1500+ Quality Engineer Interview Questions and Answers

Different types of inspection instruments include calipers, micrometers, gauges, rulers, and optical comparators.

• Calipers - used for measuring the distance between two opposite sides of an object.

• Micrometers - used for measuring very small distances or thicknesses.

• Gauges - used for checking the dimensions of an object against a standard.

• Rulers - used for measuring lengths or distances.

• Optical comparators - used for magnifying and inspecting small parts for defects.

Reading technical drawings involves understanding symbols, dimensions, tolerances, and material specifications.

• Start by identifying the title block for important information such as part number, revision, and scale.

• Understand the different types of lines (e.g. hidden, center, dimension) and their meanings.

• Interpret symbols such as geometric tolerancing, surface finish, and welding.

• Pay attention to dimensions, tolerances, and material specifications for accurate manufacturing....read more

QA focuses on preventing defects in the process, while QC focuses on identifying defects in the product.

• QA is process oriented, focusing on preventing defects by establishing processes and standards.

• QC is product oriented, focusing on identifying defects through inspections and testing.

• QA involves activities like process audits, training, and documentation reviews.

• QC involves activities like product inspections, testing, and sampling.

• Example: QA would involve creating a check...read more

GD&T stands for Geometric Dimensioning and Tolerancing. The 7 QC tools are used for quality control, and the 5 core tools are used for quality engineering.

• GD&T is a system of symbols and rules used to define and communicate engineering tolerances.

• It ensures that parts and assemblies are manufactured and inspected correctly.

• The 7 QC tools are: Pareto Chart, Cause and Effect Diagram, Check Sheet, Control Chart, Histogram, Scatter Diagram, and Stratification.

• These tools help ide...read more

Calibration ensures accuracy of measurement devices, while validation ensures that a process or system meets requirements.

• Calibration involves adjusting a device to ensure it provides accurate measurements.

• Validation involves testing a process or system to ensure it meets predetermined requirements or specifications.

• Calibration is typically done on measurement devices such as thermometers, scales, and gauges.

• Validation is typically done on processes or systems such as manufac...read more

Precision is better for process accuracy as it focuses on consistency and repeatability.

• Precision ensures that measurements or results are consistently close to each other.

• Accuracy refers to how close a measurement is to the true value.

• A process can be precise but not accurate if the measurements are consistently off by the same amount.

• For example, in manufacturing, precision is crucial for ensuring consistent product quality.

• Accuracy is important in fields like medicine wher...read more

8D is a problem-solving methodology used in quality management to identify, correct, and prevent recurring problems.

• 8D stands for 8 disciplines, each representing a step in the problem-solving process.

• Containment action is taken in the 2nd discipline of 8D to prevent the issue from causing further problems.

• Examples of containment actions include implementing temporary fixes, isolating affected products, and stopping production of defective parts.

MSA is implemented in automotive industry to ensure the accuracy and reliability of measurement systems.

• To ensure the quality and consistency of products in automotive manufacturing

• To identify and eliminate sources of variation in measurement processes

• To meet customer requirements and industry standards

• To improve overall process efficiency and reduce waste

• Examples: Using MSA to validate the accuracy of testing equipment for engine components

Cut the cake into quarters in the first attempt, then stack the quarters and cut them in half in the second attempt, resulting in 8 pieces.

• Cut the cake into quarters in the first attempt

• Stack the quarters on top of each other and cut them in half in the second attempt

• You will have 8 pieces of cake after the third attempt

I follow the ISO 9001:2015 code for quality management systems.

• ISO 9001:2015 is an international standard for quality management systems.

• It provides a framework for organizations to consistently meet customer requirements and enhance customer satisfaction.

• The standard focuses on process improvement, risk management, and continuous monitoring and evaluation.

• By following ISO 9001:2015, I ensure adherence to best practices and drive quality improvement in my work.

The previous employer manufactured centrifugal pumps.

• The centrifugal pumps were used for various applications such as water supply, irrigation, and chemical processing.

• The pumps were designed to handle different flow rates and pressures.

• The materials used for the pumps varied depending on the application and included stainless steel, cast iron, and plastic.

• The pumps were tested for performance and durability before being shipped to customers.

