400+ QA QC Engineer Interview Questions and Answers

Answering questions related to QA QC Engineer position

• If material is purchased from any factory, I will ensure that it meets the required specifications and standards

• I can work for 8-10 hours a day depending on the workload

• I am familiar with plant calibration procedures and can perform them

• The borrow area will be selected based on factors such as soil type, distance from the construction site, and availability

• I manage my juniors by delegating tasks, providing guidance, and mo...read more

I have conducted various tests to ensure quality and compliance.

• Functional testing to verify that the software meets the specified requirements

• Regression testing to ensure that new changes do not introduce defects in existing functionality

• Performance testing to evaluate the system's responsiveness and stability under different loads

• Usability testing to assess the user-friendliness and intuitiveness of the software

• Security testing to identify vulnerabilities and ensure data pr...read more

Admixtures are used in concrete to enhance its properties. Common types include water reducers, accelerators, and air-entraining agents.

• Water reducers: reduce the amount of water needed for workability without affecting strength

• Accelerators: speed up the setting and hardening process

• Air-entraining agents: create small air bubbles to improve freeze-thaw resistance

• Retarders: delay the setting time

• Superplasticizers: improve workability and reduce water content

• Corrosion inhibitor...read more

In beam, column, and slab casting, QA QC engineers check for proper reinforcement, formwork, concrete mix, curing, and dimensions.

• Check reinforcement placement and spacing to ensure it meets design requirements.

• Inspect formwork for proper alignment, stability, and adequate support.

• Verify the concrete mix design and ensure proper pouring and compaction techniques are followed.

• Monitor curing methods to ensure the concrete achieves the desired strength and durability.

• Measure and...read more

I am proficient in ASME and ISO standards.

• I have extensive knowledge of ASME B31.3 and B31.1 codes for piping and pressure vessels.

• I am also well-versed in ISO 9001 quality management system standards.

• I have experience in implementing and maintaining quality control procedures based on these standards.

• I am familiar with IS and BSEN standards, but not as proficient as ASME and ISO.

The grade of received concrete at the site can be determined by checking the documentation, conducting visual inspections, and performing tests.

• Check the documentation provided by the supplier, which should mention the grade of the concrete.

• Conduct visual inspections to assess the appearance and consistency of the concrete. Different grades may have different characteristics.

• Perform tests such as slump test, compressive strength test, or air content test to determine the grad...read more

Codecs used for video and audio formats vary depending on the specific format.

• H.264 is commonly used for video compression in MP4 and AVI formats

• AAC is a popular audio codec used in MP4 and other formats

• VP9 is used for video compression in WebM format

• Opus is a popular audio codec used in WebM and other formats

I have used various gauges and software for QA QC engineering.

• I have used calipers to measure dimensions of parts.

• I have used micrometers to measure thickness and diameter of materials.

• I have used pressure gauges to measure pressure in systems.

• I have used temperature gauges to measure temperature in different environments.

• I have used torque wrenches to measure the torque applied to fasteners.

• I have used coordinate measuring machines (CMM) to measure the dimensions of complex ...read more

The interview question is about refractory application, testing, brick lining, quality control, and the responsibilities of an inspector and supervisor.

• Refractory application and supervision involve knowledge of different types of refractory materials and their properties.

• There are several types of refractory testing, including thermal conductivity, porosity, and compressive strength testing.

• To ensure perfect brick lining, factors such as proper selection of refractory materi...read more

I would investigate the root cause of the unstable slump and take corrective actions.

• Check the concrete mix design and adjust if necessary

• Verify the calibration of the slump cone and test equipment

• Inspect the batching and mixing process for errors

• Consult with concrete supplier and adjust delivery schedule

• Notify project management and stakeholders of delays

• Ensure proper disposal of rejected concrete

• Implement preventive measures to avoid future rejections

Explaining tolerance of cover block, number of samples in cubes and soil filling in layers.

• Tolerance of cover block is the permissible deviation from the specified dimension.

• We take 03nos of pieces in cubes for steel testing to ensure accuracy and consistency.

• Soil filling in maximum 300mm layer is done to ensure proper compaction and avoid settlement issues.

Material specifications for piping, forgings, fittings, tubes, and fasteners for MS materials include ASTM standards and specific grades.

