Mintel Senior Engineer Interview Questions and Answers

Ai interview backend microservices core java

Q1. Microservice architecture spring boot
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Q2. Rest api implementation and communication
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Q1. What is Surging?
Ans. 
Surging is a phenomenon in which a system experiences rapid and temporary increases in pressure or flow rate.
• Surging can occur in various systems such as pipelines, compressors, pumps, and turbines.

• It is often caused by sudden changes in demand, equipment malfunctions, or improper system design.

• Surging can lead to damage to equipment, reduced efficiency, and safety hazards.

• Examples include water hammer in pipelines and
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Q2. What is Froude No?
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Froude number is a dimensionless number used to quantify the influence of gravity on fluid flow.
• Froude number is defined as the ratio of inertia force to gravitational force in a fluid flow.

• It is used to determine the type of flow (subcritical, critical, or supercritical) in open channel flow.

• Froude number is calculated as Fr = V / sqrt(g * d), where V is velocity, g is acceleration due to gravity, and d is depth of fl
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Q3. What is Weeping?
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Weeping is the process of fluid leaking out of a solid material, often due to damage or excess moisture.
• Weeping can occur in materials such as wood, concrete, and metal.

• It is often a sign of structural damage or deterioration.

• Examples include water weeping from a crack in a wall or oil weeping from a car engine.

• Weeping can also refer to the shedding of tears in humans and animals.
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Q1. Draw basic PFD of a WTP plant including feed quality and all the sensors.
Ans. 
A basic PFD of a WTP plant including feed quality and sensors.
• Include feed quality parameters such as turbidity, pH, temperature, and flow rate

• Include sensors for monitoring parameters like chlorine levels, pressure, and conductivity

• Show the flow of water through various treatment processes like coagulation, flocculation, sedimentation, filtration, and disinfection
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Q2. What are the process checks done in Line testing of a 6inch dia pigging line including the calculations involved?
Ans. 
Process checks in line testing of a 6inch dia pigging line and associated calculations
• Pressure testing to ensure integrity of the line

• Flow testing to check for blockages or restrictions

• Calibration of pigging equipment for accurate results

• Calculations involve pressure drop, flow rate, and pigging efficiency

• Recording and analyzing data for future reference
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Q1. Why do u qant to leave ur previous company?
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Q2. How do u solve a matter of conflict during a Project meeting?
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Q1. Basic topics of plsql
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Q2. One query to fetch max n min of salary from emp table
Ans. 
Use SQL query to fetch maximum and minimum salary from emp table
• Use SELECT MAX(salary) FROM emp to fetch maximum salary

• Use SELECT MIN(salary) FROM emp to fetch minimum salary
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Q1. Performance tuning
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Q2. Indexes and exceptions used
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Indexes and exceptions are used to optimize database performance and handle errors in code.
• Indexes are used to quickly retrieve data from a database by creating a sorted list of values.

• Exceptions are used to handle errors in code and prevent the program from crashing.

• Examples: Creating indexes on frequently queried columns like 'id' or 'timestamp'. Using try-catch blocks to handle exceptions like divide by zero.
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Q1. Explain GD&T and its significance
Ans. 
GD&T stands for Geometric Dimensioning and Tolerancing. It is a system for defining and communicating engineering tolerances.
• GD&T is used to specify the allowable variations in form, size, and orientation of part features.

• It helps improve communication between designers, engineers, and manufacturers by providing a clear and concise way to define part requirements.

• GD&T uses symbols, such as position, concentricity, and ...read more
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Q2. Difference between first and third angle projection
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First angle projection is commonly used in Europe and Asia, while third angle projection is commonly used in North America.
• First angle projection places the object in the first quadrant, with the plane of projection between the observer and the object.

• Third angle projection places the object in the third quadrant, with the plane of projection behind the object.

• First angle projection is commonly used in Europe and Asia,...read more
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Q3. How well are you in CATIA
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Q1. What is your salary expectations
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Q1. Java hash map and how it works
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Java hash map is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values based on keys.
• HashMap in Java implements the Map interface and allows null keys and values.

• It uses hashing to store and retrieve key-value pairs, providing O(1) time complexity for get() and put() operations.

• Example: HashMap map = new HashMap<>(); map.put("key", 1); int value = map.get("key");
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Hacker Rank test with medium difficulty

Q1. Technical discussion mainly around system design, different architectures, problem solving and coding question may be asked.
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A case study for a problem statement

Q1. OOPS concepts - encapsulation , abstraction
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Q2. Java core - exceptions, theory
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Q1. General questions
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Q2. Location preferences , family
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Q1. MITER attack framwork/ Cyber kill chain process/attack vectors
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Q2. SIEM tools and its use
Ans. 
SIEM tools are security information and event management tools used to collect, analyze, and report on security data.
• SIEM tools help organizations to detect and respond to security incidents in real-time.

• They collect data from various sources such as network devices, servers, and applications.

• SIEM tools use correlation rules to identify patterns and anomalies that may indicate a security threat.

• Examples of SIEM tools i...read more
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Q3. Are you written a playbooks rules
Ans. 
Yes, I have experience writing playbooks rules for automation in various engineering projects.
• Yes, I have written playbooks rules using tools like Ansible for automating infrastructure tasks.

• I have experience creating rule-based automation scripts to streamline engineering processes.

• I can provide examples of playbooks I have written for automating deployment, configuration, and monitoring tasks.
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Q4. Digital forensics working procedures
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Digital forensics working procedures involve collecting, preserving, analyzing, and presenting digital evidence in a legally admissible manner.
• Collecting digital evidence from various sources such as computers, mobile devices, and cloud storage.

• Preserving the integrity of the evidence by creating forensic images and maintaining a chain of custody.

• Analyzing the evidence using specialized tools and techniques to uncover ...read more
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