Brain Candy Interview Questions and Answers

There are various types of seals used in hydraulics and pneumatic systems.

• O-rings: commonly used in both hydraulic and pneumatic systems

• Piston seals: used to prevent fluid leakage in hydraulic systems

• Rod seals: used to prevent fluid leakage in hydraulic systems

• Wiper seals: used to prevent contaminants from entering hydraulic or pneumatic systems

• Rotary seals: used in rotary applications to prevent fluid leakage

• V-ring seals: used in dynamic axial sealing applications

• Gaskets: us...read more

There are various types of hydraulic valves used in different applications.

• Directional control valves: used to control the direction of fluid flow in a hydraulic system.

• Pressure control valves: used to regulate the pressure of the hydraulic fluid.

• Flow control valves: used to control the flow rate of the hydraulic fluid.

• Check valves: used to allow fluid flow in one direction and prevent backflow.

• Relief valves: used to protect the hydraulic system from excessive pressure.

• Propor...read more

I have worked with various types of machines including pumps, compressors, turbines, and conveyors.

• Pumps: Centrifugal pumps, reciprocating pumps

• Compressors: Reciprocating compressors, rotary screw compressors

• Turbines: Steam turbines, gas turbines

• Conveyors: Belt conveyors, screw conveyors

Types of pumps include centrifugal pumps, reciprocating pumps, and rotary pumps.

• Centrifugal pumps use centrifugal force to move fluid through a rotating impeller.

• Reciprocating pumps use a piston or diaphragm to create pressure and move fluid.

• Rotary pumps use rotating mechanisms to transfer fluid, such as gear pumps or vane pumps.

Types of gears include spur gears, helical gears, bevel gears, worm gears, and rack and pinion gears.

• Spur gears have straight teeth and are used in applications with low speed and high torque.

• Helical gears have angled teeth and provide smoother and quieter operation.

• Bevel gears have cone-shaped teeth and are used to transmit power between intersecting shafts.

• Worm gears consist of a worm and a worm wheel and are used for high reduction ratios.

• Rack and pinion gears convert rota...read more

Types of bearings include ball bearings, roller bearings, plain bearings, and fluid bearings.

• Ball bearings: use balls to reduce friction and support radial and axial loads

• Roller bearings: use cylindrical or tapered rollers to support heavy loads

• Plain bearings: use a sliding surface to support loads

• Fluid bearings: use a thin layer of fluid to support loads and reduce friction

Units of pressure include pascal, bar, atmosphere, and psi.

• Pascal (Pa) is the SI unit of pressure.

• Bar is a unit of pressure commonly used in Europe.

• Atmosphere (atm) is a unit of pressure commonly used in meteorology.

• Psi (pound per square inch) is a unit of pressure commonly used in the United States.

• Other units of pressure include torr, millimeter of mercury (mmHg), and kilopascal (kPa).