1500+ Quality Engineer Interview Questions and Answers

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

The check points given by the customer in the power bank include battery capacity, charging time, safety features, and compatibility.

• Battery capacity: Customers may specify the desired capacity of the power bank, such as 10,000mAh or 20,000mAh.

• Charging time: Customers may expect the power bank to charge their devices within a specific time frame, like 2 hours or less.

• Safety features: Customers may require the power bank to have overcharge protection, short circuit protection,...read more

Ultrasonic testing is based on acoustic impedance mismatch to detect flaws or measure thickness in materials.

• Ultrasonic waves are sent into the material being tested

• When the waves encounter a boundary or defect, some of the waves are reflected back

• By analyzing the time it takes for the waves to return, the location and size of defects can be determined

• Common applications include flaw detection in welds, thickness measurement in pipes, and material characterization

GD&T is a symbolic language used to specify the geometric tolerances of a part. Least material count is the minimum amount of material required to meet the design requirements. Angularity is the tolerance for the angle between two surfaces.

• GD&T stands for Geometric Dimensioning and Tolerancing

• It is used to define the allowable variation in form, size, orientation, and location of features on a part

• Symbols are used to represent the geometric tolerances on a drawing

• Least materi...read more

The manual micrometer will measure the value of 0.005mm.

• The manual micrometer has a higher precision than the manual vernier caliper.

• The manual micrometer can measure values up to 0.001mm, while the vernier caliper can measure up to 0.02mm.

• The micrometer has a spindle and an anvil that can accurately measure small distances.

• The vernier caliper is better suited for measuring larger distances or dimensions.

GD&T is a system for defining and communicating engineering tolerances on technical drawings.

• GD&T is a symbolic language used to specify the form, orientation, and location of features on a part.

• It allows engineers to clearly communicate design requirements to manufacturers.

• GD&T uses symbols such as concentricity, perpendicularity, flatness, and position to define tolerances.

• It helps ensure parts are manufactured accurately and consistently.

• GD&T can improve product quality, r...read more

I am proficient in SQL and have experience in writing complex queries.

• Proficient in writing complex SQL queries

• Experience in working with large databases

• Familiarity with database management systems like MySQL, Oracle, and SQL Server

• Ability to optimize queries for better performance

• Experience in data analysis and reporting using SQL

MSA stands for Measurement System Analysis. GAGE R&R is a method to assess measurement system variation. NDC refers to the Number of Distinct Categories.

• MSA is a statistical method used to evaluate the measurement system's ability to provide accurate and reliable data.

• GAGE R&R is a specific MSA technique used to assess the variation contributed by the measurement system itself.

• The output of GAGE R&R is typically expressed as a percentage of total variation, indicating the pro...read more

I prepare the grade of product by analyzing the requirements, conducting research, and testing.

• Analyze the requirements of the product

• Conduct research on the materials and processes needed

• Test the product to ensure it meets the required standards

• Make necessary adjustments to the process to achieve the desired grade

• Collaborate with other departments to ensure quality control

• Continuously monitor and improve the process

• Example: For a new type of steel, I would analyze the requir...read more

The interview questions cover SQL joins, test execution planning, pill weight problem, and website automation.

• Cross join produces a Cartesian product of two tables, while inner join returns only the matching rows

• Query to find employee and manager names: SELECT e.employee_name, m.manager_name FROM employee e INNER JOIN employee m ON e.manager_id = m.employee_id

• For test execution with limited time and TCs, prioritize test cases based on criticality and impact

• Identify contaminat...read more

The value of 1/infinity is 0.

• The value of 1/infinity is considered to be zero.

• In mathematics, infinity is not a number but a concept representing an unbounded quantity.

• When we divide any finite number by infinity, the result tends to zero.

• For example, 1/∞ = 0, 10/∞ = 0, -5/∞ = 0.

Microprocessors are essential components in electronic devices, serving as the brain of the system.

• Microprocessors control the operations of electronic devices by executing instructions and processing data.

• They enable devices to perform complex tasks quickly and efficiently.

• Examples of devices with microprocessors include smartphones, laptops, and smart home appliances.

• Microprocessors play a crucial role in enhancing the functionality and performance of electronic devices.

