1500+ Quality Engineer Interview Questions and Answers

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.

Aggregate test is a method to determine the strength of coarse aggregates. Results criteria depend on the type of aggregate.

• Aggregate tests include crushing value test, impact value test, and abrasion value test.

• The results criteria for each test vary depending on the type of aggregate being tested.

• For example, the crushing value test result criteria for basalt aggregate is 25%, while for limestone aggregate it is 30%.

• The impact value test result criteria for basalt aggregate...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

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

M25 is a mix of concrete with a compressive strength of 25 MPa. The cube strength of M25 grade concrete should be 25 MPa.

• M25 is a mix of concrete with a compressive strength of 25 MPa.

• The cube strength of M25 grade concrete should be 25 MPa.

• The mix proportion for M25 grade concrete is usually 1:1:2 (cement:sand:aggregate).

I would investigate the issue, identify the root cause, and implement corrective actions to prevent future occurrences.

• Listen to the customer's complaint and gather all relevant information

• Conduct a thorough investigation to identify the root cause of the quality issue

• Implement corrective actions to address the issue and prevent future occurrences

• Communicate the findings and actions taken to the customer and relevant stakeholders

• Monitor the effectiveness of the corrective act...read more

Various quality tools can be used to solve problems in product checksheet, pareto diagram, fishbone diagram, histogram, scatter diagram, process flow diagram, and control chart.

• Checksheet can be used to collect data and identify patterns.

• Pareto diagram can help identify the most frequent problems.

• Fishbone diagram can be used to identify the root cause of a problem.

• Histogram can help identify the distribution of data.

• Scatter diagram can help identify the relationship between t...read more

An engine is a machine that converts fuel into motion. A boiler is a closed vessel that heats water to produce steam.

• An engine is a mechanical device that converts fuel into motion

• Boiler is a closed vessel that heats water to produce steam

• Boilers are used in power plants, heating systems, and industrial processes

• Boiler specifications include capacity, pressure, temperature, and fuel type

• Examples of fuel types include natural gas, oil, coal, and biomass

ESD is Electrostatic Discharge, 7QC is Seven Quality Control tools, Quality is meeting customer requirements.

• ESD is the sudden flow of electricity between two electrically charged objects caused by contact, an electrical short, or dielectric breakdown.

• 7QC tools are used for process improvement and include Pareto chart, cause-and-effect diagram, control chart, histogram, scatter diagram, flowchart, and check sheet.

• Quality is meeting customer requirements and expectations. It i...read more

The interview questions cover topics such as measuring instruments, QMS documentation, engineering drawing and GD&T, and achievements.

• Least counts of measuring instruments refer to the smallest measurement that can be read on the instrument.

• QMS documentation includes policies, procedures, and records that demonstrate compliance with quality standards.

• Engineering drawing and GD&T are used to communicate design specifications and tolerances.

• Achievements can include successful p...read more

As a Quality Engineer, I handle various customers from different industries.

• I handle customers from industries such as manufacturing, automotive, aerospace, and technology.

• I work with both internal and external customers.

• I ensure customer satisfaction by addressing their concerns and providing quality solutions.

• I collaborate with cross-functional teams to meet customer requirements and improve product quality.

• Examples: ABC Manufacturing, XYZ Automotive, DEF Aerospace.

Function overloading is the ability to define multiple functions with the same name but different parameters. The main method cannot be overloaded.

• Function overloading allows multiple functions with the same name but different parameters to coexist in a program.

• Example: int add(int a, int b) and float add(float a, float b) are overloaded functions.

• The main method in Java cannot be overloaded as it is the entry point of a program.

• To automate naukri.com using Selenium, you can ...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

I investigate production flaws by analyzing data, conducting root cause analysis, and implementing corrective actions.

• Collect and analyze data on the production process

• Conduct root cause analysis to identify the source of the flaw

• Develop and implement corrective actions to prevent future flaws

• Collaborate with production team to ensure corrective actions are effective

• Document findings and actions taken for future reference

I handle customers by actively listening to their concerns, providing prompt and accurate responses, and ensuring their satisfaction.

• Actively listen to customers to understand their needs and concerns

• Provide prompt and accurate responses to address their issues

• Offer solutions or alternatives to resolve any problems

• Ensure customer satisfaction by following up and seeking feedback

• Maintain a professional and friendly demeanor throughout interactions

The 5 engine part names are piston, cylinder, crankshaft, camshaft, and valve.

• Piston: Moves up and down inside the cylinder to compress the fuel-air mixture.

• Cylinder: Houses the piston and allows for the combustion process.

• Crankshaft: Converts the linear motion of the piston into rotational motion.

• Camshaft: Controls the opening and closing of the engine's valves.

• Valve: Regulates the flow of fuel-air mixture and exhaust gases in and out of the cylinder.

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

• QA stands for Quality Assurance and is a proactive process that focuses on preventing defects by establishing processes and standards.

• QC stands for Quality Control and is a reactive process that focuses on identifying and fixing defects through inspections and testing.

