0681506350
NST2602:
Natural Science and Technology for
Classroom 4
Unique: 735175
Assignment 3 Year Module 2022
Due: 12 August 2022
, QUESTION 1
1.1. Give the analyses of the two dominant systems you would wish to install in your workshop. (4)
Hydraulic Systems:
Mechanisms operated by the resistance offered or the pressure transmitted when a liquid is forced
through a small opening or tube. Hydraulics enable the operator to accomplish significant work (lifting
heavy loads, turning a shaft, drilling precision holes, etc.) with a minimum investment in mechanical
linkage through the application of Pascal’s law, which states:
“Pressure applied to a confined fluid at any point is transmitted undiminished throughout the fluid in all
directions and acts upon every part of the confining vessel at right angles to its interior surfaces and
equally upon equal areas
Examples of Hydraulics Systems: Jaws of Life, dump truck lifts, water guns, forklifts, cranes, etc.
Pneumatic Systems:
A pneumatic system is a system that uses compressed air to transmit power. Usually, a centrally located
compressor provides power to cylinders, rotary actuators, and other pneumatic devices through a system
of tanks, pipes and valves. The compressor sucks in air from the atmosphere, reduces its volume by
compression (increasing its pressure) and then stores it in a high-pressure tank. This compressed air can
then be released to do work by acting on a piston (in a cylinder) or vane (rotary actuator/pneumatic
motor).
Examples of Pneumatic Systems:
• Air compressors and air brakes
• Air compressors and air brakes
• Pneumatic tools: Jackhammer, nail gun
• HVAC control systems
1.2. State with reasons the differences that exist between the systems in 1.1. (4)
HYDRAULIC SYSTEMS PNEUMATIC SYSTEMS
Hydraulics is liquid Pneumatics is gas
Hydraulic systems use liquids like water and Where pneumatic systems use air to
oil to transmit power. transmit power.
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