production.

• By analyzing TML, maintenance teams can prioritize their efforts on...read more
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Q1. How to design the diameter of distillation column
Ans. 
The diameter of a distillation column is designed based on factors such as feed flow rate, composition, pressure, and efficiency.
• Calculate the required vapor and liquid flow rates based on the feed composition and desired separation efficiency.

• Consider the pressure drop along the column and the desired residence time for the vapor and liquid phases.

• Use design equations and correlations to determine the optimal diameter...read more
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Q2. How to calculate no of trays and reflux ratio?
Ans. 
Number of trays and reflux ratio can be calculated using various methods such as McCabe-Thiele method or Fenske equation.
• Use McCabe-Thiele method for distillation columns to determine number of trays required.

• Calculate reflux ratio by dividing the liquid returning to the column by the liquid leaving the top tray.

• Consider factors such as desired separation efficiency and operating conditions when determining number of t
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Q3. Tray vs packing?
Ans. 
Tray is used for organizing items while packing is the process of placing items in a container for transportation or storage.
• Tray is typically used for organizing small items or serving food, while packing involves placing items in a container for transportation or storage.

• Trays can come in various sizes and materials, such as plastic, metal, or wood, while packing materials can include boxes, bags, or containers.

• Examp...read more
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Q4. How to calculate p drop in a pipe
Ans. 
To calculate pressure drop in a pipe, use the Darcy-Weisbach equation or the Hazen-Williams equation.
• Use the Darcy-Weisbach equation: ΔP = f * (L/D) * (ρ * V^2) / 2

• Use the Hazen-Williams equation: ΔP = 10.67 * Q^1.85 / (C^1.85 * D^4.87)

• Where ΔP is the pressure drop, f is the Darcy friction factor, L is the pipe length, D is the pipe diameter, ρ is the fluid density, V is the fluid velocity, Q is the flow rate, and C is...read more
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Q5. Explain le chatelier principle
Ans. 
Le Chatelier's principle states that a system at equilibrium will respond to a stress by shifting to counteract the stress and restore equilibrium.
• If a stress is applied to a system at equilibrium, the system will adjust to minimize the effect of the stress.

• Changes in concentration, pressure, or temperature can cause a shift in equilibrium.

• For example, if more reactants are added to a system at equilibrium, the system ...read more
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Q1. Difference between list and tuple
Ans. 
List is mutable, tuple is immutable in Python.
• List can be modified, tuple cannot be modified

• List uses square brackets [], tuple uses parentheses ()

• List is used for collections of items that may change, tuple is used for fixed collections
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