GHCL Limited Mechanical Graduate Engineer Trainee 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. 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. 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. Does pump have compression test? Yes
Ans. 
Yes, pump has compression test.
• Compression test is performed on pumps to check the efficiency of the pump.

• It measures the pressure generated by the pump against a closed valve.

• It helps in identifying any leaks or blockages in the pump.

• Compression test is commonly performed on centrifugal pumps.

• It is an important part of pump maintenance and troubleshooting.
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Q2. What is the highest power does pump flow? Between 500_ 780 watts .hp less than 1hp.
Ans. 
The highest power of pump flow is less than 1 horsepower, between 500-780 watts.
• The pump flow power ranges between 500-780 watts

• The power is less than 1 horsepower

• Examples of pumps with this power range include submersible pumps and centrifugal pumps
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Q1. Explain about your current roles
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Q2. Detailed technical explanation of the Projects that I have worked with
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Q1. Pipe Sizing Calculation?
Ans. 
Pipe sizing calculation involves determining the appropriate diameter of a pipe based on flow rate, pressure drop, and material properties.
• Calculate the required flow rate for the system

• Determine the pressure drop allowed in the system

• Consider the material properties of the pipe such as friction factor and roughness

• Use pipe sizing charts or formulas to find the appropriate diameter

• Ensure the selected pipe size meets th
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Q2. Corrosion allowance & some questions in ASME B31.3
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Q3. Reason for Job Change
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Basic aptitude question of gate and in technical go through gate 1 mark question

Q1. Reynold no. Details
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Q2. Shell and tube heat exchanger design
Ans. 
Shell and tube heat exchanger design involves selecting appropriate materials, determining tube layout, and calculating heat transfer coefficients.
• Select appropriate materials based on fluid properties and operating conditions

• Determine tube layout to optimize heat transfer efficiency

• Calculate heat transfer coefficients to ensure proper heat exchange

• Consider factors like fouling, pressure drop, and thermal expansion in ...read more
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