HYDRAULICS AND PNEUMATICS

Hydraulic systems use ________ to transfer force from one point to another.

• Air

• Liquid

• Solid

• Gas

The basic idea behind any hydraulic system is very simple: Force that is applied at one point is trasmitted to another point using________

• A compressible fluid

• An incompressible fluid

• A cold compress

• A hot compress

The scientific principle that makes hydraulic systems possible is

• The fluid flow principle

• Bernoulli’s principle

• Pascal’s principle

• Boyle’s law

Property of fluid that describes its internal resistance is known as

• Viscosity

• Friction

• Resistance

• internal energy

Kinematic viscosity is defined as equal to.......

• Dynamic viscosity x density

• Dynamic viscosity/density

• Dynamic viscosity x pressure

• Pressure x density

What does the subject of pneumatics study ?

• The study of converting wind energy into electrical energy

• The study of compressed gas energy converting to mechanical energy

• The study of liquid energy converting to mechanical energy.

• Non of the above

Once the compressed air energy has been converted to mechanical energy, where does the air return to ?

• Back to the tank or reservoir

• Back to the atmosphere

• Back to the compressor

• Non of the above

The air used in a pneumatic system is

• Totally in compressible

• Totally compressible

• Only compressible when mixed with water

• Only compressible when mixed with oil.

Which industry are pneumatic systems mostly used in ?

• Food production industry

• Steel industry

• Education industry

• Oil and Gas industry

What is the most dangerous element that can affect an air compressor ?

• Nitrogen

• Dust

• Oil

• Water