PVC - Polyvinyl Chloride, HDPE - High-Density Polyethylene, LDPE - Low-Density Polyethylene, MDPE - Medium-Density Polyethylene

• PVC is a synthetic plastic polymer used in construction, healthcare, and packaging industries

• HDPE is a thermoplastic made from petroleum used in packaging, construction, and automotive industries

• LDPE is a flexible plastic used in packaging, agriculture, and construction industries

• MDPE is a type of polyethylene used in gas pipes, packaging, and films

• Me...read more

I will ensure clear communication channels are established with remote management and implement effective quality control measures.

• Establish clear communication channels with remote management

• Implement effective quality control measures

• Ensure all team members are aware of quality standards and expectations

• Regularly review and assess quality control processes

• Utilize technology and software to aid in quality control

• Maintain detailed documentation of quality control processes an...read more

The number of defects in a wiring harness varies depending on various factors.

• The number of defects in a wiring harness can be influenced by factors such as manufacturing processes, quality control measures, and the complexity of the harness.

• Defects in wiring harnesses can include issues such as faulty connections, insulation damage, or incorrect wiring.

• The number of defects can be minimized through thorough testing, inspections, and adherence to industry standards and regula...read more

PLC stands for Programmable Logic Controller. It is a digital computer used for automation of electromechanical processes.

• PLC is used to control and monitor industrial processes.

• It is programmed using ladder logic or other programming languages.

• PLC can be used for various applications such as controlling traffic lights, assembly lines, and HVAC systems.

• It can communicate with other devices and systems through various communication protocols.

• PLC has replaced traditional relay-...read more

Grain structures of steel change at different temperatures affecting its properties.

• At room temperature, steel has a fine grain structure which provides good strength and toughness.

• As temperature increases, the grain size also increases, leading to reduced strength and toughness.

• At high temperatures, steel can have a coarse grain structure which may result in lower mechanical properties.

• Grain refinement techniques like controlled rolling can be used to improve the properties ...read more

The final/finished product temperature of Rebar is typically room temperature.

• Rebar is typically stored and used at room temperature

• The temperature of Rebar can vary depending on the environment it is stored in

• Rebar is not typically heated or cooled as part of the manufacturing process

Verification and Validation are two important processes in software testing. Smoke testing is a preliminary test to check if the basic functionalities of the software are working. Monkey testing is a random testing technique. Severity and priority are used to classify the impact and importance of a defect.

• Verification ensures that the software meets the requirements specified in the design phase, while validation ensures that the software meets the customer's needs.

• Smoke test...read more

Mix design is the process of determining the proportions of cement, water, aggregates, and admixtures in concrete to achieve desired properties.

• Determine the required strength and durability of the concrete

• Select suitable materials such as cement, aggregates, water, and admixtures

• Calculate the proportions of each material based on desired properties and specifications

• Perform trial mixes to test the properties of the concrete

• Adjust the mix design as needed to meet project requ...read more

There are various types of materials, with HR (Hot Rolled) and CR (Cold Rolled) being two common types in engineering.

• Types of materials include metals, plastics, ceramics, composites, etc.

• HR (Hot Rolled) materials are processed at high temperatures, making them easier to shape but less precise in dimensions.

• CR (Cold Rolled) materials are processed at room temperature, resulting in higher strength and better surface finish.

• Examples of HR materials include HR steel, while exam...read more

Different types of welding include MIG, TIG, stick, and flux-cored welding, each with unique characteristics and applications.

• MIG (Metal Inert Gas) welding uses a wire electrode and shielding gas to create a strong bond between metals.

• TIG (Tungsten Inert Gas) welding uses a non-consumable tungsten electrode and inert gas to produce high-quality welds.

• Stick welding, also known as Shielded Metal Arc Welding (SMAW), uses a flux-coated electrode to create welds in various positio...read more

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

• D1: Establish the team and define the problem

• D2: Describe the problem in detail

• D3: Develop an interim containment action

• D4: Identify root cause and verify it

• D5: Choose and verify permanent corrective actions

• D6: Implement and validate corrective actions

• D7: Prevent recurrence and recognize the team

• D8: Celebrate the success and share the knowledge

Process quality ensures consistency, efficiency, and compliance, leading to better products and customer satisfaction.

• Consistency: High process quality leads to uniformity in product output, reducing variability. For example, in manufacturing, consistent assembly line processes ensure that each product meets the same standards.

