1500+ Quality Engineer Interview Questions and Answers

MSA is Measurement System Analysis used to assess the quality of a measurement system.

• MSA helps to identify the sources of variation in a measurement system.

• There are two types of MSA: Variable MSA and Attribute MSA.

• Variable data is continuous data that can be measured, while Attribute data is discrete data that can be counted.

• False and Miss rates are defined to calculate the accuracy of a measurement system.

• For example, if a measurement system is used to measure the length o...read more

The 7 QC tools are a set of problem-solving techniques used in quality management. They include Pareto analysis, X-chart and R-chart, why-why analysis, red bin analysis, and root cause analysis.

• Pareto analysis is a technique used to prioritize problems or causes based on their frequency or impact.

• X-chart and R-chart are statistical control charts used to monitor process variation and identify any out-of-control conditions.

• Why-why analysis is a method of repeatedly asking 'why...read more

The number of mangoes the monkey ate on the first day can't be determined with the given information.

• The question provides information about the monkey's apple consumption and the total number of mangoes eaten in 100 days.

• However, there is no direct information about the number of mangoes eaten on the first day.

• Without additional data or calculations, it is impossible to determine the exact number of mangoes eaten on the first day.

IATF audit is a quality management system audit for automotive suppliers. It was created to improve quality and reduce waste in the industry.

• IATF stands for International Automotive Task Force

• The audit is based on the ISO 9001 standard and includes additional requirements specific to the automotive industry

• The cause of IATF was to create a globally recognized quality management system for automotive suppliers

• The relationship between IATF and OEM companies is that OEMs require...read more

The question involves solving mathematical puzzles related to arranging objects and counting.

• For the calculator image, check for missing buttons, incorrect numbers, or distorted display.

• To arrange 10 pearls on a rectangle, place 2 pearls on each side and 2 pearls in each corner.

• To find a correct pair of socks, you need to take out 13 socks.

• To determine the number of men and horses, set up equations based on the number of heads and legs.

The types of defects I face in my parts include dimensional inaccuracies, surface imperfections, material flaws, and assembly errors.

• Dimensional inaccuracies: Parts not meeting specified measurements

• Surface imperfections: Scratches, dents, or blemishes on the surface

• Material flaws: Defects in the material composition or structure

• Assembly errors: Incorrectly assembled parts leading to functionality issues

There are several types of pipes used in water supply projects, including PVC, HDPE, copper, galvanized steel, and PEX.

• PVC pipes are commonly used due to their affordability, durability, and resistance to corrosion.

• HDPE pipes are known for their flexibility, high strength, and resistance to chemicals.

• Copper pipes are often used for indoor plumbing due to their excellent heat and corrosion resistance.

• Galvanized steel pipes are used in older water supply systems but are being p...read more

FoA, MoA, LoA are types of documents used in quality engineering.

• FoA stands for Field of Application, which defines the scope and limitations of a product or process.

• MoA stands for Method of Analysis, which outlines the procedures and techniques used to analyze a product or process.

• LoA stands for Limit of Acceptance, which specifies the acceptable range or criteria for a product or process.

• Other types of documents in quality engineering include SOPs (Standard Operating Proced...read more

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

• The least count is determined by the number of divisions on the micrometer scale and the pitch of the screw.

• It is usually expressed in micrometers or millimeters.

• For example, if a micrometer has 50 divisions on the scale and the pitch of the screw is 0.5 mm, the least count would be 0.01 mm (0.5 mm / 50 divisions).

A set of questions related to quality engineering concepts and practices.

• MIS (Management Information System) is a system that provides information to support decision-making in an organization, while MRM (Management Review Meeting) is a meeting where top management reviews the performance of the organization.

• QC (Quality Control) is a process that ensures products or services meet specified requirements, QA (Quality Assurance) is a process that ensures the quality of the produ...read more

Yes, I have experience in project monitoring and inspection of water supply projects.

• I have worked on multiple water supply projects where I was responsible for monitoring and inspecting the quality of the water supply.

• I have conducted regular inspections to ensure compliance with quality standards and regulations.

• I have implemented quality control measures to identify and address any issues or deficiencies in the water supply system.

• I have collaborated with engineers and tec...read more

To confirm the proper vertical alignment of Tubewell pipe lowering, measurements and visual inspections can be conducted.

• Measure the verticality of the pipe using a plumb bob or laser level.

