hydraulics

Question 1

what are the principles of hydraulic systems?

Answer 1

• transmission of power to a remote location
• power transmission by liquid or gas
• Pascal’s Law

Question 2

what is Pascal’s Law?

Answer 2

• the pressure in an enclosed vessel acts at angles to the walls enclosing the fluid
• the pressure is transmitted equally and undiminished to all parts of the vessel

Question 3

what are the components of a basic hydraulic system? (6)

Answer 3

reservoir
pump
accumulator
selector valve
actuator
t & p

Question 4

what is the equation for pressure?

Answer 4

pressure = force / area

Question 5

what does the reservoir do?

Answer 5

hold hydraulic fluid

Question 6

what does the pump do?

Answer 6

provide system pressure

Question 7

what does the accumulator do?

Answer 7

pressure store that provides time-limited pressure if pump fails

Question 8

what does the selector valve do?

Answer 8

directs pressurised fluid to the correct device

Question 9

what does the actuator do?

Answer 9

contains hydraulic piston that does the physical movement

Question 10

what are t & p’s?

Answer 10

temperature and pressure gauges