20+ Interview Questions and Answers

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 lens and housing in harsh environments.

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 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 (BIST), boundary scan, and more.

• The goal of DFT is to ensure ...read more

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

Machine maintenance involves regular inspections, cleaning, lubrication, and repairs to ensure optimal performance and prevent breakdowns.

• Create a maintenance schedule to track tasks and ensure they are completed on time.

• Perform regular inspections to identify any signs of wear, damage, or malfunction.

• Clean machines regularly to remove dirt, dust, and debris that can affect performance.

• Lubricate moving parts to reduce friction and prevent excessive wear.

• Replace worn-out or da...read more

Design considerations for plastic components include material selection, manufacturability, functionality, aesthetics, and cost.

• Material selection based on properties like strength, flexibility, and chemical resistance

• Consideration of manufacturability, such as moldability and ease of assembly

• Ensuring functionality requirements are met, such as mechanical strength or thermal resistance

• Aesthetics like color, texture, and surface finish are important for consumer products

• Cost c...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 fine filters include HEPA filters used in air purifiers an...read more

The frequency of machine maintenance depends on various factors such as machine type, usage, and manufacturer's recommendations.

• Machine maintenance schedules can vary from daily, weekly, monthly, quarterly, or annually.

• Some machines may require maintenance after a certain number of operating hours or cycles.

• Manufacturer's guidelines and maintenance manuals provide specific recommendations for each machine.

• Regular maintenance helps prevent breakdowns, ensures optimal performan...read more

Before 90 days, I would perform initial setup, testing, and calibration of the machine.

• Perform initial setup of the machine, including installation and configuration of electrical components.

• Conduct testing to ensure all electrical systems are functioning properly.

• Calibrate the machine to ensure accurate measurements and performance.

• Inspect and troubleshoot any potential issues or defects.

• Create a maintenance schedule and plan for regular check-ups and preventive maintenance....read more

Yes, I have over 5 years of experience as a Quality Engineer.

• I have worked in various industries such as automotive, aerospace, and electronics.

• Implemented quality control processes to improve product quality.

• Conducted root cause analysis and implemented corrective actions.

• Led cross-functional teams to resolve quality issues.

• Utilized statistical tools such as SPC and Six Sigma to drive continuous improvement.

TPM knowledge refers to understanding and implementing Total Productive Maintenance practices to improve equipment reliability and efficiency.

• TPM involves proactive maintenance to prevent breakdowns and improve overall equipment effectiveness

• It focuses on empowering operators to take ownership of equipment maintenance

• Examples include implementing autonomous maintenance tasks and conducting regular equipment inspections

System knowledge is essential for an Assistant Manager to effectively navigate and utilize various tools and technologies within the organization.

• Understanding of the company's internal systems and processes

• Proficiency in using software and tools relevant to the role (e.g. CRM, ERP)

• Ability to troubleshoot technical issues and provide support to team members

• Knowledge of data security protocols and best practices

• Experience in implementing and optimizing systems for efficiency

TPM (Total Productive Maintenance) activities are proactive maintenance strategies aimed at maximizing equipment effectiveness and minimizing downtime.

• TPM focuses on improving overall equipment effectiveness (OEE)

• Involves regular maintenance, cleaning, and inspection of equipment

• Includes training operators to perform basic maintenance tasks

• Encourages a culture of ownership and responsibility for equipment

• Utilizes tools like 5S, autonomous maintenance, and planned maintenance

jH Activities is a software tool used for tracking and managing production activities in a manufacturing environment.

• jH Activities helps in scheduling production tasks and monitoring progress

• It provides real-time data on production efficiency and downtime

• The software can generate reports on production performance and trends

• It can be integrated with other systems like ERP for seamless production management

Injection moulding is a manufacturing process used to produce parts by injecting material into a mould.

• Process of injecting molten material into a mould cavity

• Commonly used for producing plastic parts

• Highly automated process with fast production rates

• Used in various industries such as automotive, medical, and consumer goods

• Examples: plastic bottles, toys, automotive parts

SMED stands for Single Minute Exchange of Die. It is a lean manufacturing technique used to reduce setup time.

