Invac Cast Interview Questions and Answers

There were 6 questions to be solved. 3 average and 3 tough questions.

Q1. Concepts ask in interview Java Threads Exception Collections Spring boot annotations Git
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Q1. A general conversations, regarding my experience, project.
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Q1. Write unit testing for adding two nimbers
Ans. 
Unit testing for adding two numbers
• Create a test case with two numbers and expected sum

• Call the function that adds two numbers

• Assert that the result matches the expected sum
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Q1. Explain challenge you faced in your last project
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Q1. Salary expectations
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Q1. About previous work experience
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Q2. Knowledge in valve industry
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Q1. Previous job profile
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Q2. History of work experience and knowledge
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Q3. Valve industry knowledge
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Q1. What are your salary expectations?
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Q2. What is your family background?
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Q3. Share details of your previous job.
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Q4. Why should we hire you?
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Q5. Why are you looking for a change?
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Q6. Where do you see yourself in 5 years?
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Q7. Tell me about yourself.
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What has been given to the company in the entire work time.

Q1. Market information , product specific
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Q2. Share Market details and competitor details, not about my present company
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Virtual meet with Zonal Head, Product Head and Branch head

Q1. What is jigs and fixtures, gcodes of cnc machines, drawing study, GD and T, Basic program for drilling and pcd calculations . hr is asked family background salary expectation job profile and duties and res...read more
Ans. 
Jigs and fixtures are tools used in manufacturing to hold and guide workpieces during machining processes.
• Jigs and fixtures are used to ensure accuracy and repeatability in machining operations.

• Gcodes are a standardized language used to control CNC machines.

• Drawing study involves analyzing technical drawings to understand dimensions, tolerances, and specifications.

• GD&T (Geometric Dimensioning and Tolerancing) is a syst...read more
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Q2. Different between jigs and fixtures
Ans. 
Jigs are used to guide and control the cutting tool, while fixtures hold and locate the workpiece.
• Jigs are used for drilling, tapping, and reaming operations.

• Fixtures are used for milling, grinding, and turning operations.

• Jigs are often made of steel and are more complex than fixtures.

• Fixtures are often made of cast iron and are simpler than jigs.

• Jigs are used to ensure accuracy and repeatability in mass production.

• Fix...read more
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Q3. G code for drilling and tapping
Ans. 
G code for drilling and tapping is used in CNC machines to control the movement of the drill and tap.
• G81 is used for drilling

• G84 is used for tapping

• The code specifies the depth, speed, and position of the drill or tap

• The code is written in a specific format and must be entered correctly for the machine to execute the command
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Q4. Pcd calculations
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Q5. Pcd driiling program for fanuc control
Ans. 
PCD drilling program for Fanuc control is a computer program used for drilling operations.
• PCD drilling program is used for drilling operations on materials like aluminum, copper, and composite materials.

• It is designed to work with Fanuc control systems.

• The program uses PCD (polycrystalline diamond) tools for drilling.

• It can be customized to meet specific drilling requirements.

• The program can be used for both roughing a
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Q6. How to make counter holes, which cutter using for the operations
Ans. 
Counter holes can be made using a counterbore cutter or a countersink cutter depending on the application.
• Counterbore cutters are used to create a flat-bottomed hole with a larger diameter than the original hole.

• Countersink cutters are used to create a conical recess at the surface of the material.

• The choice of cutter depends on the size and depth of the hole required, as well as the material being worked on.

• It is impo...read more
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Technical objective questions for cnc machines and programming knowledge for drawing study

Plant manager interview

Q1. Salary discussion after you agree for your salary then go to medical.
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Q1. How will you set up a simulation for cavitation test in CFD?
Ans. 
Setting up a cavitation test simulation in CFD involves defining the fluid properties, boundary conditions, and meshing.
• Define the fluid properties such as density, viscosity, and vapor pressure.

• Set up appropriate boundary conditions to simulate the cavitation phenomenon.

• Generate a high-quality mesh to accurately capture the cavitation effects.

• Choose a suitable turbulence model to account for the turbulent flow behavio...read more
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Q2. What is the parameter that is monitored in a pumping station sump simulation?
Ans. 
The parameter monitored in a pumping station sump simulation is water level.
• Water level is monitored to ensure it stays within safe operating limits.

• Monitoring water level helps prevent overflow or equipment damage.

• Examples of monitoring methods include float switches, ultrasonic sensors, and pressure transducers.
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Q3. What turbulence model do you use for CFD of centrifugal pumps?
Ans. 
I typically use the k-epsilon turbulence model for CFD of centrifugal pumps.
• I prefer the k-epsilon turbulence model due to its accuracy in predicting turbulent flow behavior.

• This model is widely used in industrial applications and is well-suited for simulating flow in centrifugal pumps.

• The k-epsilon model calculates turbulent kinetic energy (k) and its dissipation rate (epsilon) to model turbulence effects.

• Other common...read more
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Q4. How will you setup aero-acoustic simulation?
Ans. 
To setup aero-acoustic simulation, one must first define the geometry, mesh the domain, set up boundary conditions, choose appropriate turbulence model, and select suitable solver settings.
• Define the geometry of the object or flow field being studied

• Mesh the domain to discretize the geometry into smaller elements

• Set up appropriate boundary conditions to mimic real-world scenarios

• Choose a suitable turbulence model to ca...read more
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Q5. What was the major difficulty faced by you during a centrifugal pump design? Walk us through your successful and unsuccessful pump design projects?
Ans. 
The major difficulty faced during a centrifugal pump design was achieving optimal efficiency and performance.
• One major difficulty was selecting the right impeller design to ensure proper flow and pressure.

• Another challenge was balancing the pump components to minimize vibration and noise.

• Successful project: Designed a centrifugal pump for a chemical processing plant that exceeded performance expectations.

• Unsuccessful p...read more
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Q1. Electrical Design Related
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Q1. Electrical power
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