The question covers various testing types, techniques, elements, window handling, frameworks, Cucumber options, hooks, and string manipulation using Java.

• Testing types include functional testing, regression testing, performance testing, etc.

• Testing techniques can involve manual testing, automated testing, black box testing, white box testing, etc.

• Find element is used to locate a single element on a web page, while find elements is used to locate multiple elements.

• Window handl...read more

Hydraulic refers to the use of fluids to transmit power or energy.

• Hydraulic systems use liquids such as oil or water to transmit power.

• Examples include hydraulic brakes in cars and hydraulic lifts in buildings.

• Failure can occur due to leaks, blockages, or mechanical issues.

• Regular maintenance and inspection can prevent failure and ensure proper functioning.

The passing criteria of concrete cubes is based on the compressive strength achieved by the cubes after a certain period of time.

• The cubes are usually tested after 7 and 28 days of curing

• The passing criteria varies depending on the grade of concrete used

• For example, for M20 grade concrete, the passing criteria is 20 N/mm² after 28 days of curing

• The cubes are tested using a compression testing machine

Quality is the measure of excellence in a product or service. It is determined by meeting customer requirements and industry standards.

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

• It is achieved by ensuring that the product is free from defects and meets all specified requirements.

• Quality can be measured through various metrics such as reliability, durability, performance, and customer satisfaction.

• Quality assurance processes, suc...read more

Vernier caliper, micrometre and height gauge are measuring tools used in engineering.

• Vernier caliper measures length, width, and depth of an object with high accuracy. Its least count is 0.02 mm.

• Micrometre measures thickness, diameter, and depth of an object with high precision. Its least count is 0.01 mm.

• Height gauge measures the height of an object with high accuracy. Its least count is 0.02 mm.

• All three tools work on the principle of linear measurement and have a sliding s...read more

Common problems in paints include cracking, peeling, fading, and bubbling. Cost-saving measures include proper surface preparation, using high-quality materials, and efficient application techniques.

• Common problems in paints include cracking, peeling, fading, and bubbling

• To deal with these problems, ensure proper surface preparation before painting

• Use high-quality paints and materials to prevent issues like fading and peeling

• Implement efficient application techniques to save ...read more

Quality of materials and products is ensured through various methods.

• Establishing quality standards and procedures

• Conducting regular inspections and tests

• Collaborating with suppliers to ensure quality materials

• Implementing corrective actions when necessary

• Continuous improvement through data analysis and feedback

• Training employees on quality control measures

Quality is meeting or exceeding customer expectations through consistent and reliable processes.

• Sheet grade refers to the quality of the material used in manufacturing.

• Press operation is the process of shaping the material into the desired form.

• Drawing projection is a technical drawing that shows the dimensions and specifications of the product.

• Measuring instruments are tools used to ensure that the product meets the required specifications.

• Control plan is a document that out...read more

Questions related to Quality Engineering tools and processes.

• 7QC tools: Check sheets, Control charts, Histograms, Pareto charts, Scatter diagrams, Fishbone diagrams, Flowcharts

• Control plan: A document that outlines the steps to be taken to maintain quality standards during production.

• PPAP documents: Design records, Engineering change documents, Process flow diagrams, FMEA, Control plan, Measurement system analysis, Material certifications, Sample production parts

• SPC: Statisti...read more

Quality is meeting or exceeding customer expectations through consistent and reliable processes and products. Documents play a crucial role in ensuring quality and customer satisfaction.

• Quality is about meeting or exceeding customer expectations

• Consistent and reliable processes and products are key to achieving quality

• Documents play a crucial role in ensuring quality and customer satisfaction

• Customer satisfaction is a measure of how well a product or service meets their needs...read more

MIG and MAG welding differ in the type of shielding gas used. CO2 is preferred over Argon due to its cost-effectiveness. Efficiency depends on the application.

• MIG welding uses a mixture of Argon and CO2, while MAG welding uses pure CO2

• CO2 is preferred over Argon due to its lower cost and higher penetration power

• Efficiency of the mixture depends on the application and the type of metal being welded

• For example, a higher percentage of CO2 is used for welding thicker metals

• Effici...read more

Chemical composition of materials like SS 304 and MS includes carbon content and major content.

