1500+ Quality Engineer Interview Questions and Answers

Quality engineers are responsible for ensuring products meet quality standards through testing, analysis, and process improvement.

• Developing and implementing quality control systems

• Conducting tests and inspections to identify defects

• Analyzing data to improve processes and reduce defects

• Collaborating with production teams to address quality issues

• Training staff on quality standards and procedures

7 QC tools are problem-solving techniques used in quality control. PPAP documents are used in automotive industry for product approval.

• 7 QC tools include Pareto chart, fishbone diagram, control chart, histogram, scatter diagram, flowchart, and check sheet

• PPAP documents are Production Part Approval Process documents used in automotive industry for product approval

• PPAP documents include design records, engineering change documents, process flow diagrams, control plans, and meas...read more

The ratio of M20 refers to the mix proportion of concrete with a compressive strength of 20 megapascals (MPa).

• M20 is a commonly used grade of concrete in construction.

• The ratio of M20 typically refers to the proportion of cement, sand, and aggregate used in the mix.

• The specific ratio may vary depending on the requirements and specifications of the project.

• For example, a common ratio for M20 concrete is 1:1.5:3, which means 1 part cement, 1.5 parts sand, and 3 parts aggregate ...read more

Dimensions check of job through micrometer and V.C.

• Micrometer and V.C. are precision measuring tools used to check the dimensions of a job.

• Micrometer measures the outside diameter of a job while V.C. measures the inside diameter.

• The readings obtained from these tools are compared with the specified dimensions to ensure quality.

• Regular calibration of these tools is necessary to maintain accuracy.

• Proper handling and storage of these tools is important to prevent damage.

6 sigma is a statistical measure of quality that aims to achieve 3.4 defects per million opportunities. PPM stands for parts per million.

• 6 sigma is a methodology used to improve quality by reducing defects and variability in processes

• It aims to achieve a level of quality where there are only 3.4 defects per million opportunities

• PPM is a unit of measurement used to express the number of defective parts per million produced

• It is often used in manufacturing and engineering indus...read more

UTS is the maximum stress a material can withstand before breaking, while yield strength is the stress at which a material begins to deform plastically.

• UTS stands for Ultimate Tensile Strength

• Yield strength is also known as the yield point

• UTS is the maximum stress a material can withstand before breaking

• Yield strength is the stress at which a material begins to deform plastically

• Yield strength is always lower than UTS

• Both UTS and yield strength are important factors in determ...read more

Wheel balancing is the process of equalizing the weight of a tire and wheel assembly so that it spins smoothly at high speeds.

• It involves adding or removing weights to the wheel to balance it

• Unbalanced wheels can cause vibrations, uneven tire wear, and steering issues

• It is important to balance wheels regularly, especially after getting new tires or wheels

• Examples of wheel balancing equipment include wheel balancers and vibration analyzers

The code followed for DPT acceptance is ASME Y14.5.

• ASME Y14.5 is the code used for Geometric Dimensioning and Tolerancing (GD&T) in engineering drawings.

• It provides guidelines for defining and interpreting GD&T symbols and tolerances.

• ASME Y14.5 ensures consistent and accurate communication of engineering requirements.

• It is widely accepted in industries such as manufacturing, aerospace, and automotive.

• Using ASME Y14.5 helps ensure quality and precision in engineering designs a...read more

Production issue of material holes could be due to manufacturing defects, improper handling, or design flaws.

• Possible manufacturing defects in the material causing holes

• Improper handling during production leading to holes in the material

• Design flaws in the production process resulting in material holes

Yes, I have knowledge of Core tools.

• I am familiar with tools such as FMEA, Control Plans, SPC, MSA, and PPAP.

• I have used these tools to ensure quality standards are met in manufacturing processes.

• I have experience in implementing these tools to improve product quality and reduce defects.

• I have received training on how to effectively use Core tools in quality engineering.

The Lathe machine Tool is typically placed at a specific angle based on the type of operation being performed.

• The angle of the Lathe machine Tool is determined by the type of material being worked on and the desired outcome of the operation.

• For turning operations, the tool is usually placed at a 90-degree angle to the workpiece.

• For facing operations, the tool is placed parallel to the workpiece.

• Different angles may be used for specific operations such as threading or grooving...read more

I investigate a quality issue by gathering data, analyzing root causes, implementing corrective actions, and monitoring results.