• SMED helps in reducing the time taken to changeover from one production process to another

• It involves breaking down the setup process into smaller steps and converting internal setup to external setup

• Benefits of SMED include increased productivity, reduced inventory, improved quality, and increased flexibility

• Example: A car manufacturer using SMED reduced their setup ...read more

An alluminizing machine with temperature control is used to apply a thin layer of aluminum onto a surface.

• Alluminizing machine is used to coat a surface with a thin layer of aluminum for various purposes such as improving corrosion resistance or enhancing reflectivity.

• Temperature control is important in the process to ensure the proper adhesion and quality of the aluminum coating.

• Examples of alluminizing machines with temperature control include vacuum deposition systems and ...read more

Preventing plastic defects involves proper material selection, design optimization, and quality control measures.

• Selecting the right type of plastic for the application

• Optimizing the design to minimize stress concentrations

• Implementing proper molding techniques and parameters

• Conducting thorough quality control inspections

• Addressing any issues promptly to prevent defects from recurring

Improving productivity can be achieved through efficient time management, clear communication, and continuous learning.

• Set clear goals and prioritize tasks

• Eliminate distractions and delegate tasks when possible

• Use technology and automation to streamline processes

• Encourage open communication and collaboration within the team

• Invest in employee training and development

• Regularly evaluate and adjust strategies for improvement

Mock drill is a simulated emergency scenario to test the preparedness of individuals and organizations.

• Types of mock drills include fire drills, earthquake drills, active shooter drills, and evacuation drills.

• Mock drills help identify gaps in emergency response plans and improve preparedness.

• Mock drills should be conducted regularly and involve all relevant personnel.

• After the drill, a debriefing session should be held to discuss strengths and weaknesses and make necessary im...read more

Process actives are steps or tasks involved in completing a specific process.

• Identify all the steps involved in the process

• List the tasks in sequential order

• Define the inputs and outputs of each step

• Assign responsibilities for each task

• Monitor progress and adjust as needed

Polycold is a cryogenic cooling system used in vacuum systems to achieve ultra-low temperatures.

• Polycold systems use a closed-loop refrigeration cycle to cool components to cryogenic temperatures.

• They are commonly used in semiconductor manufacturing, vacuum coating, and research applications.

• To use a Polycold system, ensure proper installation, maintenance, and monitoring of temperature and pressure levels.

• Regularly check and refill the coolant as needed to maintain optimal p...read more

LVDT stands for Linear Variable Differential Transformer, a type of sensor used in instrumentation to measure linear displacement.

• LVDT is a type of inductive sensor that converts linear motion into an electrical signal.

• It consists of a primary coil and two secondary coils wound on a hollow tube, with a movable core inside.

• The output voltage of the LVDT is proportional to the displacement of the core.

• LVDTs are commonly used in applications where precise and accurate measuremen...read more

My people management skills are strong, with a focus on clear communication, empathy, and fostering a positive work environment.

• Effective communication is key in managing people - I ensure that expectations are clearly communicated and feedback is given constructively.

• I prioritize empathy and understanding in my interactions with team members, taking the time to listen to their concerns and provide support.

• Creating a positive work environment is important for team morale and ...read more

Types of polishing in injection mould include diamond polishing, mirror polishing, matte polishing, and high-gloss polishing.

• Diamond polishing uses diamond paste to achieve a high level of shine and smoothness.

• Mirror polishing involves using a series of abrasive materials to create a mirror-like finish.

• Matte polishing creates a non-reflective surface by using abrasive materials with a lower grit.

• High-gloss polishing is a combination of techniques to achieve a glossy finish wi...read more

The annual income of my family is around $80,000.

• Annual income includes salaries, bonuses, investments, etc.

• It is important to consider all sources of income for an accurate figure.

• Income can vary based on family size and expenses.

• Example: My family's annual income is $80,000, which includes my salary, my spouse's salary, and rental income from a property.

• Example: Factors like inflation and job changes can impact annual income.

The 3.5 core tools for quality are FMEA, Control Plan, SPC, and MSA.

• FMEA (Failure Mode and Effects Analysis) helps identify and prevent potential failures in a process or product.

• Control Plan outlines the steps to maintain quality during production.

• SPC (Statistical Process Control) monitors and controls a process to ensure it stays within acceptable limits.

• MSA (Measurement System Analysis) evaluates the measurement system used to ensure accurate and reliable data.