Larsen & Toubro Limited QA QC Inspector Interview Questions and Answers

Q1. What is pwht ?
Ans. 
PWHT stands for Post Weld Heat Treatment, a process used to reduce residual stresses and improve the mechanical properties of welded joints.
• PWHT involves heating the welded component to a specific temperature for a certain period of time, followed by controlled cooling.

• The process helps to eliminate hydrogen cracking, improve toughness, and reduce distortion in the welded joint.

• Common methods of PWHT include furnace he...read more
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Q2. What is wqt range ?
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WQT range refers to the range of values for Water Quality Testing in a specific context.
• WQT range can vary depending on the parameters being tested, such as pH, turbidity, dissolved oxygen, etc.

• For example, the WQT range for pH in drinking water may be 6.5-8.5.

• Monitoring and maintaining WQT range is crucial for ensuring safe and clean water supply.

• Regular testing and analysis of water samples help in determining if the
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Q3. Acceptance criteria of LPT
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LPT acceptance criteria ensure that the test results meet specified requirements.
• Test results must meet specified requirements outlined in the acceptance criteria

• Acceptance criteria should be clearly defined and documented

• Criteria may include specific performance metrics or thresholds

• Examples: minimum tensile strength, maximum elongation percentage
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Part-1 consist of General aptitude & Part-2 consist of Technical question related to Civil Engineering

Q1. Purely technical no other questions other than technical question relevant to the post we are applying
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Q1. Salary Expectations & other stuffs
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Q1. What is the difference between qa and qc
Ans. 
QA focuses on preventing defects while QC focuses on identifying and fixing defects.
• QA is a process-oriented approach that ensures quality is built into the product from the beginning

• QC is a product-oriented approach that involves testing and inspecting the product to identify defects

• QA is proactive while QC is reactive

• QA involves continuous improvement while QC involves finding and fixing defects

• Examples of QA activit...read more
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Q2. Why you choose QC department
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I chose the QC department because of my passion for ensuring quality and my attention to detail.
• I have always been meticulous and detail-oriented, which are essential qualities for a QC engineer.

• I enjoy the process of identifying and resolving quality issues to improve overall product performance.

• I find satisfaction in ensuring that products meet or exceed customer expectations.

• I believe that quality control plays a cr...read more
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Q3. How you tackle NCR situation
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I investigate the root cause, propose corrective actions, and ensure implementation to prevent recurrence.
• Identify the root cause of the NCR

• Propose corrective actions to prevent recurrence

• Ensure implementation of corrective actions

• Document the NCR and corrective actions taken

• Communicate with relevant stakeholders
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Q4. What is the procedure of soil and concrete strength testing
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Soil and concrete strength testing involves several steps including sample collection, preparation, and testing.
• Collect soil and concrete samples from the site

• Prepare the samples for testing by drying and crushing them

• Perform compression tests on concrete samples to determine strength

• Perform triaxial or unconfined compression tests on soil samples to determine strength

• Record and analyze the test results to ensure compl
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Q5. How you convince your client representative on a critical situation
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To convince a client representative on a critical situation, it is important to communicate effectively, provide evidence and solutions, and build trust.
• Listen actively to the client representative's concerns and understand their perspective.

• Clearly explain the critical situation, its impact, and potential risks.

• Present evidence such as test results, data analysis, or documentation to support your claims.

• Offer alternat...read more
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Q1. Target mean strength of M-35 Grade concrete
Ans. 
Target mean strength of M-35 Grade concrete is 35 MPa.
• The target mean strength of M-35 Grade concrete is 35 MPa.

• M-35 Grade concrete is designed for structural applications requiring high strength.

• Quality control measures should be in place to ensure the concrete meets the target strength.
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Q2. What is the soil compaction percentage to be achieved in Embankment
Ans. 
Soil compaction percentage in embankment typically ranges from 90% to 95% depending on the type of soil and project specifications.
• Soil compaction percentage in embankment is usually between 90% to 95%

• The exact percentage may vary based on the type of soil being compacted

• Project specifications and requirements will dictate the specific compaction percentage to be achieved
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Aptitude test of any and make it easyly

Q1. About the quality and industrial questions
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Q2. Manufacturing compunds and drawing in sheet metal and fabrication
Ans. 
Manufacturing compounds and drawing in sheet metal and fabrication are important aspects of quality inspection.
• Understanding manufacturing compounds and drawing in sheet metal and fabrication is crucial for quality inspection.

• Inspectors should be familiar with the materials and processes used in manufacturing.

• Examples of compounds used in manufacturing include adhesives, coatings, and sealants.
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