Subros Engineer Interview Questions and Answers

There are various types of welding processes used in engineering, such as MIG, TIG, stick, and flux-cored welding.

• MIG (Metal Inert Gas) welding uses a wire electrode and shielding gas to join metals together.

• TIG (Tungsten Inert Gas) welding uses a non-consumable tungsten electrode and shielding gas for precise and clean welds.

• Stick welding, also known as Shielded Metal Arc Welding (SMAW), uses a flux-coated electrode t...read more

Sheet metal manufacturing process involves cutting, bending, and assembling metal sheets to create various products.

• Cutting: Using tools like shears, lasers, or plasma cutters to cut the metal sheets into desired shapes.

• Bending: Utilizing press brakes to bend the metal sheets into specific angles and shapes.

• Assembling: Joining the cut and bent metal pieces together through welding, riveting, or fastening methods.

• Finish...read more

ECN stands for Engineering Change Notice and ECR stands for Engineering Change Request. They are used to document and implement changes in engineering designs.

• ECN (Engineering Change Notice) is a document used to communicate changes in engineering designs to relevant stakeholders.

• ECR (Engineering Change Request) is a formal proposal to make changes to an engineering design.

• ECRs are typically submitted by engineers or p...read more

There are three main types of defects in engineering: design defects, manufacturing defects, and usage defects.

• Design defects occur when there is an issue with the initial design of a product, leading to problems in its functionality or safety. For example, a car with a faulty braking system due to a design flaw.

• Manufacturing defects happen during the production process, resulting in a product that does not meet the in...read more

The 7 wastes refer to inefficiencies in a process that can be eliminated to improve productivity and quality.

• Transportation: Unnecessary movement of materials or products

• Inventory: Excess inventory leading to waste of resources

• Motion: Unnecessary movement of people

• Waiting: Idle time in a process

• Overproduction: Producing more than needed

• Overprocessing: Doing more work than necessary

• Defects: Errors that require rework or

Line balance refers to distributing workload evenly among different stations in a production line to optimize efficiency.

• Line balance ensures that each station in the production line has a similar amount of work to do.

• It helps in preventing bottlenecks and maximizing throughput.

• Line balance can be achieved by adjusting the cycle times at each station or by adding/subtracting workstations.

• An example of line balance is i...read more

To reduce defects and increase productivity, focus on continuous improvement, training, quality control, and efficient processes.

• Implement a quality control system to catch defects early on

• Provide regular training to employees to improve skills and knowledge

• Analyze data to identify root causes of defects and implement corrective actions

• Streamline processes to eliminate waste and improve efficiency

OEE stands for Overall Equipment Effectiveness, a measure of how well a manufacturing process is utilized.

• OEE is calculated by multiplying Availability, Performance, and Quality.

• Factors affecting OEE include equipment downtime, speed loss, and defects in production.

• Improving OEE involves reducing downtime, increasing production speed, and minimizing defects.

• For example, implementing preventive maintenance can reduce eq

CBM stands for Condition-Based Maintenance and TBM stands for Tunnel Boring Machine.

• CBM is a maintenance strategy that uses real-time data to determine the condition of equipment and schedule maintenance accordingly.

• TBM is a machine used to excavate tunnels with a circular cross-section through a variety of soil and rock strata.

• MTTR (Mean Time to Repair) is the average time required to repair a failed component or syst...read more

A hydraulic system is a technology that uses fluid to transmit power and control movement.

• Hydraulic systems use a fluid, typically oil or water, to transmit power.

• The system consists of a pump, valves, actuators, and fluid lines.

• The pump pressurizes the fluid, which is then distributed through the system.

• Valves control the flow and direction of the fluid.

• Actuators, such as cylinders or motors, convert the fluid pressur...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 consists of five phases: Planning and Definition, Product Design and Development, Process Design and Development, Product and Process Validation, and Launch, Feedback, Assessment and Correc...read more

PPAP stands for Production Part Approval Process. It is a standardized process in the automotive industry to ensure quality and consistency.

• PPAP is a set of documents that must be submitted by a supplier to an automotive manufacturer before production can begin.

• The documents include items such as design records, engineering change documents, and control plans.

• PPAP is used to ensure that the supplier's parts meet the cu...read more

A quality system is a set of procedures and processes designed to ensure that products or services meet specified requirements.

• Quality system includes quality planning, quality control, quality assurance, and quality improvement

• It helps to ensure consistency, reliability, and safety of products or services

• Examples of quality systems include ISO 9001, Six Sigma, and Total Quality Management

• Regular audits and inspections...read more

Quality tools are techniques or methods used to ensure the quality of a product or service.

• Quality tools help in identifying and solving problems in a systematic way.

• They can be used in various stages of a project, from planning to execution.

• Examples of quality tools include flowcharts, Pareto charts, cause-and-effect diagrams, and statistical process control charts.