• SS 304 contains 18% chromium and 8% nickel with a maximum carbon content of 0.08%

• MS (Mild Steel) contains low carbon content (up to 0.25%) and small amounts of other elements like manganese and silicon

• Other materials like aluminum, copper, and titanium have their own unique chemical compositions

The question covers various topics related to welding, quality control, and audits.

• Types of welding techniques and how to calculate spot diameter

• 7QC tools and their application in quality control

• 4M analysis and types of changes in welding processes

• Symbols used in welding and their meanings

• MSA and PPAP in quality control

• Types of audits and their purpose

• Dock audit and its significance

The interview question covers topics related to forging, quality, rolling, measuring instruments, UTS, HTC, and raw materials.

• Forging is a manufacturing process where metal is shaped by applying compressive forces.

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

• Rolling is a metalworking process where metal is passed through rollers to reduce its thickness.

• Measuring instruments are tools used to measure physical quantities such as length, weight, and tempera...read more

Yes, I am aware of vernier, micrometer, and special gauges.

• Vernier caliper is a measuring instrument used to measure dimensions with high accuracy.

• Micrometer is a precision measuring instrument used to measure small distances or thicknesses.

• Special gauges are specialized measuring tools designed for specific applications.

• Examples of special gauges include thread gauges, plug gauges, and ring gauges.

PPM stands for parts per million. It is a unit of measurement used to express the concentration of a substance in a solution.

• PPM is calculated by dividing the number of parts of a substance by the total number of parts in the solution and multiplying by one million.

• Formula: PPM = (Number of parts of substance / Total number of parts in solution) * 1,000,000

• For example, if there are 10 parts of a substance in a solution with a total of 1000 parts, the PPM would be (10/1000) * ...read more

0.1 microns is equal to 100 nanometers.

• 1 micron is equal to 1000 nanometers.

• Therefore, 0.1 micron is equal to 100 nanometers.

• Microns and nanometers are units of length used to measure very small distances.

• This conversion is commonly used in fields like nanotechnology and microscopy.

Acceptability criterions are established by defining quality standards and metrics for each work element in the project.

• Define quality standards and metrics for each work element

• Ensure that the standards and metrics are measurable and achievable

• Communicate the standards and metrics to the project team

• Monitor and evaluate the work elements against the established standards and metrics

• Make necessary adjustments to the standards and metrics as needed

I will immediately stop the production and inform the concerned department for corrective action.

• Stop the production line

• Inform the concerned department

• Identify the root cause

• Take corrective action

• Ensure the issue is resolved before resuming production

The question is not related to the Quality Engineer role and is about fasteners and self-tapping screws.

• Father's activity is not relevant to the Quality Engineer role

• Fasteners are hardware devices used to join two or more objects together

• Fasteners can be made of various materials such as steel, aluminum, brass, etc.

• Fasteners are graded based on their strength and durability

• Types of finishes for fasteners include zinc plating, black oxide, and chrome plating

• Self-tapping screws...read more

Quality is meeting or exceeding customer expectations. Pen quality is subjective and depends on the intended use.

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

• Pen quality can be subjective and depend on factors such as ink flow, durability, and intended use

• A high-quality pen for a calligrapher may be different from a high-quality pen for a student taking notes

• Similarly, a high-quality plan for a construction project may be different...read more

1st and 3rd angle methods are used in engineering drawings to represent the orientation of an object in 3D space.

• 1st angle method is commonly used in Europe and Asia, while 3rd angle method is used in North America.

• In 1st angle method, the object is placed in the first quadrant of the viewing plane, while in 3rd angle method, it is placed in the third quadrant.

• The symbol for 1st angle projection is a square with a dot in the center, while the symbol for 3rd angle projection i...read more

The first quadrant and the third quadrant are two different sections of a coordinate plane.

• The first quadrant is located in the upper right-hand side of the coordinate plane.

• It contains points with positive x and y coordinates.

• The third quadrant is located in the lower left-hand side of the coordinate plane.

• It contains points with negative x and y coordinates.

• The first quadrant is often associated with growth and positive values, while the third quadrant is associated with de...read more

SPC is Statistical Process Control used to monitor and control quality. Cp and Cpk measure process capability. Sigma is population standard deviation.

