Napino Auto & Electronics Quality Engineer Interview Questions and Answers

The 7 QC tools are a set of basic quality control tools used to identify and solve quality problems.

• Check sheets

• Control charts

• Histograms

• Pareto charts

• Scatter diagrams

• Stratification

• Cause-and-effect diagrams

As a Quality Engineer in my previous company, I was responsible for ensuring product quality, conducting audits, and implementing quality control processes.

• Conducted product quality inspections and audits

• Implemented quality control processes to improve product quality

• Analyzed data to identify areas for improvement

• Collaborated with cross-functional teams to address quality issues

• Ensured compliance with industry standard...read more

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

• QA is a proactive process that involves planning, designing, and executing tests to prevent defects from occurring.

• QC is a reactive process that involves identifying defects through testing and then fixing them.

• QA is focused on the entire software development life cycle while QC is focused on the testing phase.

• Examples of QA activities ...read more

The types of lacquer used on lens and housing include acrylic lacquer, polyurethane lacquer, and epoxy lacquer.

• Acrylic lacquer is commonly used on lens and housing due to its high transparency and UV resistance.

• Polyurethane lacquer provides excellent durability and chemical resistance, making it suitable for lens and housing.

• Epoxy lacquer offers superior adhesion and impact resistance, making it a preferred choice for ...read more

A size fine filter is a type of filter used to remove small particles or impurities from a fluid or gas.

• Size fine filters are commonly used in industries such as manufacturing, pharmaceuticals, and food processing.

• They are designed to capture particles that are smaller than what can be filtered by regular filters.

• These filters can be made of various materials such as paper, fabric, or synthetic fibers.

• Examples of size ...read more

Direct metalizing is applicable on materials that can conduct electricity.

• Direct metalizing is a process of coating a non-metallic surface with a thin layer of metal.

• The material should be able to conduct electricity for direct metalizing to be applicable.

• Materials like plastic, glass, and ceramics can be direct metalized.

• Direct metalizing is commonly used in the automotive, aerospace, and electronics industries.

The amount of UV energy required for curing depends on the type of material being cured and the intensity of the UV light.

• UV energy required for curing varies depending on the material being cured

• Intensity of the UV light also affects the amount of energy required

• UV energy is typically measured in Joules per square centimeter (J/cm²)

• Examples of materials that require UV curing include adhesives, coatings, and inks

The amount of DFT required as per standard varies depending on the specific industry and project requirements.

• The required amount of DFT (Design for Testability) is determined by industry standards and project specifications.

• Different industries may have different standards for DFT.

• The complexity and size of the project also influence the amount of DFT required.

• DFT techniques include scan chains, built-in self-test (BI...read more

GD&T symbols are used to specify geometric tolerances on engineering drawings.

• GD&T stands for Geometric Dimensioning and Tolerancing

• It is a system of symbols used to specify the allowable variation in form and size of features on a part

• Examples of GD&T symbols include: flatness, perpendicularity, concentricity, and position

• GD&T is important for ensuring parts are manufactured to the correct specifications and fit toget...read more

True position on CMM can be checked using a combination of software and hardware tools.

• Use a calibrated probe to measure the feature location

• Compare the measured location with the nominal location

• Calculate the deviation and compare it with the tolerance

• Use software tools like GD&T to analyze the results

• Ensure the CMM is calibrated and the probe is in good condition

FMEA stands for Failure Mode and Effects Analysis. It is a systematic approach to identify and prevent potential failures in a process or product.

• FMEA is used to identify potential failures in a process or product and their effects on the system.

• It involves analyzing the likelihood of failure, severity of the consequences, and the ability to detect the failure before it occurs.

• FMEA is commonly used in industries such a...read more

Instrument selection involves identifying the appropriate tools and equipment for a specific task or process.

• Identify the purpose of the instrument

• Consider the accuracy and precision required

• Evaluate the cost and availability

• Ensure the instrument is compatible with other equipment

• Consider the maintenance and calibration requirements

Die casting and machining defects are common in manufacturing processes.

• Die casting defects include porosity, shrinkage, cold shuts, and flash.

• Machining defects include burrs, chatter marks, and tool marks.

• Die casting defects can be caused by improper temperature, pressure, or metal flow.

• Machining defects can be caused by dull tools, improper speeds and feeds, or poor fixturing.

• Defects can lead to part failure, reduced...read more

Filling and high speed ratio formula is used to calculate the filling time of a container with a specific volume of liquid at a given flow rate.

• Filling and high speed ratio formula is V/Q

• V is the volume of the container and Q is the flow rate of the liquid

• The formula is used to determine the time it takes to fill a container with a specific volume of liquid at a given flow rate

• The higher the flow rate, the faster the c...read more

Least count is the smallest measurement that can be made with an instrument.

• It is the smallest value that can be measured with an instrument.

• It is determined by the precision of the instrument.

• For example, the least count of a ruler with millimeter markings is 1 mm.

• It is important to consider the least count when taking measurements to ensure accuracy.

Gauges are tools used to measure and inspect various aspects of a product or process.

• Thread gauges for measuring screw threads

• Plug gauges for measuring hole diameters

• Bore gauges for measuring internal diameters

• Height gauges for measuring vertical distances

• Micrometers for measuring small distances

• Calipers for measuring distances and thicknesses

• Pressure gauges for measuring fluid pressure

• Temperature gauges for measuring ...read more

Various types of scales are used in quality engineering depending on the application.

• Common types include digital scales, balance scales, and platform scales.

• Scales may be used to measure weight, force, torque, or pressure.

• Accuracy and precision are important factors to consider when selecting a scale.

• Calibration and maintenance are necessary to ensure accurate measurements.

• Scales may be used in industries such as manu...read more