Cohizon Life Sciences Limited Mechanical Engineer Interview Questions and Answers

Q1. Basics of instrumentation, control system, field instrumentation, job role
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Q1. Overall plant proceess, job role, manpower handling and budget
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Q1. Family background and reason for chamge
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Q1. Tell me about your self
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Q2. Asking about caustic process some of
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Q3. Centrifuge pump working, and power and capacity calculations
Ans. 
Centrifuge pump power and capacity calculations involve understanding the pump's efficiency, flow rate, and head.
• Calculate the pump's power using the formula: Power (kW) = (Q x H x SG) / (3.6 x η)

• Determine the pump's capacity by calculating the flow rate (Q) in m^3/s

• Consider the pump's head (H) in meters and specific gravity (SG) of the fluid being pumped

• Efficiency (η) of the pump is crucial for accurate power calculat...read more
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Q4. Liquid ring compressor working
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A liquid ring compressor is a type of rotary positive displacement pump that uses a liquid seal to create compression.
• Uses a rotating impeller with blades to compress gas by creating a liquid ring around the impeller

• The liquid ring acts as a seal and helps in compression of gas

• Commonly used in applications where a continuous flow of gas with low pressure is required, such as in vacuum systems or wastewater treatment pl...read more
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Q5. Hydrogen compressor preventive maintenance
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Q1. Provide pervious salary
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Q2. Where r u living? Location
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Q3. Notice period joining process
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Q1. What Is GMAW ?
Ans. 
GMAW stands for Gas Metal Arc Welding, a welding process that uses a continuous solid wire electrode and shielding gas to create a weld.
• Uses a continuous solid wire electrode

• Requires a shielding gas to protect the weld from atmospheric contamination

• Commonly used in industries like automotive, construction, and manufacturing
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Q2. What are different between MIG & MAG ?
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MIG stands for Metal Inert Gas welding, while MAG stands for Metal Active Gas welding. The main difference lies in the type of shielding gas used.
• MIG welding uses inert gases like argon or helium to shield the weld pool from atmospheric contamination, while MAG welding uses active gases like carbon dioxide or a mixture of gases.

• MIG welding is typically used for non-ferrous metals like aluminum, while MAG welding is mor...read more
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Q3. What is WPS Procee ?
Ans. 
WPS Procee is a welding procedure specification that outlines the details of a specific welding process.
• WPS Procee includes information such as welding materials, welding parameters, preheat and post-weld heat treatment requirements.

• It is essential for ensuring consistency and quality in welding operations.

• WPS Procee is often required in industries such as construction, manufacturing, and oil & gas.

• Example: A WPS Proce...read more
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Q4. What is PQR Process ?
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PQR Process is a procedure used in welding to qualify the welding procedure specification.
• PQR stands for Procedure Qualification Record.

• It involves testing and documenting the variables used during the welding process.

• The purpose is to ensure that the welding procedure will produce the desired quality of welds.

• PQR Process is essential for ensuring the integrity and strength of welded joints.

• Examples of variables tested...read more
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Q1. Tell about yourself.
Ans. 
Experienced Senior Engineer with a strong background in software development and project management.
• Over 10 years of experience in software engineering

• Proficient in multiple programming languages such as Java, Python, and C++

• Led successful projects from conception to completion, resulting in increased efficiency and cost savings

• Strong problem-solving skills and ability to work well in a team environment
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Q2. Why you want to switch your job .
Ans. 
Seeking new challenges and opportunities for growth.
• Looking for a new environment to learn and develop new skills.

• Interested in working on different projects to broaden my experience.

• Seeking a company with better career advancement opportunities.

• Want to explore new technologies and methodologies in the industry.
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Q1. Tell me About yourself?
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Q2. Basic electrical?
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Q3. Generation protection?
Ans. 
Generation protection refers to safeguarding electrical generators from faults and abnormal conditions.
• Protects generators from overloads and short circuits.

• Uses protective relays to detect faults and isolate affected areas.

• Example: Differential protection for generator windings.

• Involves monitoring parameters like voltage, current, and frequency.

• Coordination with other protection devices in the power system.
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Q4. Synchronize procedure?
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A synchronized procedure ensures that only one thread can access a resource at a time, preventing data inconsistency.
• Synchronized methods in Java: Use 'synchronized' keyword to lock the method for one thread at a time.

• Example: 'public synchronized void increment() { count++; }'

• Synchronized blocks: More granular control over synchronization, locking only specific code sections.

• Example: 'synchronized(this) { count++; }'

• T...read more
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Q1. ATFD,PUMPS,ANF,PIPING, GENERAL ROUTINE MAINTENANCE PTW,GLR,ETC
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Q2. Vibration related questions
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Q3. Types of Alighnment
Ans. 
Types of alignment in mechanical engineering include shaft alignment, coupling alignment, and gear alignment.
• Shaft alignment ensures that the centerlines of connected shafts are in the same straight line.

• Coupling alignment involves aligning the coupling halves to ensure smooth power transmission.

• Gear alignment ensures proper meshing of gears for efficient operation.

• Other types of alignment include belt alignment, pulle...read more
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Q1. Salary discussion
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Q1. Share details of your previous job.
Ans. 
In my previous role, I led a team in developing scalable software solutions, enhancing system performance and user experience.
• Managed a team of 5 engineers, focusing on agile methodologies to improve project delivery times.

• Developed a microservices architecture that reduced system downtime by 30%.

• Implemented CI/CD pipelines, which increased deployment frequency by 50%.

• Collaborated with cross-functional teams to gather ...read more
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Q2. What are your strengths and weaknesses?
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I excel in problem-solving and collaboration, but I sometimes struggle with time management under tight deadlines.
• Strength: Strong analytical skills - I successfully led a project that reduced processing time by 30%.

• Strength: Excellent teamwork - I collaborated with cross-functional teams to deliver a product ahead of schedule.

• Weakness: Time management - I occasionally underestimate the time needed for tasks, but I'm w...read more
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Q3. Tell me about yourself.
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Experienced Senior Engineer with a strong background in software development, project management, and team leadership.
• Over 10 years of experience in software engineering, specializing in full-stack development.

• Led a team of 5 engineers in developing a scalable e-commerce platform that increased sales by 30%.

• Proficient in multiple programming languages including Java, Python, and JavaScript.

• Implemented Agile methodologi...read more
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Logical reasoning, quant, verbal

Technical

Number searies etc