• SPC is a statistical method used to monitor and control processes to ensure quality standards are met.

• Cp and Cpk are indices used to measure process capability. Cp measures how well the process fits within the specification limits, while Cpk measures how centered the process is within the limits.

• Sigma is the population standard ...read more

Answers to questions related to quality engineering concepts such as Vernier caliper, Micrometer, Root cause analysis, Iron Carbon Diagram, GD&T, and First angle vs Third angle method.

• Vernier caliper least count is 0.02 mm, used for measuring external and internal dimensions accurately.

• Micrometer least count is 0.01 mm, used for precise measurements of small dimensions.

• Root cause analysis is a method used to identify the underlying cause of a problem to prevent its recurrence...read more

Precision is the consistency of measurements, while accuracy is the closeness of measurements to the true value. Quality is meeting customer requirements and expectations using 7 quality tools and ISO/IATF documentation.

• Precision refers to the repeatability of measurements, while accuracy refers to how close the measurements are to the true value.

• Quality is meeting customer requirements and expectations, and can be achieved through the use of 7 quality tools such as Pareto ch...read more

Quality control focuses on identifying defects in products, while quality assurance focuses on preventing defects from occurring.

• Quality control involves inspecting products to identify defects and ensure they meet standards

• Quality assurance involves implementing processes and systems to prevent defects from occurring in the first place

• Quality control is reactive, while quality assurance is proactive

• Examples: Quality control includes product testing and inspection, while qual...read more

The wattage of a solar cell depends on various factors such as its size, efficiency, and sunlight intensity.

• The wattage of a solar cell is determined by multiplying its voltage and current output.

• The size of the solar cell affects its wattage, as larger cells can generate more power.

• The efficiency of the solar cell also plays a role, as higher efficiency cells can convert more sunlight into electricity.

• The intensity of sunlight received by the solar cell affects its wattage, ...read more

The 7 QC tools are used for quality control, risk assessment is used to identify and mitigate potential risks, attribute and variable are two types of data, and GD&T is a system for defining and communicating engineering tolerances.

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

• Risk assessment involves identifying potential hazards, assessing the likelihood and severity of harm, and implementing ...read more

Six Sigma is a data-driven approach to quality management. 5S is a method for workplace organization. 7 wastes of manufacturing are non-value adding activities.

• Six Sigma aims to reduce defects and improve quality by using statistical methods.

• 5S method involves sorting, simplifying, sweeping, standardizing, and self-discipline to improve workplace efficiency.

• The 7 wastes of manufacturing are overproduction, waiting, defects, overprocessing, excess inventory, unnecessary motion...read more

PFMEA stands for Process Failure Mode and Effects Analysis, MQP stands for Manufacturing Quality Plan, QA focuses on preventing defects while QC focuses on identifying defects.

• PFMEA is a structured approach to identifying and prioritizing potential failure modes in a process and their effects.

• MQP is a document that outlines the quality control processes and procedures for manufacturing a product.

• QA (Quality Assurance) focuses on preventing defects by implementing processes an...read more

During a crisis, general concepts to apply include effective communication, quick decision-making, adaptability, and teamwork.

• Effective communication is crucial to keep all stakeholders informed and aligned.

• Quick decision-making is necessary to address the crisis promptly and minimize its impact.

• Adaptability is key to adjusting strategies and plans as the situation evolves.

• Teamwork is essential for pooling resources and expertise to tackle the crisis together.

The annual child birth ratio of an average Indian is approximately 2.3 children per woman.

• The total fertility rate in India is around 2.3 children per woman.

• This rate varies across different states and regions in India.

• Factors such as education, socio-economic status, and cultural norms influence the fertility rate.

• For example, states like Bihar and Uttar Pradesh have higher fertility rates compared to Kerala and Tamil Nadu.

I will use a combination of boundary value analysis, equivalence partitioning, and exploratory testing to identify bugs in the application.

• Use boundary value analysis to test the boundaries of input ranges.

• Apply equivalence partitioning to test different equivalence classes.

• Conduct exploratory testing to simulate real user interactions and uncover unexpected bugs.