• ASTM A53/A53M - Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

• ASTM A105/A105M - Standard Specification for Carbon Steel Forgings for Piping Applications

• ASTM A234/A234M - Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service

• A...read more

Refer to ASME Section II Part A for remaining chemical composition of SA-516 Gr. 70 plates

• Refer to ASME Section II Part A for detailed chemical composition

• Check the material test report (MTR) for specific chemical composition

• Consult with the manufacturer or supplier for any additional information

No, code is not applicable for all material testing procedures.

• Code is primarily used for software testing, not material testing.

• Material testing procedures involve physical tests and measurements.

• Examples of material testing procedures include tensile testing, hardness testing, and impact testing.

To check reinforcement as per drawing, use measuring tape and compare with the drawing. If there is a problem in slab steel, check for any missing bars or incorrect placement.

• Use measuring tape to check the length and diameter of reinforcement bars

• Compare the measurements with the drawing to ensure they match

• Check for any missing bars or incorrect placement

• If there is a problem, consult the structural engineer for a solution

GSA testing stands for General Services Administration testing.

• GSA testing is a process of evaluating products and services to ensure they meet the standards set by the General Services Administration.

• It is commonly used in government procurement to ensure that products and services meet the required specifications.

• GSA testing can include a variety of tests, such as performance testing, durability testing, and safety testing.

• Examples of products that may undergo GSA testing i...read more

Stainless steel is a corrosion-resistant alloy made of iron, carbon, and other elements. Iron has a melting point of 1538°C.

• Stainless steel is an alloy of iron, carbon, and other elements like chromium, nickel, and molybdenum.

• It is known for its corrosion resistance and durability.

• Iron has a melting point of 1538°C.

• The iron-carbon diagram shows the relationship between carbon content and the properties of steel.

• The chemical composition of stainless steel varies depending on t...read more

Brick, plaster, and tile work can be checked by inspecting for proper alignment, levelness, and uniformity.

• Check for proper alignment of bricks and tiles using a straight edge or level.

• Inspect for levelness of plaster using a spirit level.

• Check for uniformity of color and texture in tiles.

• Ensure that the joints between bricks or tiles are consistent in size and shape.

• Look for any cracks or gaps in the plaster or grout between tiles.

• Check that the corners of the walls are squa...read more

Welding defects include porosity, cracks, incomplete fusion, and distortion. Measures to reduce defects include proper training, inspection, and maintenance.

• Porosity: caused by gas entrapment, can be reduced by proper shielding gas and electrode selection

• Cracks: caused by high stress or improper cooling, can be reduced by preheating and controlling cooling rate

• Incomplete fusion: caused by insufficient heat or improper technique, can be reduced by proper technique and inspecti...read more

Inspecting raw materials and components for quality assurance in engineering projects involves reviewing MTCs, checking various components like shell, dish end, cone, and heat exchangers, offering third-party inspections, following QAP, and conducting visual checks.

• Review Material Test Certificates (MTCs) for compliance with specifications

• Check the dimensions, surface finish, and material composition of plates, pipes, fittings, and flanges

• Inspect the shell for any defects suc...read more

The size of the concrete cube is typically 150x150x150 mm, the size of the slump cone is 100 mm, and the percentage of strength obtained varies for different curing periods.

• Concrete cube size: 150x150x150 mm

• Slump cone size: 100 mm

• Percentage of strength obtained varies for 3, 7, 14, and 28 days

• Example: Strength obtained at 28 days is typically around 90-95% of the design strength

Quality refers to the degree of excellence or superiority of a product or service.

• Quality is a measure of how well a product or service meets customer expectations and requirements.

• It involves ensuring that the product or service is free from defects or errors.

• Quality also includes factors such as reliability, durability, and performance.

• Quality can be subjective and may vary depending on the context and industry.

• Examples of quality measures include customer satisfaction rati...read more

Various tests are conducted on cement and aggregate to ensure their quality and suitability for construction purposes.

• Chemical tests to determine the composition of cement and aggregate

• Physical tests to determine the strength, durability, and consistency of cement and aggregate

• Aggregate tests include sieve analysis, specific gravity, and absorption tests

• Cement tests include setting time, soundness, and compressive strength tests

QA QC Engineer interview questions covering topics such as Quality Assurance, CAPA 8D, preventive and corrective actions, quality tools, and welding.