• Gather relevant data and documentation related to the quality issue

• Analyze the data to identify potential root causes of the issue

• Develop and implement corrective actions to address the root causes

• Monitor the effectiveness of the corrective actions and make adjustments as needed

The number of tests for modified bitumen can vary depending on the specific requirements and standards of the project.

• The number of tests for modified bitumen may include tests for physical properties, chemical composition, durability, and performance under various conditions.

• Common tests for modified bitumen include penetration test, softening point test, ductility test, and viscosity test.

• The specific number of tests required for modified bitumen can be determined by the pr...read more

There are several types of physical tests that can be conducted on cement to ensure quality and performance.

• Setting time test

• Soundness test

• Fineness test

• Compressive strength test

• Specific gravity test

The least count of a dial vernier caliper is the smallest measurement that can be read on the scale.

• The least count is determined by the number of divisions on the main scale and the number of divisions on the vernier scale.

• To calculate the least count, divide the smallest division on the main scale by the total number of divisions on the vernier scale.

• For example, if the smallest division on the main scale is 0.1 mm and the vernier scale has 10 divisions, the least count wou...read more

Yes, I am willing to travel frequently for this job.

• I understand that travel is a requirement for this position and I am prepared to make the necessary arrangements.

• I have experience traveling for work in my previous roles and am comfortable with the logistics involved.

• I am excited about the opportunity to visit different locations and work with diverse teams.

• I am willing to adjust my schedule and work outside of regular business hours to accommodate travel needs.

Various types of testing are performed on site and in factory, including functional, performance, regression, and acceptance testing.

• Functional testing ensures that the product meets the specified requirements.

• Performance testing checks the product's speed, scalability, and stability under various loads.

• Regression testing ensures that changes or updates to the product do not negatively impact existing functionality.

• Acceptance testing involves testing the product with end-user...read more

Volume, area & surface area of cube, sphere & cylinder are important geometric calculations.

• Volume of cube = side length^3

• Area of cube = 6 * side length^2

• Surface area of cube = 6 * side length^2

• Volume of sphere = (4/3) * π * radius^3

• Area of sphere = 4 * π * radius^2

• Surface area of sphere = 4 * π * radius^2

• Volume of cylinder = π * radius^2 * height

• Area of cylinder = 2 * π * radius * (radius + height)

• Surface area of cylinder = 2 * π * radius * (radius + height)

One point lesson in Ncc parts is a concise and easy-to-understand instruction on how to improve quality and productivity.

• It is a single-page document that summarizes a specific improvement idea.

• It is used to train employees and ensure consistent implementation of best practices.

• Examples include reducing defects, improving cycle time, and increasing efficiency.

• It is an effective tool for continuous improvement in manufacturing processes.

The welding procedure for P91 material involves preheating, maintaining interpass temperature, and post-weld heat treatment.

• P91 material is a type of high-strength, low-alloy steel used in high-temperature applications.

• The welding procedure for P91 material typically includes preheating the base metal to a specific temperature range.

• Interpass temperature control is crucial to prevent cracking and maintain the mechanical properties of the weld.

• Post-weld heat treatment is neces...read more

To solve problems in internal rejection, identify root causes, implement corrective actions, and continuously monitor and improve processes.

• Identify root causes of internal rejection through data analysis and process evaluation.

• Implement corrective actions to address identified issues, such as training, process changes, or equipment upgrades.

• Establish a system for monitoring internal rejection rates and track improvements over time.

• Involve cross-functional teams in problem-so...read more

Handling multiple windows in Selenium involves switching between windows and using window handles.

• Use getWindowHandles() method to get all window handles

• Switch between windows using switchTo().window() method

• Perform actions on the desired window

• Close or quit windows as needed

Our company manufactures high-quality automotive parts for various vehicles.

• Specializes in producing components such as engine parts, suspension systems, and braking systems

• Works closely with automotive manufacturers to meet specific requirements and standards

• Utilizes advanced technology and quality control measures to ensure precision and durability

• Examples: engine pistons, shock absorbers, brake pads

Technical documentation in Quality control includes procedures, work instructions, specifications, test methods, and records.

• Procedures outline the steps to be followed for quality control processes.

• Work instructions provide detailed instructions on how to perform specific tasks.

