Fresenius Medical Care Senior Service Engineer Interview Questions and Answers

There are three types of heat transfer: conduction, convection, and radiation.

• Conduction is the transfer of heat through direct contact between objects or substances.

• Convection is the transfer of heat through the movement of fluids or gases.

• Radiation is the transfer of heat through electromagnetic waves, such as from the sun.

Laminar flow is smooth and orderly, while turbulent flow is chaotic and unpredictable.

• Laminar flow occurs at low velocities and is characterized by parallel layers of fluid moving in the same direction.

• Turbulent flow occurs at high velocities and is characterized by irregular fluctuations and mixing of fluid particles.

• Laminar flow is more energy-efficient and less noisy compared to turbulent flow.

• Examples: Laminar flow...read more

Generators work by converting mechanical energy into electrical energy through electromagnetic induction.

• Generators have a coil of wire that rotates within a magnetic field

• The rotation of the coil induces a current in the wire

• This current is then collected and transferred as electrical energy

• Examples include hydroelectric generators, wind turbines, and diesel generators

Various solvents are used in production engineering depending on the specific application, such as water, alcohols, hydrocarbons, and acids.

• Water is commonly used as a solvent for cleaning and rinsing processes.

• Alcohols like ethanol are used for dissolving oils, resins, and waxes.

• Hydrocarbons such as hexane are used for extracting oils and fats.

• Acids like sulfuric acid are used for pickling and cleaning metal surfaces.