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WorksheetsHydraulics Day1
Total questions: 60
Worksheet time: 3hrs 37mins
Choose The DRIVE PUMP.
Choose the CHARGE PUMP.
Choose the LIFT ARM CONTROL VALVE.
What is this schematic of?
Drive Motor
Drive Pump
Lift arm control Valve
Charge Pump
What is this schematic of?
Drive Motor
Drive Pump
Charge Pump
Relief Valve
What is this schematic of?
Drive Pump
Lift arm Control Valve
MRV
Charge Pump
Match the following
Charge Pump
Lift Arm Control Valve
Drive Pump
Drive Pump Schematics
Lift Arm Control Valve Schematics
What Component is this?
Charge Pump
Drive Pump
Drive Motor
Lift Control Valve
What component is labeled as "B"?
Pressure Relief Valve
Control Solinoid
Flow control Valve
Pressure control Valve
What Component is this?
Lift arm control Valve
Drive Control Valve
Flow control Valve
Drive Motor
In this picture MRV stands for?
Main Relief Valve
Main Regulator Valve
Motor Restraint Valve
Micro Resistor Volume Control
What component is pictured?
Drive motor
Fan Motor
Directional Drive Control
Lift Arm Control Valve
What Component is this?
Drive Motor
Drive Pump
Charge Pump
Fan Motor
What is component "B"?
Solinoid
Relief Valve
Directional drive Valve
Drive Pump
The basic idea behind any hydraulic system is very simple: Force that is applied at one point is tranitted to another point using________
A compressible fluid
An incompressible fluid
A cold compress
A hot compress
It's important for a hydraulic system to contain what?
Air bubbles
No air bubbles
Compressible fluid
Compressible gas
Where can you look on your car to see a good example of a basic piston-driven hydraulic system?
The power steering system
The instrument panel
The brake system
The radio system
The great thing about hydraulic systems is that the pipe connecting the two cylinders can be__________
Disconnected, yet still operate
Any length and shape
Filled with air
All of the above
Which one of the following is an example of a hydraulically operated machine?
A wheel barrow
A laptop computer
A bulldozer
A vacuum cleaner
It's very easy to add what to a hydraulic system?
Force multiplication
Force whole numbers
Force square roots
Force perimeter
Large hydraulic machines usually have these to hold the difference in the volume of oil displaced by the two sides of the cylinder
Large diameter lines
Men with buckets
External reservoirs
Extra piston
What is one of the best places to get up close with the large hydraulic machines?
At the local mall
A deli
A construction site
Farmers market
The coins - pennies, nickels, dimes, & quarters are all made with a hydraulic press
True
False
Which of the following sentence is true?
Gases are easy to squish
Liquids are easy to squish
Hydraulics is branch of science and engineering concerned with the use of liquids to perform___________
Electrical task
Magnetic task
Mechanical task
Electronic task
A ________ is a sliding plug that fits closely inside the bore of a cylinder
A jack
A piston
A valve
What is the main function of a directional control valve?
It prevents the pressure from reaching a critical level.
It allows the adjustment of pressure in a hydraulic line.
It controls flow rate and/or flow direction
It generates a force that can be applied to a load.
Complete the following sentence: "In a hydraulic system, the main purpose of filters is to keep __________ of the hydraulic fluid at a permissible level."
temperature
fluidity
contamination
pressure
Pressure-relief valves are used to
limit the minimum pressure in a system.
control the flow rate in a system.
limit the maximum pressure in a system
control the pressure in a system
Quick-connect fittings have a ____ valve built in.
Directional Control
Relief
Check
Sequence
Another name for a cylinder would be a(n) ____.
Power input device
Valve
Control device
Actuator
A pump produces ____.
Pressure
Flow
Flow and pressure
Pressure drop
Most hydraulic motors are modified designs of ____.
Cylinders
Pumps
Gears
Flow control valves
Pressure is created by the ____.
Pump
Reservoir
Resistance to flow
Flow meter
Pascal's law states that pressure in a confined fluid is equal and acts ____.
On flat surfaces
Perpendicular to all surfaces
Only at the bottom of the vessel
Only against the external load
The rod side area that produces the pull force on a double-acting cylinder is called the ____ area.
Piston
Cap
Rod
Annular
Check valves are used in hydraulics to ____.
Control flow
Control speed
Block flow
Control system pressure
These are used to start, stop and direct the flow of hydraulic fluid in the system.
valves
actuators
pump
reservoir
These are used to convert hydraulic energy back to mechanical energy.
valves
actuators
pump
reservoir
Pressure is directly proportional to force.
True
False
When exerting a small force over a small cross-sectional area, pressure can be transmitted to create a large force over a large cross-sectional area.
True
False
If an object is compressible it can be squeezed to fit into a smaller space than it normally does.
True
False
If an object is in-compressible it can also be forced to fit into a space smaller than it usually occupies.
True
False
Select the machine which does not use hydraulics.
All industrial hydraulic systems consist of the following basic components:
Power input device
Control Device
Liquid
Conductors
Power Output device
Hydraulic jack
Power input device
Control Device
Liquid
Power Output device
Power input device
Control Device
Liquid
Conductors
Power Output device
Power input device
Control Device
Power Output device
What does this symbol represent?
Ancient Cave Painting Symbol
Flow Meter
Check Valve
Hydraulic Flow Restrictor
What does this symbol represent?
Double acting cylinder
Fluid designator
Fluid pusher
Hydraulic pump
What is this ANSI symbol?
Fixed Displacement Hydraulic Pump
Variable Displacement Hydraulic Pump
Hydraulic Motor Fixed Displacement
Hydraulic Motor Variable Displacement
What is this ANSI symbol?
Fixed Displacement Hydraulic Pump
Variable Displacement Hydraulic Pump
Hydraulic Motor Fixed Displacement
Hydraulic Motor Variable Displacement
What is this ANSI symbol?
Fixed Displacement Hydraulic Pump
Variable Displacement Hydraulic Pump
Hydraulic Motor Fixed Displacement
Hydraulic Motor Variable Displacement
What is this ANSI symbol?
Electric Motor
Hydraulic Motor
Meter Valve
'Merica
What is this ANSI symbol?
Fixed Displacement Hydraulic Pump
Variable Displacement Hydraulic Pump
Hydraulic Motor Fixed Displacement
Hydraulic Motor Variable Displacement
What is the symbol pictured ?
Flow control valve
Double acting cylinder
Adjustable Pressure Relief Valve
Non Return Valve
What type of directional control valve is pictured here ?
3 way 3 position
4 way 3 position
2 way 2 position
5 way 3 position
How is a hydraulic ram similar to a syringe?
Both are used primarily in medical applications
Both use a piston inside a cylinder to function
Both are powered by electricity
Both use air pressure to operate
What are the two important features of fluids used in hydraulic systems?
Elasticity and viscosity
Compressibility and ability to transmit light
Incompressibility and ability to transmit pressure
Density and transparency
What must you do before working under a hydraulically suspended load?
Lower load if you can
Engage safety brace
Support load mechanically
All of the answers are correct
List two ways contamination can enter a hydraulic tank.
When topping up
Pump
Through breather
Motors
How does viscosity of a fluid change with higher temperatures?
Increases
Remains constant
Decreases
List three functions of a hydraulic tank
Store oil
Release heat
Deaerate oil
Increase flow