• Specifications define the requirements that a product or process must meet.

• Test methods describe the methods used to test product quality.

• Records document the results of quality control activities for...read more

8D reports and core tools are problem-solving methodologies used in quality engineering.

• 8D reports are structured problem-solving methodologies used to identify, correct, and prevent problems.

• Core tools are a set of techniques and methodologies used to ensure product and process quality.

• Core tools include FMEA, PPAP, MSA, SPC, and APQP.

• FMEA is used to identify and mitigate potential failures in a product or process.

• PPAP is used to ensure that suppliers have met all customer r...read more

Supplier improvement can be achieved through collaboration, feedback, and performance monitoring.

• Establish clear communication channels with suppliers to provide feedback on areas of improvement.

• Implement regular performance evaluations to track supplier quality and delivery metrics.

• Collaborate with suppliers to identify root causes of issues and work together on corrective actions.

• Provide training and resources to suppliers to help them meet quality standards.

• Consider divers...read more

The chances of finding a great white depend on the location and time of year.

• Great whites are commonly found in coastal areas with cooler water temperatures.

• They are more likely to be spotted during their feeding season, which varies by location.

• The chances of encountering a great white while swimming or surfing are relatively low.

• However, if you are actively seeking them out on a shark diving expedition, your chances are higher.

There are several types of transformer testing including routine, type, special, and field testing.

• Routine testing is done during the manufacturing process to ensure the transformer meets standard specifications.

• Type testing is done on a sample transformer to ensure it meets specific requirements before being put into service.

• Special testing is done on transformers that have been in service for a long time or have undergone repairs or modifications.

• Field testing is done on tr...read more

To draw a particular component in AutoCAD, you can use the various drawing tools and commands available in the software.

• Open AutoCAD software and create a new drawing file.

• Use the Line, Circle, Arc, and other drawing tools to sketch the component.

• Use the Modify tools to edit and refine the drawing as needed.

• Add dimensions and annotations to accurately represent the component.

• Save the drawing file in the desired format for future reference.

A fishbone diagram is a visual tool used to identify and organize potential causes of a problem or effect.

• Also known as Ishikawa diagram or cause-and-effect diagram

• Categories of potential causes are represented as branches off the main spine

• Helps in identifying root causes of a problem

• Commonly used in quality management and process improvement

Visual inspection is a method of evaluating the quality of a product or process by visually examining it.

• Visual inspection involves using the human eye to detect defects, flaws, or deviations from the desired standards.

• It is a non-destructive testing method that can be performed at various stages of production or during final inspection.

• Visual inspection can be aided by tools such as magnifying glasses, microscopes, or cameras.

• Examples of visual inspection include checking fo...read more

Quality is the degree to which a product or service meets or exceeds customer expectations.

• Quality is about meeting or exceeding customer expectations.

• It is the degree to which a product or service fulfills its intended purpose.

• Quality is achieved through consistent and reliable processes.

• It involves continuous improvement and prevention of defects.

• Quality can be measured through various metrics such as customer satisfaction, defect rates, and process capability.

• Examples of q...read more

Slump can be managed by adjusting the water content and adding admixtures as per client requirements.

• Adjust water content to increase or decrease slump

• Add admixtures like plasticizers or superplasticizers to increase or decrease slump

• Test slump regularly to ensure it meets client requirements

• Document all adjustments made to slump for quality control purposes

BR stands for Brake Resistor in E 250 BR.

• BR is an abbreviation for Brake Resistor.

• It is used in E 250 BR, which is a type of electric motor.

• The Brake Resistor is used to dissipate the energy generated by the motor when it is stopped.

• This prevents damage to the motor and other components.

• Examples of applications where E 250 BR might be used include conveyor belts, cranes, and hoists.

Boilers are classified into different types based on their design, fuel type, and usage.

• Fire-tube boilers

• Water-tube boilers

• Electric boilers

• Gas boilers

• Oil boilers

• Solid fuel boilers

• Condensing boilers

• Combi boilers

The five core tools are a set of quality management tools used in various industries.

• The five core tools are: APQP (Advanced Product Quality Planning), PPAP (Production Part Approval Process), FMEA (Failure Mode and Effects Analysis), MSA (Measurement System Analysis), and SPC (Statistical Process Control).