• Inspect the pipe for any visible signs of misalignment or tilting.

• Compare the measurements and visual observations with the specified tolerances.

• Ensure that the pipe is securely anchored to prevent any movement or deviation from the desired alignment.

• Perform regular checks during the lower...read more

I regularly use Python in my work. I am certified in Six Sigma and Lean Manufacturing.

• Regularly use Python for scripting and automation tasks

• Certified in Six Sigma for process improvement

• Certified in Lean Manufacturing for optimizing production processes

Answering questions related to quality engineering and mechanical engineering.

• First angle and third angle symbol representation are used in engineering drawings to indicate the orientation of the object being drawn.

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

• Mechanical engineering is a branch of engineering that deals with the design, manufacturing, and maintenance of mechanical systems.

• Seven quality tools are Check Sheets, Control Charts, Histograms, P...read more

Answering questions related to quality engineering including 5S, 7QC tools, QC vs QA, GD&T, ISO standards, and measurement tools.

• 5S is a methodology for workplace organization and standardization

• 7QC tools include Pareto charts, cause-and-effect diagrams, control charts, etc.

• Sampling plan is a method for selecting a subset of items for inspection

• QC focuses on detecting and correcting defects, while QA focuses on preventing defects

• GD&T is a system for specifying and tolerancing...read more

The firing order of a 4 cylinder engine is 1-3-4-2.

• Firing order refers to the sequence in which each cylinder fires during the engine's cycle.

• The firing order is determined by the engine's design and can vary between different types of engines.

• In a 4 cylinder engine, the firing order is usually 1-3-4-2.

• This means that the first cylinder to fire is the one closest to the front of the engine, followed by the third cylinder, then the fourth, and finally the second.

7 QC tools, 5S, 8D, Papp, Kaizen, Poka-yoke, and SPC are quality management tools used to improve processes and reduce defects.

• 7 QC tools are a set of problem-solving tools used to identify and solve quality-related issues.

• 5S is a workplace organization method that improves efficiency and safety.

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

• Papp is a method used to analyze and improve processes.

• Kaizen is a continuous improvement meth...read more

Measuring instruments used in quality engineering include calipers, micrometers, gauges, and CMMs.

• Calipers are used to measure dimensions of objects with high precision.

• Micrometers are used to measure small distances or thicknesses with great accuracy.

• Gauges are used to check the conformity of a part to its specifications.

• Coordinate Measuring Machines (CMMs) are used to measure the geometrical characteristics of objects.

• Other measuring instruments include height gauges, profi...read more

Bukholz relay is a protective device used in oil-immersed transformers to detect the faults inside the transformer.

• Bukholz relay is installed in the oil conservator tank of the transformer.

• It detects the faults like overheating, overloading, and short circuits inside the transformer.

• It works on the principle of gas detection and oil flow detection.

• It sends an alarm signal to the control room in case of any fault detected.

• It also stops the transformer from further damage by tr...read more

Quality control, FMEA, CAPA, process control, BIS standards, IQC/PAC/OQC, sampling plan, CTQ/CTP are all important aspects of product launch.

• Quality control involves ensuring that a product meets the desired quality standards.

• FMEA (Failure Mode and Effects Analysis) is a systematic approach to identifying and preventing potential product failures.

• CAPA (Corrective and Preventive Action) is a process for identifying and addressing issues that arise during product development an...read more

Yes

• Yes, I am familiar with preparing checklists for every component of an item to be executed as per the RFP.

• I understand the importance of having a comprehensive checklist to ensure all requirements are met.

• I have experience in creating checklists for quality control processes and inspections.

• I am proficient in identifying critical components and their associated requirements.

• I can prioritize checklist items based on their significance and impact on quality.

• I am detail-orien...read more

Angle probe selection for rail inspection is based on the thickness of the rail, following the rule 90°-T.

• Angle probe selection depends on the thickness of the job

• For inspecting the head of the rail, a 45° angle probe is used

• For inspecting the web and foot of the rail, a 70° angle probe is used

• The rule for selecting the angle probe is 90°-T, where T is the thickness of the job

Occurrence FMEA is used to identify and prioritize potential failure modes based on their frequency of occurrence.

• Occurrence FMEA helps in identifying potential failure modes that occur frequently and prioritizing them for corrective action.

• It helps in reducing the risk of failure and improving product quality.

• CAPA (Corrective and Preventive Action) is a process used to identify, investigate, and correct problems that arise in a product or process.

