Thirumalai Chemicals Interview Questions and Answers

Q1. Can you describe your experience with your previous company?
Ans. 
I have 5 years of experience as a Production Supervisor in a manufacturing company.
• Managed a team of 20 production workers to meet daily production targets

• Implemented lean manufacturing principles to improve efficiency and reduce waste

• Trained new employees on safety protocols and production processes
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Q2. What is the process of operating a plant?
Ans. 
Operating a plant involves overseeing production processes, ensuring efficiency, quality control, and maintenance.
• Supervising production processes to ensure efficiency and productivity

• Monitoring quality control measures to maintain high standards

• Coordinating with maintenance team to address any equipment issues

• Implementing safety protocols to ensure a safe working environment

• Analyzing production data to identify areas ...read more
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Q3. What are the pre-commissioning activities involved in a project?
Ans. 
Pre-commissioning activities involve testing and preparing equipment before it is fully operational.
• Cleaning and flushing of pipelines and equipment

• Testing of instruments and control systems

• Checking for leaks and ensuring proper functioning of valves

• Calibration of equipment and instruments

• Documentation of all activities and results
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Q4. What is the process of Hydrotest, and how does it relate to pneumatic testing, cardboards, and blasting?
Ans. 
Hydrotest is a process of testing the strength and integrity of pressure vessels or pipelines using water or other liquids.
• Hydrotest involves filling the vessel or pipeline with water or another liquid to a specified pressure level.

• The pressure is then held for a specified duration to ensure there are no leaks or structural weaknesses.

• Pneumatic testing is similar to hydrotesting but uses air or gas instead of liquid.

• Ca...read more
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Q1. What was your previous salary, and what are your salary expectations?
Ans. 
I prefer not to disclose my previous salary, but I am looking for a competitive salary based on my experience and qualifications.
• Focus on discussing salary expectations rather than disclosing previous salary

• Research industry standards and company budget to determine reasonable salary expectations

• Consider factors such as job responsibilities, location, and benefits when determining salary expectations
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Q2. Can you provide your introduction in English?
Ans. 
I am an experienced Production Supervisor with a strong background in managing manufacturing processes and leading teams to meet production goals.
• Over 5 years of experience in production supervision

• Skilled in optimizing production processes to improve efficiency

• Proven track record of meeting production targets and deadlines

• Strong leadership and communication skills

• Familiar with lean manufacturing principles
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Q1. Different types of load. How to select the motor.
Ans. 
Different types of loads include resistive, inductive, and capacitive loads. Motor selection depends on factors like load type, power requirements, speed, and efficiency.
• Resistive loads convert electrical energy into heat, like incandescent light bulbs.

• Inductive loads create magnetic fields, like motors and transformers.

• Capacitive loads store electrical energy, like capacitors.

• Select motor based on load type, power req...read more
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Q2. Interlocks in the chiller
Ans. 
Interlocks in the chiller are safety mechanisms that prevent the chiller from operating under unsafe conditions.
• Interlocks can include high pressure, low pressure, and temperature sensors that shut down the chiller if thresholds are exceeded.

• Interlocks may also include flow switches to ensure proper flow of refrigerant or water through the chiller.

• Some chillers have interlocks that prevent the compressor from starting ...read more
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Q3. Dga test significance and analysis.
Ans. 
DGA test is a significant diagnostic tool used to analyze the dissolved gases in transformer oil to detect potential faults.
• DGA test helps in identifying potential faults in transformers by analyzing the presence of specific gases such as methane, ethylene, and acetylene.

• The levels of these gases can indicate issues like overheating, partial discharge, or arcing within the transformer.

• Interpretation of DGA results requ...read more
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Q4. Ha. You heard of gd2
Ans. 
gd2 is a measure of the inertia of a rotating body, calculated as the product of the mass moment of inertia and the square of the angular velocity.
• gd2 is used in engineering to analyze the rotational motion of objects.

• It is calculated by multiplying the mass moment of inertia by the square of the angular velocity.

• gd2 is important in designing rotating machinery and systems.

• For example, in the design of a flywheel for e...read more
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Educational, behaviour aspects

Q1. Subject knowledge?
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Q2. About yourself &About your favourite subject knowledge?
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Q3. Why should we hire you?
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Q4. In which area you want to work ?
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Q5. In our company what role should you want
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Q6. What is your favourite subject in your field?
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Q1. How much cleareance in bearing?.
Ans. 
Bearing clearance is the space between the bearing and its housing, crucial for proper function and longevity.
• Clearance Tolerance: The ideal clearance varies based on application; for example, automotive engines typically require 0.001 to 0.005 inches.

• Heat Expansion: Bearings expand when heated; adequate clearance prevents binding and ensures smooth operation.

• Lubrication: Sufficient clearance allows for proper oil flow...read more
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Q2. Rotary equipment related.
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Q3. Lobe blower related.
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Q4. Mechanical seal assembly
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Q5. Utility area boiler and turbine related.
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