MARK EXHAUST SYSTEMS Interview Questions, Process, and Tips

The 2nd law of thermodynamics states that the total entropy of a closed system always increases over time.

• Entropy always increases in a closed system

• Heat cannot flow from a colder to a hotter body without external work being done

• The law explains why perpetual motion machines are impossible

Thread, bearing, and gear are mechanical components commonly used in manufacturing.

• Thread is a helical structure used to fasten objects together.

• Bearing is a component that reduces friction between moving parts.

• Gear is a mechanical component used to transmit power and motion between rotating shafts.

• Threads are commonly found on screws, bolts, and nuts.

• Bearings are commonly found in machinery such as engines and turbine...read more

The SI unit of stress is Pascal (Pa) and the SI unit of strain is dimensionless.

• Stress is defined as force per unit area and is measured in Pascals (Pa)

• Strain is defined as the change in length per unit length and is dimensionless

• Other units of stress include N/m², kg/m², and bar

• Other units of strain include percentage, millimeters per meter, and micrometers per meter

Inprocess refers to the ongoing production stage of a product.

• Inprocess refers to the stage of production where the product is being made or assembled.

• It is the stage between raw materials and finished product.

• Visual quality inspectors may inspect products at various inprocess stages to ensure quality standards are met.

Final inspection is the last stage of quality control process to ensure that the product meets the required standards.

• It is done after all the manufacturing processes are completed

• It involves checking the product for defects, damages, and deviations from specifications

• It ensures that the product meets the customer's requirements and expectations

• It may involve functional testing, visual inspection, and documentation rev...read more