Cohizon Life Sciences Limited Utility 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. 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 ?
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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.
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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. Share details of your previous job.
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Q2. What are your strengths and weaknesses?
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Q3. Tell me about yourself.
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Q1. Online examination with 60 Technical questions in 60 minutes
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Online examination of 30 questions in 30 minutes

Online examination of 30 questions in 30 minutes

Q1. Personal details, background, work experience, Strengths & weakness
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Q1. Transformers questions
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Q2. Power generation and distribution Questions
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Q1. Transformers questions
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Q2. Power generation and distribution Questions
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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
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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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