• Efficiency: Streamlined processes minimize waste and reduce production time. For instance, implementing Lean methodologies can significantly cut down o...read more

Constructing a cast pier involves preparing the site, setting up formwork, pouring concrete, and curing the pier.

• Prepare the site by clearing the area and ensuring proper soil compaction.

• Set up formwork to shape the pier and hold the concrete in place during pouring.

• Pour concrete into the formwork, making sure it is properly mixed and compacted.

• Allow the concrete to cure and gain strength before removing the formwork.

• Inspect the pier for quality and structural integrity befor...read more

Implemented various Continuous Improvement activities including process optimization and defect reduction.

• Implemented Lean Six Sigma projects to reduce defects in production processes

• Conducted root cause analysis to identify areas for improvement

• Introduced new quality control measures to enhance product quality

• Collaborated with cross-functional teams to streamline workflows and reduce waste

Before casting a pier, aspects such as design specifications, material quality, formwork, reinforcement, and curing process should be checked.

• Check design specifications to ensure the pier meets structural requirements

• Verify the quality of materials used for casting the pier

• Inspect the formwork to ensure it is properly constructed and aligned

• Check the reinforcement placement and spacing for adequate strength

• Ensure proper curing process is followed to prevent cracks and achiev...read more

GD&T stands for Geometric Dimensioning and Tolerancing. It is a system of symbols and rules used to specify the geometry and allowable variation of parts.

• GD&T is used to communicate design intent and ensure parts are manufactured to the correct specifications.

• It includes symbols for features such as flatness, perpendicularity, and concentricity.

• GD&T can also be used to specify tolerances for measurements such as distance, angle, and roundness.

• It is commonly used in industries...read more

The humidity level during the cement consistency test should be maintained at around 50-70%.

• Ideal humidity level for cement consistency test is 50-70%

• High humidity can lead to faster setting time of cement

• Low humidity can lead to longer setting time of cement

Yes, I can create reports on quality checks of manufactured goods.

• I have experience in using various quality control tools and techniques to conduct quality checks on manufactured goods.

• I can use statistical process control charts, Pareto charts, and fishbone diagrams to analyze the data collected during quality checks.

• I can create reports that summarize the findings of the quality checks and provide recommendations for improvement.

• For example, in my previous role as a Qualit...read more

The 7 QC tools, TQM, problem-solving methodology, 5S, and SQC are all quality management techniques used to improve processes and products.

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

• TQM is a management approach that focuses on continuous improvement and customer satisfaction

• Problem-solving methodology involves identifying, analyzing, and solving problems using a structured approach

• 5S is a wor...read more

Shock absorbers are devices used in vehicles to absorb and dampen the impact of bumps and vibrations.

• Absorb and dampen the impact of bumps and vibrations

• Improve vehicle stability and control

• Enhance driver and passenger comfort

• Reduce wear and tear on other vehicle components

• Maintain tire contact with the road surface

• Prevent excessive bouncing and bouncing

• Provide consistent handling and braking

• Examples: coilover shocks, gas shocks, hydraulic shocks

First angle projection and Third angle projection are two different methods used in engineering drawings to represent 3D objects on a 2D plane.

• First angle projection is commonly used in Europe and Asia, while Third angle projection is commonly used in North America.

• In First angle projection, the object is placed in the first quadrant and the views are projected onto the planes surrounding the object.

• In Third angle projection, the object is placed in the third quadrant and the...read more

The faulty finding procedure for motor failure involves a systematic approach to identify and diagnose the cause of the failure.

• Start by gathering information about the motor failure, such as symptoms, error codes, and any recent changes or incidents.

• Perform visual inspections to check for any obvious signs of damage or malfunction, such as burnt components or loose connections.

• Conduct electrical tests to measure voltage, current, and resistance to identify any abnormalities ...read more

Heat treatments are processes used to alter the physical and mechanical properties of materials through heating and cooling.

• Annealing

• Quenching

• Tempering

• Normalizing

• Hardening

• Case hardening

Concrete is a versatile building material made of cement, water, and aggregates. It is used in construction for various structures.

• Concrete is a composite material composed of cement, water, and aggregates like sand or gravel.

• It is known for its strength, durability, and versatility in construction projects.

• Concrete can be used for building foundations, roads, bridges, dams, and other structures.

• It can also be used for decorative purposes like countertops, floors, and walls.