• QA is concerned with the overall quality of the product or service, while QC is concerned with the quality of individual compo...read more

2-stroke engines complete a power cycle in one revolution, while 4-stroke engines complete it in two revolutions.

• 2-stroke engines have a simpler design and are lighter than 4-stroke engines.

• 2-stroke engines have a higher power-to-weight ratio than 4-stroke engines.

• 4-stroke engines are more fuel-efficient and have a longer lifespan than 2-stroke engines.

• Examples of 2-stroke engines include chainsaws and dirt bikes, while examples of 4-stroke engines include cars and lawnmowers...read more

Possible reasons for cube failure despite good materials

• Improper mixing of materials

• Incorrect curing process

• Inadequate compaction of concrete

• Presence of air voids or impurities

• Poor quality control during manufacturing

Address conflicts by facilitating open communication, understanding both perspectives, and finding a mutually agreeable solution.

• Encourage open communication between Dev and QA teams to understand each other's perspectives

• Review the bug reports together to identify the root cause of the conflict

• Facilitate discussions to reach a mutually agreeable solution, considering the impact on the project timeline and quality

• Establish clear guidelines and processes for bug reporting and ...read more

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

7QC tools are a set of quality control tools used for process improvement and problem-solving in quality management.

• Check sheets: Used to collect and analyze data in a systematic way.

• Histograms: Used to show frequency distribution of a process.

• Pareto charts: Helps identify the most significant factors contributing to a problem.

• Cause-and-effect diagrams: Used to identify and analyze potential causes of a problem.

• Scatter diagrams: Used to show the relationship between two varia...read more

DELETE removes specific rows from a table, DROP removes entire table, TRUNCATE removes all rows from a table.

• DELETE is used to remove specific rows from a table based on a condition.

• DROP is used to remove an entire table from the database.

• TRUNCATE is used to remove all rows from a table, but the table structure remains.

Use the modulo operator in SQL to determine if a number is even or odd.

• Use the modulo operator (%) to check if the given number divided by 2 has a remainder of 0 (even) or 1 (odd).

• For example, SELECT CASE WHEN number % 2 = 0 THEN 'Even' ELSE 'Odd' END AS result FROM table_name WHERE number = given_number;

Factors affecting mechanical properties like tensile in grey iron include composition, microstructure, heat treatment, and casting process.

• Composition of grey iron, including the amount of carbon and silicon, affects its mechanical properties.

• Microstructure, such as graphite morphology and matrix structure, plays a significant role in determining tensile strength.

• Heat treatment can alter the mechanical properties of grey iron by changing its microstructure.

• Casting process par...read more

Reduced number of reported non-conformities indicates improved quality control and adherence to standards.

• Improved quality control measures

• Adherence to standards and procedures

• Effective corrective actions

• Reduced risk of product recalls or customer complaints

Both are equally important and work together to ensure quality standards are met.

• Quality Control focuses on identifying and correcting defects in the final product.

• Quality Assurance focuses on preventing defects from occurring in the first place.

• QC is reactive while QA is proactive.

• QC is a subset of QA.

• Both are necessary for a successful quality management system.

Injection moulding is a manufacturing process used to produce parts by injecting material into a mould. It is different from other processes in terms of speed, cost-effectiveness, and complexity.

• Injection moulding is a high-speed process, making it ideal for mass production of identical parts.

• It is cost-effective for large production runs due to low per-unit costs.

• Injection moulding allows for complex part designs and intricate details to be easily replicated.

• Other processes ...read more

Characteristic strength is the strength of a material below which not more than a specified proportion of test results are expected to fall. Target mean strength is the strength that a structure is designed to achieve.

• Characteristic strength is a statistical value representing the lower tail of the strength distribution of a material.

• Target mean strength is the strength that a structure is designed to achieve based on safety factors and design codes.

• The relation between chara...read more

To draw an isometric view from an orthographic drawing.

• Identify the front, top, and right side views from the orthographic drawing.

• Draw the isometric axes at 120 degrees to each other.

• Project the points from the front, top, and right side views onto the isometric axes.

• Connect the projected points to form the isometric view.

Aggregate abrasion value is a measure of the resistance of aggregate to wear by abrasion.

• Aggregate abrasion value is determined by subjecting the aggregate sample to abrasion in a rotating steel drum containing a specified number of steel spheres or rods.

• The sample is then removed from the drum and sieved to determine the weight of the material passing through a specified sieve size.

• The aggregate abrasion value is calculated as the percentage loss in weight of the material co...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.

Preparing concrete mix design involves selecting the right ingredients and proportions to achieve desired strength and durability. Maintaining concrete density requires proper compaction and curing techniques.

• Concrete mix design involves selecting the right type and amount of cement, aggregates, water, and admixtures based on the project requirements and environmental conditions.

• The mix proportions are determined by conducting trial batches and testing the fresh and hardened ...read more

Pre & post pour checks are essential to ensure the quality of concrete.

• Pre-pour checks include inspection of formwork, reinforcement, and concrete mix design.