• Quality Assurance Engineer ensures that products or services meet the required quality standards.

• CAPA 8D is a problem-solving methodology used to identify, correct, and prevent recurring problems.

• Preventive action aims to prevent potential problems from occurring, while corrective action aims to correct existing problems.

• Quality ...read more

Optimization of cement refers to improving the quality and efficiency of cement production.

• Reducing the amount of clinker used in cement production

• Using alternative fuels and raw materials

• Improving the grinding process

• Controlling the chemical composition of raw materials

• Minimizing energy consumption

• Maximizing output while maintaining quality

• Ensuring compliance with industry standards and regulations

Non-conformities can be controlled without affecting financial terms by implementing effective corrective and preventive actions.

• Identify the root cause of the non-conformity

• Implement corrective and preventive actions to prevent recurrence

• Prioritize actions based on risk and impact

• Involve cross-functional teams to ensure effective solutions

• Monitor and measure the effectiveness of actions taken

• Continuously improve the process to prevent future non-conformities

QA QC stands for Quality Assurance and Quality Control.

• QA QC is a set of processes and activities that ensure the quality of a product or service.

• Quality Assurance focuses on preventing defects and ensuring that processes are followed correctly.

• Quality Control involves inspecting and testing the product or service to identify defects and ensure it meets the required standards.

• QA QC is important in various industries such as manufacturing, construction, software development, a...read more

The price of a particular grade of concrete (RMC) varies depending on several factors such as location, quantity, and grade.

• The price of RMC is influenced by the location of the project.

• The quantity of RMC required also affects the price.

• The grade of RMC needed for the project is a significant factor in determining the price.

• The price of RMC can range from $80 to $150 per cubic meter depending on the above factors.

SS316 has higher corrosion resistance and strength compared to SS304.

• SS316 contains molybdenum which enhances its corrosion resistance, while SS304 does not.

• SS316 is more suitable for use in harsh environments like marine applications, while SS304 is more commonly used in indoor settings.

• SS316 has higher tensile strength and creep strength than SS304.

Yes, it is possible for bug creation and rectification to be done on the same day.

• It depends on the severity of the bug.

• If it is a minor bug, it can be fixed on the same day.

• If it is a major bug, it may take longer to fix.

• The bug should be properly documented and tested before being fixed.

• The fix should also be properly tested before being deployed.

5S principles are Sort, Set in order, Shine, Standardize, and Sustain. Quality is important to ensure customer satisfaction and business success.

• Sort - eliminate unnecessary items to improve efficiency

• Set in order - organize items for easy access and productivity

• Shine - maintain cleanliness and prevent defects

• Standardize - establish consistent processes for quality control

• Sustain - continuously improve and maintain the 5S principles

• Quality is important to meet customer expect...read more

Explanation on calculating normality, molarity, molecular weight and number of bondings in chemical formula.

• Normality is the number of equivalents of a solute per liter of solution. It is calculated by dividing the number of equivalents by the volume of the solution in liters.

• Molarity is the number of moles of a solute per liter of solution. It is calculated by dividing the number of moles by the volume of the solution in liters.

• Molecular weight is the sum of the atomic weigh...read more

The grade of concrete refers to its strength and durability.

• Grade of concrete is denoted by a number followed by 'M' which stands for mix.

• The number represents the compressive strength of the concrete in megapascals (MPa).

• For example, M20 grade concrete means the compressive strength is 20 MPa.

• Different grades of concrete are used for different purposes, such as M10 for non-structural purposes and M40 for heavy-duty structures.

The tolerance of sand bulkage refers to the acceptable variation in the volume of sand when it is compacted.

• Tolerance of sand bulkage is typically expressed as a percentage.

• It is important to measure and control sand bulkage to ensure consistency in construction materials.

• The acceptable tolerance may vary depending on the specific application and industry standards.

• For example, in concrete production, the tolerance for sand bulkage may be around 2-3%.

• Regular testing and monit...read more

A high risk bug is a severe issue that can cause major problems in the system.

• A high risk bug can cause system crashes or data loss.

• In terms of audio and video files, a high risk bug could be a corrupted file that cannot be played or a file that causes the media player to crash.

• High risk bugs should be prioritized and fixed immediately to prevent further damage to the system.