• P...read more

FMEA identifies potential failure modes, assesses their impact, and guides root cause analysis for effective problem-solving.

• Identify potential failure modes: List all possible ways a process or product can fail.

• Assess effects: Determine the impact of each failure mode on the system or end-user.

• Prioritize risks: Use a Risk Priority Number (RPN) to rank failure modes based on severity, occurrence, and detection.

• Conduct root cause analysis: For high-priority failure modes, inve...read more

Maintain the role of Quality and control Department by implementing robust quality management systems, continuous improvement initiatives, and regular audits.

• Implement robust quality management systems to ensure adherence to quality standards and regulations

• Promote a culture of quality within the organization through training and awareness programs

• Conduct regular audits and inspections to identify areas for improvement and ensure compliance

• Implement continuous improvement ini...read more

The main role of a quality engineer in the construction field is to ensure that all construction processes and materials meet quality standards and regulations.

• Ensuring compliance with building codes and regulations

• Conducting quality inspections and tests on construction materials and processes

• Identifying and resolving quality issues and defects

• Implementing quality control measures to improve overall construction quality

• Collaborating with project managers and contractors to a...read more

There are various types of welding electrodes used in different welding processes.

• Welding electrodes are classified based on their composition, coating, and current type.

• Common types of welding electrodes include E6010, E7018, and E308L.

• Different electrodes are used for specific applications such as mild steel, stainless steel, and aluminum welding.

• Some electrodes are designed for specific welding processes like shielded metal arc welding (SMAW) or gas tungsten arc welding (G...read more

Yes, I have my own transport facility.

• I own a car and can commute to work easily.

• I am comfortable with driving long distances if required.

• I can ensure timely arrival and departure from work.

• I can also use public transportation if needed.

The weight of 8 mm steel rod with 1 meter length.

• The weight of steel can be calculated using the formula: weight = volume × density

• To calculate the volume of a rod, use the formula: volume = π × (diameter/2)^2 × length

• The density of steel is typically around 7850 kg/m^3

• In this case, the diameter of the rod is 8 mm, which is equivalent to 0.008 meters

The 7QC tools are a set of problem-solving techniques used in quality management. PPAP stands for Production Part Approval Process.

• The 7QC tools are: check sheets, control charts, histograms, Pareto charts, scatter diagrams, cause-and-effect diagrams, and flowcharts.

• These tools help identify and analyze quality problems, and facilitate decision-making and problem-solving processes.

• PPAP is a standardized process used in the automotive industry to ensure that suppliers meet the...read more

QA focuses on preventing defects, while QC focuses on identifying and fixing defects.

• QA (Quality Assurance) is a proactive process that focuses on preventing defects by establishing and maintaining standards, processes, and procedures.

• QC (Quality Control) is a reactive process that focuses on identifying and fixing defects through inspections, testing, and analysis.

• QA is concerned with the overall quality of the product or service, ensuring that it meets the required standard...read more

GD&T stands for Geometric Dimensioning and Tolerancing. PPAP stands for Production Part Approval Process.

• GD&T is a system of symbols and rules used to specify the geometry of mechanical parts and assemblies.

• PPAP is a set of documents that demonstrate a supplier's ability to meet customer requirements and ensure consistent quality.

• GD&T helps ensure that parts fit together correctly and function properly.

• PPAP includes documents such as control plans, process flow diagrams, and ...read more

Glass is a solid material that is transparent, brittle, and has no definite shape or volume.

• Glass is made by melting silica, soda ash, and lime together at high temperatures.

• It is a good insulator and can be used for windows, lenses, and mirrors.

• Glass can be colored or clear, and can be shaped into various forms.

• It is fragile and can break easily, but can also be tempered to increase its strength.

• Glass is non-porous and does not absorb liquids or gases.

• It is also resistant to...read more

There are three types of parameters in Radiography: exposure parameters, image quality parameters, and patient-related parameters.

• Exposure parameters include kVp, mA, and exposure time.

• Image quality parameters include spatial resolution, contrast resolution, and noise.

• Patient-related parameters include patient positioning, patient size, and patient motion.

• Other parameters may include focal spot size, source-to-image distance, and image receptor type.

Joins in SQL are used to combine rows from two or more tables based on a related column between them.

• Joins in SQL include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN returns all rows from the right table and the matched rows from the left table.

• FULL JOIN returns rows when there is a match in one of the...read more