• Post-pour checks include slump test, air content test, and temperature monitoring.

• Other checks include curing, finishing, and testing for compressive strength.

• These checks help ensure that the concrete is of the desired quality and meets the project specifications.

Quality is the measure of excellence or superiority of a product or service. It is essential for an organization to ensure customer satisfaction and maintain a competitive edge.

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

• It involves meeting or exceeding customer expectations and requirements.

• Quality is crucial for customer satisfaction and loyalty.

• It helps in building a strong reputation and brand image.

• Quality reduces costs by minimizing...read more

A Quality Engineer ensures that products and services meet quality standards and customer expectations.

• Develop and implement quality control processes

• Conduct audits and inspections to identify defects and areas for improvement

• Collaborate with cross-functional teams to resolve quality issues

• Analyze data to identify trends and opportunities for improvement

• Ensure compliance with industry regulations and standards

• Provide training and support to employees on quality processes and ...read more

BS EN 10204 type 2 & type 3 are different in terms of the level of testing and inspection performed.

• Type 2 includes testing and inspection by the manufacturer and certification by a third party.

• Type 3 includes additional testing and inspection by an independent third party.

• Type 3.2 includes witnessing of testing and inspection by the third party.

• Type 2.2 and 3.1 do not include witnessing of testing and inspection by the third party.

• Type 2.3 and 3.3 include additional testing ...read more

I use tools like 5 Whys, Fishbone Diagram, and Pareto Analysis to find the root cause of a problem.

• Utilize the 5 Whys technique to ask 'why' multiple times to get to the root cause of the problem.

• Create a Fishbone Diagram (Ishikawa diagram) to visually map out potential causes of the problem.

• Conduct a Pareto Analysis to identify the most significant factors contributing to the problem.

• Use tools like Scatter Diagrams, Control Charts, and Histograms to analyze data and identify...read more

DGCA stands for Directorate General of Civil Aviation. They are the regulatory body for civil aviation in India.

• DGCA stands for Directorate General of Civil Aviation

• They are the regulatory body for civil aviation in India

• Responsible for regulation of air transport services, safety oversight, and airworthiness standards

• Issues licenses to pilots, engineers, and air traffic controllers

There are four main types of welding positions: flat, horizontal, vertical, and overhead.

• Flat position: Welding is done on a horizontal surface.

• Horizontal position: Welding is done on a vertical surface, with the weld axis in a horizontal plane.

• Vertical position: Welding is done on a vertical surface, with the weld axis in a vertical plane.

• Overhead position: Welding is done on the underside of a horizontal surface.

Calipers, micrometers, gauges, and CMMs are commonly used instruments to check parameters and improve quality.

• Calipers are used to measure the distance between two opposite sides of an object.

• Micrometers are used to measure very small distances or thicknesses.

• Gauges are used to measure various parameters such as pressure, temperature, or dimensions.

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

The seven QC tools are a set of quality control tools used to identify and solve quality-related issues in manufacturing processes.

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

• Check sheets are used to collect data and record occurrences of specific events or defects.

• Histograms are graphical representations of data distribution, showing the frequency of occurrences within specified ...read more

The strength of 7 days cube specimen for M50 concrete should be at least...

• The strength of concrete is measured in terms of compressive strength

• For M50 concrete, the strength of 7 days cube specimen should be at least 50 MPa

• This means that the cube specimen should be able to withstand a compressive force of 50 megapascals after 7 days of curing

SOP of production refers to the standard operating procedures followed during the manufacturing process.

• SOP outlines the steps to be followed during production to ensure consistency and quality.

• It includes guidelines for equipment usage, safety measures, and quality checks.

• As a Quality Engineer, I can prepare a grade for the product based on the quality parameters and mechanical parameters.

• Quality parameters include factors like purity, potency, and stability, while mechanica...read more

ISO:9001:2016 & IATF 16949 are quality management system standards. GD&T symbols are used in engineering drawings for precise communication.

• ISO:9001:2016 is a standard for quality management systems, focusing on meeting customer requirements and continuous improvement.

• IATF 16949 is a standard specifically for the automotive industry, emphasizing defect prevention and reduction of variation.

• GD&T symbols are geometric dimensioning and tolerancing symbols used in engineering dra...read more

The laws of thermodynamics describe the behavior of energy in a system.

• First Law: Energy cannot be created or destroyed, only transferred or converted.

• Second Law: The entropy of an isolated system always increases over time.

• Third Law: As temperature approaches absolute zero, the entropy of a perfect crystal approaches zero.

• Example: A car engine converting fuel into motion follows the laws of thermodynamics.

To stop manpower from completing dispatch plan during critical conditions, prioritize safety and communicate effectively.

• Ensure safety of workers and prioritize it over meeting deadlines

• Communicate the critical situation to the workers and explain the risks involved

• Provide necessary training and equipment to handle critical situations

• Implement contingency plans to deal with emergencies

• Monitor the situation closely and make necessary adjustments to the dispatch plan

• Encourage w...read more