Type A, B, and C circuit breakers are categorized based on their trip characteristics.

• Type A circuit breakers trip when the current exceeds 3 to 5 times the rated current.

• Type B circuit breakers trip when the current exceeds 5 to 10 times the rated current.

• Type C circuit breakers trip when the current exceeds 10 to 20 times the rated current.

• Type A and B circuit breakers are commonly used in residential and commercial applications, while Type C is used in industrial settings....read more

Pneumatic items are devices that use compressed air to perform tasks. Defects in products can be identified through inspection and testing. Problem-solving involves troubleshooting and implementing corrective actions.

• Pneumatic items use compressed air to operate machinery or perform tasks.

• Defects in products can be identified through visual inspection, functional testing, or performance evaluation.

• Common defects in pneumatic products include air leaks, faulty valves, pressure...read more

I follow the specifications outlined in ASTM D3515 and AASHTO M320 for preparing mix designs of bituminous.

• Follow ASTM D3515 for designing hot mix asphalt (HMA) mixtures

• Follow AASHTO M320 for designing asphalt mixtures using performance-based tests

• Consider factors such as traffic volume, climate, and pavement condition when selecting mix design specifications

Concrete design mix and minimum cement content are determined by the applicable code.

• Concrete design mix is determined based on the required strength and durability of the structure.

• Minimum cement content is specified by the code to ensure adequate strength and durability.

• For example, ACI 318 specifies a minimum cement content of 564 kg/m3 for concrete with a compressive strength of 28 MPa.

• Other factors such as water-cement ratio, aggregate type and size, and admixtures also ...read more

Frequency tests of construction material as per CPWD

• Frequency tests of construction material are conducted as per the guidelines provided by CPWD (Central Public Works Department).

• The frequency of tests depends on the type of material and its intended use in the construction project.

• CPWD provides specific guidelines for different materials such as cement, aggregates, concrete, steel, etc.

• The tests may include compressive strength tests, water absorption tests, sieve analysis,...read more

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 compliance with standards and specifications

The design mix of a particular grade of concrete depends on the required strength and other factors.

• The design mix includes the proportion of cement, sand, aggregates, and water.

• For example, the design mix for M20 grade concrete is 1:1.5:3 (cement:sand:aggregates) with a water-cement ratio of 0.5.

• The design mix is determined by conducting trials and tests on the materials used.

• The mix should be adjusted based on factors such as the type of aggregates, temperature, and humidit...read more

If 02 pieces pass or 01 falls within +10mm tolerance of cover block, it is considered a sample pass.

• A tolerance of +10mm is allowed for cover block.

• If 02 pieces pass or 01 falls within the tolerance limit, it is considered a sample pass.

• If more than 01 piece falls outside the tolerance limit, it is considered a sample fail.

Durability of concrete depends on various factors such as quality of materials, mix design, curing, and environmental conditions.

• Durability is the ability of concrete to resist weathering action, chemical attack, and abrasion.

• Factors affecting durability include water-cement ratio, air content, aggregate quality, and curing conditions.

• Concrete with low water-cement ratio and proper curing can have a lifespan of over 100 years.

• Environmental conditions such as freeze-thaw cycle...read more

Engineering drawing is a graphical representation of an object or structure used to communicate design details.

• Types of views include front, top, side, isometric, and orthographic

• Engineering drawings use standard symbols and conventions to convey information

• Drawings may include dimensions, tolerances, and notes to clarify design intent

• Understanding engineering drawings is essential for QA QC Engineers to ensure products meet specifications

My job role as a QA QC Engineer has made me technically sound by providing me with in-depth knowledge of mechanical properties of alloys and testing methods.

• Regularly conducting tests on various alloys to determine their mechanical properties such as strength, hardness, and ductility

• Utilizing testing methods such as tensile testing, hardness testing, impact testing, and metallography to assess the quality of alloys

• Analyzing test results to ensure that alloys meet specified st...read more

Validation and verification are quality assurance techniques used to ensure that a product meets its requirements.

• Validation ensures that the product meets the customer's needs and intended use.

• Verification ensures that the product meets the specified requirements and standards.

• Smoke testing is a type of validation testing that checks if the basic functionalities of the product are working.

• Smoke testing is usually done before more comprehensive testing is carried out.