20+ Interview Questions and Answers

Hot runner systems keep the plastic in a molten state while cold runner systems allow the plastic to solidify between the mold cavities.

• Hot runner systems are more expensive but reduce waste and cycle time.

• Cold runner systems are cheaper but produce more waste and require longer cycle times.

• Hot runner systems are used for high volume production while cold runner systems are used for low volume production.

• Hot runner systems require more maintenance and can be more complex to o...read more

Tolerance is the allowable variation in a dimension or property of a part or product.

• Tolerance is the difference between the maximum and minimum limits of a dimension or property.

• It is important in manufacturing to ensure parts fit together properly.

• There are two types of tolerance: unilateral and bilateral.

• Unilateral tolerance allows for variation in only one direction, while bilateral tolerance allows for variation in both directions.

• For example, a part with a diameter tole...read more

2K moulding technology involves using two different materials in a single mould to create a single part.

• 2K moulding technology involves injecting two different materials into a single mould to create a single part

• The materials are typically different colors or have different properties

• I have worked on designing moulds for automotive parts using 2K technology

I have worked on designing various plastic parts for consumer electronics, automotive, and household appliances.

• Designed plastic enclosures for electronic devices such as smartphones and laptops

• Developed plastic components for automotive interior and exterior parts

• Created plastic housings for household appliances like vacuum cleaners and kitchen gadgets

The process of opening a 3 plate mold involves separating the mold into three plates to release the molded part.

• 1. Release the locking mechanism holding the mold plates together.

• 2. Separate the mold into three plates: A, B, and C.

• 3. Remove the molded part from the cavity in plate B.

• 4. Open plates A and C to release the part.

• 5. Inspect the part for any defects or imperfections.

• 6. Close the mold plates back together for the next molding cycle.

Preventive maintenance is a proactive approach to maintenance that involves regularly scheduled inspections and repairs to prevent equipment breakdowns.

• Preventive maintenance involves regularly scheduled inspections and repairs

• It is a proactive approach to maintenance that aims to prevent equipment breakdowns

• It can include tasks such as lubrication, cleaning, and replacing worn parts

• Examples of preventive maintenance include changing the oil in a car every 5,000 miles or insp...read more

Clamping force for a part can be calculated using the formula: Clamping Force = Friction Coefficient x Normal Force

• Calculate the normal force acting on the part

• Determine the friction coefficient between the part and the clamping surface

• Multiply the friction coefficient by the normal force to get the clamping force

• Example: Normal force = 1000 N, Friction coefficient = 0.5, Clamping force = 500 N

To resolve a technical problem, identify the issue, research possible solutions, and test them out.

• Identify the problem by gathering information from the user or system logs.

• Research possible solutions by consulting documentation, online forums, or colleagues.

• Test out the solutions one by one, documenting the steps taken and the results.

• If the problem persists, escalate to a higher level of support or seek expert advice.

• Example: If a user is unable to access a website, check ...read more

There are three types of maintenance: corrective, preventive, and predictive.

• Corrective maintenance involves fixing a problem after it has occurred.

• Preventive maintenance involves regular maintenance to prevent problems from occurring.

• Predictive maintenance involves using data to predict when maintenance will be needed.

• Examples of corrective maintenance include replacing a broken part or fixing a malfunctioning machine.

• Examples of preventive maintenance include oil changes or...read more

Address the conflict through communication and mediation.

• Encourage open communication between conflicting parties to understand the root cause of the issue.

• Identify common ground and work towards a mutually beneficial solution.

• If necessary, involve a neutral third party mediator to facilitate the resolution process.

• Ensure that all parties involved feel heard and respected throughout the process.

• Implement measures to prevent future conflicts, such as clear communication channe...read more

Shut off angle is the angle at which a device stops conducting current in a circuit.

• Shut off angle is a term commonly used in power electronics.

• It refers to the angle at which a thyristor or other semiconductor device stops conducting current in a circuit.

• It is important in controlling the flow of current in AC circuits.

• For example, in a phase control circuit, the shut off angle determines when the device stops conducting current during each cycle of the AC waveform.

Hierarchy control is a systematic approach to managing workplace hazards by implementing controls in a specific order of effectiveness.

• Hierarchy control is a concept used in occupational health and safety to prioritize hazard controls.

• It involves implementing controls in a specific order based on their effectiveness in reducing or eliminating hazards.

• The hierarchy typically includes elimination, substitution, engineering controls, administrative controls, and personal protect...read more

Managing customer defect or performance score card involves tracking and analyzing customer complaints or feedback to improve overall quality.

• Establish clear metrics for measuring customer defects or performance

• Regularly monitor and analyze customer feedback and complaints

• Identify root causes of defects and implement corrective actions

• Communicate findings and improvements to relevant stakeholders

• Continuously strive to improve customer satisfaction and quality standards

The daily routine work involves a sequence of tasks that need to be completed in a specific order.

• Start the day by checking emails and responding to urgent ones

• Prioritize tasks based on deadlines and importance

• Attend meetings and conference calls

• Process and analyze data

• Communicate with team members and clients

• Complete paperwork and documentation

• Review and update project plans

• End the day by organizing tasks for the next day

Basic requirements for design include understanding the problem, defining objectives, researching, brainstorming, prototyping, testing, and refining.

• Understand the problem or need that the design is intended to address

• Define clear objectives and constraints for the design

• Conduct research to gather information and inspiration

• Brainstorm ideas and concepts

• Create prototypes to visualize and test the design

• Test the prototypes for functionality, usability, and feasibility

• Refine the...read more

APQP stands for Advanced Product Quality Planning. It is a structured approach to product and process design that ensures customer satisfaction.

• APQP is a process used in the automotive industry to ensure quality and reduce defects.

• It involves five phases: planning, product design and development, process design and development, product and process validation, and launch, assessment, and feedback.

• APQP helps to identify potential problems early in the design process, which can ...read more

Quality is the degree of excellence of a product or service that meets or exceeds customer expectations.

• Quality is meeting or exceeding customer expectations

• It involves consistency, reliability, and durability

• It is achieved through continuous improvement and adherence to standards

• Quality can be measured through metrics such as defect rates and customer satisfaction

• Examples of quality products include Apple iPhones and Toyota cars

Implemented IOT project to track and optimize energy consumption in manufacturing plant.

• Implemented sensors to monitor energy usage in real-time

• Utilized data analytics to identify patterns and optimize energy consumption

• Integrated IOT platform with existing systems for seamless data flow

PPAP stands for Production Part Approval Process, a standardized process used in the automotive industry to ensure quality and consistency of parts.

• PPAP is a set of procedures and requirements that suppliers must follow to demonstrate that their parts meet the customer's specifications.

• It includes documentation such as design records, engineering change orders, and material certifications.

• PPAP also involves testing and inspection of parts to ensure they meet performance and s...read more

Degree of excellence refers to the level of quality achieved in a particular field or activity.

• It is a measure of how well a task or objective has been accomplished

• It can be subjective and vary depending on the individual or organization

• It can be measured through various metrics such as customer satisfaction, defect rates, and process efficiency

• Continuous improvement is necessary to maintain a high degree of excellence