• Customer relations are impro...read more

My approach to project management strategy is to prioritize clear communication, establish realistic goals, and continuously monitor progress.

• Prioritize clear and effective communication with all stakeholders

• Establish realistic and achievable goals and milestones

• Continuously monitor project progress and make necessary adjustments

• Implement quality control measures to ensure adherence to standards

• Regularly assess risks and develop contingency plans

• Encourage collaboration and te...read more

To save costs and sell products at a reasonable price while maintaining quality, we can optimize production processes, source materials efficiently, and minimize waste.

• Optimize production processes to reduce waste and increase efficiency

• Source materials efficiently by negotiating with suppliers for better prices

• Minimize waste by implementing lean manufacturing principles

• Invest in research and development to find innovative ways to use low-cost materials without compromising q...read more

TPM is a maintenance strategy to maximize equipment effectiveness. OEE measures production efficiency. CTCQ, IPQC, and CSR are quality control measures.

• TPM stands for Total Productive Maintenance and is a strategy to ensure equipment is always available and operating at maximum efficiency.

• OEE stands for Overall Equipment Effectiveness and is a measure of how efficiently equipment is being used in production.

• CTCQ stands for Critical to Customer Quality and is a measure of how ...read more

A Single village scheme consists of various components aimed at improving the quality of life in a single village.

• Infrastructure development

• Access to clean water and sanitation facilities

• Education and skill development

• Healthcare facilities

• Livelihood opportunities

• Social welfare programs

• Community empowerment

Corrective action is taken to address and resolve existing problems, while preventive action is taken to prevent potential problems from occurring.

• Corrective action focuses on addressing and resolving existing problems or nonconformities.

• Preventive action focuses on identifying and eliminating potential problems before they occur.

• Corrective action is reactive, while preventive action is proactive.

• Corrective action aims to prevent recurrence of the same problem, while preventi...read more

Checking the material involves inspecting its quality and conformance to specifications.

• Perform visual inspections to identify any defects or abnormalities in the material.

• Conduct physical tests to measure the material's properties such as strength, hardness, and durability.

• Use specialized equipment like spectrometers or microscopes to analyze the material's composition or structure.

• Compare the material against established standards or specifications to ensure it meets the re...read more

Toe in and toe out are terms used to describe the angle of the wheels on a vehicle.

• Toe in refers to the front of the wheels being closer together than the back of the wheels.

• Toe out refers to the front of the wheels being further apart than the back of the wheels.

• Toe in/out can affect the handling and tire wear of a vehicle.

• Proper alignment is important for safety and optimal performance.

Vernier caliper and micrometer are both precision measuring instruments, but they differ in their design and measurement range.

• Vernier caliper measures both internal and external dimensions with a range of 0-150mm or 0-6 inches.

• Micrometer measures thickness or outside dimensions with a range of 0-25mm or 0-1 inch.

• Vernier caliper uses a sliding scale and a vernier scale for measurement, while micrometer uses a screw mechanism.

• Micrometer provides more accurate measurements than...read more

SPC stands for Statistical Process Control. It is a method of quality control that uses statistical methods to monitor and control a process.

• SPC involves collecting and analyzing data to identify and reduce variation in a process

• It helps to ensure that a process is operating within its specified limits and is capable of producing consistent results

• Examples of SPC tools include control charts, histograms, and Pareto charts

• SPC is commonly used in manufacturing, but can also be ...read more

Quality during execution and material inspection at site is ensured through various processes.

• Conducting regular inspections and audits to identify any quality issues

• Implementing quality control measures to ensure adherence to specifications and standards

• Performing material testing and inspection to verify its quality

• Using quality management tools and techniques such as statistical process control

• Training and educating staff on quality requirements and best practices

• Documenti...read more

The connecting rod is a crucial component in an engine that connects the piston to the crankshaft.

• Transfers the linear motion of the piston to the rotational motion of the crankshaft

• Converts reciprocating motion into rotational motion

• Provides a link between the piston and the crankshaft

• Helps in transmitting power from the piston to the crankshaft

• Acts as a lever to amplify the force exerted by the piston

• Plays a role in balancing the engine's reciprocating and rotating masses

Incoming, Inprocess and P.D.I are quality control stages in manufacturing process.

• Incoming quality control involves inspection of raw materials or components before they are used in production.

• Inprocess quality control involves inspection of products during the manufacturing process to ensure they meet quality standards.

