Hydraulics

Question 1

What is the core principle requirement of hydraulic operations

Answer 1

Transmission of power (force) to remote location

Question 2

What are 2 methods of hydraulic transmission

Answer 2

1. Liquid
2. Gas

Question 3

What law defines the principles of pressure being transmitted withn an enclosed vessel

Answer 3

PASCALS LAW

Question 4

What is the formula for determining force for a given cylinder head under a given pressure

Answer 4

P F A
Pressure = Force / Area

Question 5

What are 8 good hydraulic oil properties

Compressible || Incompressible || Thermal Stability
High Viscosity || Good librication || Low Viscosity
Corrosive || Mineral || Non Corrosive
High emulsifying || Low Volatility || Low emulsifying
Compatibility with metals || Compatibility with rubber/plastic

Answer 5

1. Incompressible
2. Thermal Stability
3. Good Lubrication
4. Low Viscosity
5. Low Volatility
6. Low emulsifying properties
7. Non-corrosive
8. Compatibility with seal materials (rubber/plastic)

Question 6

What is the primary function;

Reservoir

Answer 6

Holds reservoir of hydraulic fluid

Question 7

What is the primary function;

Pump

Answer 7

Provides system pressure

Question 8

What is the primary function;

Accumulator

Answer 8

Pressure store

Can provide time limited pressure following pump failure

Question 9

What is the primary function;

Selector Valve

Answer 9

Directs pressurised fluid

Question 10

What is the primary function;

Actuator

Answer 10

Contains hydraulic piston

Does the physical movement/work

Question 11

What is the primary function;

T & P Gauges

Answer 11

Temperature and Pressure Gauges

Question 12

What are the 6 core components of a basic hydraulic system

Answer 12

1. Reservoir
2. Pump
3. Accumulator
4. Selector Valve
5. Actuator(s)
6. T & P Gauges