1500+ Quality Engineer Interview Questions and Answers

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

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

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

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

The least count of 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 vernier scale and the main scale.

• It is usually 0.02 mm or 0.001 inch for a standard vernier caliper.

• The least count can be calculated using the formula: Least count = (1 main scale division) / (number of divisions on the vernier scale).

• For example, if the main scale has 10 divisions and the vernier scale has 20 divisions,...read more

A project quality plan ensures that quality standards are met throughout the project lifecycle, enhancing outcomes and stakeholder satisfaction.

• Defines quality objectives and standards to be achieved, ensuring alignment with project goals.

• Outlines roles and responsibilities for quality assurance, promoting accountability among team members.

• Establishes processes for quality control and assurance, such as regular audits and reviews.

• Facilitates risk management by identifying pot...read more

Yes, stainless steel is better than mild steel due to its higher corrosion resistance, strength, and durability.

• Stainless steel has higher corrosion resistance than mild steel, making it ideal for applications in harsh environments.

• Stainless steel is stronger and more durable than mild steel, providing better longevity and reliability.

• Stainless steel is aesthetically pleasing and requires less maintenance compared to mild steel.

• Stainless steel is commonly used in industries s...read more

Otto cycle is a theoretical thermodynamic cycle that describes the functioning of a typical spark ignition piston engine.

• Otto cycle is a four-step process involving isentropic compression, constant volume heat addition, isentropic expansion, and constant volume heat rejection.

• PV diagram in engines is a graph showing the pressure-volume relationship during the engine cycle.

• Kinetic energy is the energy possessed by an object due to its motion.

• Wind harnessing is the process of c...read more

Quality is meeting or exceeding customer expectations, while quality control is the process of ensuring products or services meet quality standards.

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

• Quality control involves activities such as inspections, testing, and corrective actions to ensure products or services meet quality standards.

• Quality control aims to identify and correct defects or deviations from quality standards be...read more

We are using concrete grade M30 for the pier, pile, and pile cap in our project.

• Concrete grade M30 is commonly used for structures like piers, piles, and pile caps due to its high strength and durability.

• It is important to use the correct concrete grade to ensure the structural integrity and longevity of the project.

• Examples of other concrete grades commonly used in construction include M20, M25, and M40.

The least count and zero error of a vertical caliper can be identified by using a calibration standard and following a specific procedure.

• Clean the measuring surfaces of the caliper

• Close the jaws and check if the reading is zero

• If not, adjust the zero error by turning the dial

• Use a calibration standard of known dimension to measure and calculate the least count

• Repeat the process to ensure accuracy

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.

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

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

Concrete is a composite material made up of cement, water, and aggregates.

• Types of concrete include plain, reinforced, pre-stressed, and lightweight.

• Materials used for concrete include cement, water, aggregates (sand, gravel, crushed stone), and admixtures (chemicals added to improve properties).

• Different types of aggregates can be used to achieve different properties, such as strength, durability, and workability.

• Admixtures can be used to improve properties such as workabili...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

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

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.

Press parts problems can occur due to various reasons. Prevention measures include regular maintenance, proper training, and quality control.

• Press parts problems can occur due to wear and tear, improper maintenance, or operator error.

• Regular maintenance of the press machine and its parts can prevent issues from occurring.

• Proper training of operators can ensure that they use the machine correctly and avoid mistakes.

• Quality control measures can help identify and address any iss...read more

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.

We use a digital caliper on the shop floor to measure dimensions of parts.

• The digital caliper has a range of up to 6 inches and can measure in both inches and millimeters.

• It has a large LCD display for easy reading of measurements.

• The caliper has a locking screw to hold the measurement in place.

• We use it to measure the length, width, and thickness of parts to ensure they meet specifications.

• It is also used to check the diameter of holes and the depth of grooves.