Shindengen Interview Questions and Answers

Prandtl number is a dimensionless number used in fluid mechanics to describe the ratio of momentum diffusivity to thermal diffusivity.

• It is named after the German physicist Ludwig Prandtl.

• It is used to predict fluid flow behavior and heat transfer in different materials.

• It is calculated as the ratio of kinematic viscosity to thermal diffusivity.

• It is important in the study of boundary layers, turbulence, and convection...read more

Manholes are circular because they cannot fall through their own opening.

• Circular manholes cannot fall through their own opening, unlike square or rectangular ones.

• Circular shape distributes weight evenly, making it easier to move and handle.

• Circular shape also reduces the risk of injury from sharp corners.

• Circular manholes are easier to manufacture and install.

• Circular shape allows for easier access from any angle.

• Cir...read more

Bernoulli's equation relates the pressure, velocity, and height of a fluid in motion.

• Bernoulli's equation is based on the principle of conservation of energy.

• It is commonly used in fluid mechanics to analyze the flow of fluids through pipes and channels.

• The equation states that as the velocity of a fluid increases, its pressure decreases, and vice versa.

• It can be expressed as P + 1/2ρv^2 + ρgh = constant, where P is pr...read more

Quality tools are techniques used to ensure quality in a product or service.

• Quality control charts

• Pareto charts

• Fishbone diagrams

• Histograms

• Control charts

• Scatter diagrams

• Statistical process control

A histogram is used to represent the distribution of numerical data. Frequency is the number of occurrences and interval is the range of values.

• Histograms are useful for visualizing data and identifying patterns.

• Frequency refers to the number of times a value appears in the data set.

• Interval refers to the range of values that are grouped together in the histogram.

• Histograms are commonly used in statistics, finance, and...read more

Rework of produced parts affects the factors of Overall Equipment Efficiency (OEE).

• Rework increases the time required to produce a part, reducing the availability factor of OEE.

• Rework increases the number of defects, reducing the quality factor of OEE.

• Rework increases the amount of scrap or waste, reducing the performance factor of OEE.

• Rework can lead to increased downtime for equipment setup and adjustments, reducing ...read more

Autonomous maintenance is a maintenance approach where operators take responsibility for routine maintenance tasks.

• Operators are trained to perform routine maintenance tasks

• Operators conduct inspections and minor repairs

• Autonomous maintenance reduces downtime and improves equipment reliability

• It also frees up maintenance staff to focus on more complex tasks

Companies are going for TPM to improve productivity, reduce downtime, and increase efficiency.

• TPM helps in identifying and eliminating equipment failures before they occur

• It ensures that equipment is maintained properly and in a timely manner

• TPM also helps in reducing the need for emergency repairs and downtime

• It improves overall equipment effectiveness and reduces costs

• Companies that have implemented TPM have seen sig...read more

SPC stands for Statistical Process Control. Cp and Cpk are statistical tools used to measure process capability.

• SPC is a method of monitoring and controlling a process to ensure it is operating within acceptable limits.

• Cp is a measure of how well the process is centered between the upper and lower specification limits.

• Cpk is a measure of how well the process is capable of producing within the specification limits.

• Cp an...read more

OEE can be calculated by multiplying Availability, Performance, and Quality percentages.

• Calculate Availability by dividing Operating Time by Planned Production Time.

• Calculate Performance by dividing Actual Production by Maximum Production.

• Calculate Quality by dividing Good Units by Total Units Produced.

• Multiply Availability, Performance, and Quality percentages to get OEE.

Major losses affecting OEE include availability, performance, and quality losses.

• Availability losses occur when equipment is not running due to breakdowns, changeovers, or lack of materials.

• Performance losses occur when equipment is running below its maximum speed or efficiency.

• Quality losses occur when defective products are produced and need to be scrapped or reworked.

• Other losses may include startup and shutdown los...read more

IATF stands for International Automotive Task Force and its current revised name is IATF 16949:2016.

• IATF stands for International Automotive Task Force

• Its current revised name is IATF 16949:2016

A capacitor is an electronic component that stores electrical energy in an electric field. It is used in various electronic circuits.

• Capacitors are used to filter out noise and stabilize voltage in power supplies.

• They are used in timing circuits, oscillators, and filters.

• Capacitors are also used in audio equipment to filter out unwanted frequencies.

• They can be found in electronic devices such as TVs, computers, and sma...read more