• These tools are used to ensure product and process quality, identify and prevent potential issues, and improve overall quality performance.

• For example, APQP is used to plan...read more

Quality assurance is the process of ensuring that products or services meet specified requirements and standards.

• Quality assurance involves establishing and implementing processes to prevent defects and errors.

• It includes activities such as planning, designing, and executing tests to verify product quality.

• Quality assurance also involves monitoring and evaluating processes to identify areas for improvement.

• Examples of quality assurance techniques include statistical process c...read more

A quality inspector is responsible for ensuring that products or services meet specified quality standards.

• Quality inspectors perform inspections and tests on products or services to identify any defects or deviations from quality standards.

• They use various tools and techniques such as visual inspections, measurements, and testing equipment to assess quality.

• Quality inspectors may also review documentation and records to ensure compliance with quality procedures and regulatio...read more

The carbon percent in carbon steel varies from 0.05% to 2.0% depending on the grade.

• Carbon steel is an alloy of iron and carbon.

• The amount of carbon in carbon steel determines its strength and hardness.

• Low carbon steel has less than 0.3% carbon, while high carbon steel has more than 0.6% carbon.

• Examples of carbon steel grades include ASTM A36, SAE 1045, and AISI 1095.

8D and CAPA are problem-solving methodologies used in quality management.

• 8D stands for 8 Disciplines and is used to identify, correct and prevent problems

• CAPA stands for Corrective and Preventive Action and is used to identify and eliminate the root cause of a problem

• Both methodologies involve a structured approach to problem-solving and require documentation of the process and results

• They are commonly used in industries such as manufacturing, automotive, and healthcare

The least count of micrometer is the smallest measurement that can be read on the micrometer scale.

• The least count of micrometer is typically 0.01 mm or 0.001 cm.

• It can be calculated by dividing the pitch of the screw by the number of divisions on the thimble.

• For example, if the pitch is 0.5 mm and there are 50 divisions on the thimble, the least count would be 0.01 mm.

• The least count is important for accurate measurements and should be considered when using a micrometer.

GD&T stands for Geometric Dimensioning and Tolerancing. It is a system for defining and communicating engineering tolerances.

• GD&T is used to specify the allowable variations in form, size, and orientation of features on a part.

• It helps ensure that parts fit together properly and function as intended.

• GD&T uses symbols, such as concentricity, flatness, and perpendicularity, to communicate tolerance requirements.

• It is commonly used in engineering drawings and manufacturing proce...read more

Corrective and preventive actions are taken when nonconformities are identified or potential issues are anticipated.

• Corrective actions are taken after a nonconformity has occurred to prevent its recurrence.

• Preventive actions are taken to prevent potential issues from occurring in the future.

• Corrective actions address root causes, while preventive actions focus on potential risks.

• Examples of corrective actions include retraining employees, updating procedures, or implementing ...read more

To reduce rejection, focus on improving quality control measures, enhancing employee training, and implementing effective problem-solving techniques.

• Implement robust quality control measures to identify and rectify defects early on.

• Enhance employee training programs to ensure they have the necessary skills and knowledge to produce high-quality products.

• Implement effective problem-solving techniques, such as root cause analysis, to identify and address the underlying causes of...read more

Precision refers to the closeness of measurements to each other, while accuracy refers to the closeness of measurements to the true value.

• Precision is about consistency and reproducibility of measurements.

• Accuracy is about how close measurements are to the true value.

• A diagram can show a target with multiple shots clustered closely together (precision) but not necessarily near the bullseye (accuracy).

GD&T stands for Geometric Dimensioning and Tolerancing. It is a system used to define and communicate engineering tolerances.

• GD&T is a symbolic language used to specify the dimensions, tolerances, and geometric characteristics of a part

• It helps ensure that parts are manufactured and assembled correctly, leading to improved quality and functionality

• GD&T uses symbols, such as concentricity, perpendicularity, and flatness, to define the allowable variations in a part's geometry

• I...read more

Steel is an alloy of iron and carbon, while stainless steel is a type of steel with added chromium for corrosion resistance. Types of steel include carbon steel, alloy steel, and tool steel.

• Steel is an alloy of iron and carbon

• Stainless steel contains chromium for corrosion resistance

• Types of steel include carbon steel, alloy steel, and tool steel