• P.D.I (Pre-Delivery Inspection) is the final quality control stage where finished products are inspected before they are shipped to customers.

• These quality co...read more

Answers to various technical questions related to quality engineering.

• Six Sigma is a set of techniques and tools for process improvement.

• ISO is an international organization for standardization.

• Least count of vernier caliper is the smallest measurement that can be read.

• Types of measuring instruments include micrometers, calipers, rulers, etc.

• Tolerances can be bilateral or unilateral.

• Fits include clearance fit, interference fit, etc.

• ISO 13485 is a standard for quality manageme...read more

Adding two float variables and quality testing a water bottle after production.

• For adding two float variables, use a programming language and perform the addition operation

• For quality testing a water bottle, check for leaks, durability, and material quality

• Conduct drop tests, pressure tests, and visual inspections

• Ensure compliance with industry standards and regulations

• Perform statistical analysis on test results to identify any trends or issues

Sensors are devices that detect and respond to physical inputs or environmental conditions.

• There are various types of sensors such as temperature sensors, pressure sensors, proximity sensors, motion sensors, light sensors, etc.

• Temperature sensors measure the temperature of an object or environment.

• Pressure sensors measure the pressure of gases or liquids.

• Proximity sensors detect the presence or absence of an object within a certain range.

• Motion sensors detect movement or chan...read more

Three methods to measure thickness using vernier caliper

• Method 1: Place the object between the jaws and close them gently. Read the measurement from the main scale and vernier scale.

• Method 2: Use the depth gauge to measure the thickness of the object. Place the object on a flat surface and lower the depth gauge onto it.

• Method 3: Use the outside jaws to measure the thickness of the object. Place the object between the jaws and read the measurement from the main scale and verni...read more

Improving quality checking involves implementing effective quality control measures and utilizing advanced technologies.

• Establishing clear quality standards and guidelines

• Investing in advanced quality control technologies

• Providing regular training and development opportunities for quality control personnel

• Conducting regular audits and inspections to identify areas for improvement

• Encouraging collaboration and communication between quality control and other departments

• Implement...read more

Documents in quality management system

• Quality manual

• Standard operating procedures (SOPs)

• Work instructions

• Forms and templates

• Audit reports

• Non-conformance reports

• Corrective and preventive action (CAPA) reports

• Training records

• Risk management documents

• Change control documents

APQP is a process used in the automotive industry to ensure quality and consistency in new product development.

• APQP stands for Advanced Product Quality Planning

• It is a structured process used in the automotive industry to ensure quality and consistency in new product development

• It involves five stages: Planning and Definition, Product Design and Development, Process Design and Development, Product and Process Validation, and Launch, Assessment and Feedback

• Each stage has speci...read more

Quality engineering involves ensuring that products or services meet quality standards through testing and analysis.

• Developing and implementing quality control procedures

• Conducting inspections and audits to identify defects or non-conformities

• Analyzing data to identify trends and areas for improvement

• Collaborating with cross-functional teams to address quality issues

• Creating and maintaining documentation of quality processes

• Training and educating employees on quality standard...read more

Implemented quality control procedures in a project for improving product reliability.

• Identified critical areas for quality control and developed a plan

• Conducted regular inspections and audits to ensure compliance

• Implemented statistical process control to monitor and improve product quality

• Collaborated with cross-functional teams to address quality issues and implement corrective actions

• Trained employees on quality control procedures and best practices

Yes, ISO 9001 is a quality management system standard that focuses on meeting customer requirements and continuous improvement.

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

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

• The standard emphasizes the importance of a process-based approach, risk-based thinking, and continual improvement.

• ISO 9001 certification is often sought...read more

QE plans daily inspections based on criticality and frequency. QE plays a supportive role in consultant inspections.

• QE should prioritize inspections based on criticality and frequency of the process or product being inspected.

• Daily inspections should be planned in advance and scheduled to avoid any disruption to production.

• QE should ensure that all necessary equipment and tools are available for inspections.

• QE should document all inspections and report any non-conformances to...read more

The thickness of powder coating and CED varies depending on the specific application and requirements.

• The thickness of powder coating is typically measured in mils (thousandths of an inch) or micrometers.

• The desired thickness of powder coating can vary depending on factors such as the type of substrate, the intended use of the coated object, and the desired level of protection.

• For example, in automotive applications, the powder coating thickness for exterior parts may range f...read more