Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
32 Cards in this Set
- Front
- Back
|
What term is used to describe the amount of force distributed over each unit on the area of an object? |
Pressure |
|
|
Practically all pumps fall within what categories |
Rotary, reciprocating, centrifugal |
|
|
Rotary pumps operate on which displacement principal |
Positive |
|
|
Which pump will deliver a constant volume of fluid at any given rpm |
Gear |
|
|
The inlet port of a vein pump is located in that part of the pump where the chambers are____in size |
Expanding |
|
|
In a vain pump what keeps the veins in contact with the outer side of the pump |
Centrical force |
|
|
Which type of pump is used for applications requiring high pressures and accurate control of discharge volumes |
Reciprocating |
|
|
The volume output of the constant volume piston pump is determined by the angle between the driveshaft and what other component |
Cylinder block |
|
|
One advantage of the variable volume pump is that it eliminates the need for a system____ |
Pressure regulator |
|
|
How many different designs of hand pumps are there |
2 |
|
|
Since linear motion is a back-and-forth motion along a straight line, the cylinder type actuator is also referred to as a____ |
Linear motor |
|
|
The single acting ram applies force and how many directions |
One |
|
|
What type of directional control valve is used to control the single action piston type cylinder? |
Three-way |
|
|
The speed of the rotation of the pump is controlled by what device |
Length of the piston |
|
|
What is another name for the tilting plate of the piston type hydraulic motor |
Swashplate |
|
|
Valves are included in a hydraulic system to control what points |
Direction, volume, pressure |
|
|
What type of valve is probably the most common type of valve element used in directional control valves |
Sliding spool |
|
|
What type of gas is commonly used in gas charged accumulators |
Air and nitrogen |
|
|
What type of hydraulic system has fluid flow but no pressure in the system |
Open center |
|
|
What type of hydraulic system has fluid stored under pressure whenever the pump is operating |
Close center |
|
|
Before you reassemble a hydraulic pump you must lubricate all internal parts with what material |
Hydraulic fluid |
|
|
What color will decomposing hydraulic fluid turn |
Darker |
|
|
What are three common types of rotary pumps |
Gear, lobe, veins |
|
|
A rotary pump is what type of displacement principal and what type of displacement type |
Positive displacement principal and fixed displacement type |
|
|
What is Pasqual's law |
Pressure applied anywhere on a confined fluid is transmitted undiminished in every direction |
|
|
In a gear pump the drive gear is turned by the____shaft |
Driveshaft |
|
|
Fluid power motor is the device that converts___power to___motion and force |
Fluid power to rotary motion or force |
|
|
What is the purpose of a selector valve |
Control the direction of fluid flow |
|
|
What material is a poppet valve usually made of |
Steel |
|
|
On____vent in a reservoir allows air to be drawn in and pushed out by the reservoirs ever-changing fluid level |
Air vent or air breather |
|
|
On_____stores a volume of liquid under pressure for conversion into useful work or to absorb rapid fluid pulstations |
Accumulator |
|
|
What are two types of accumulators |
Spring operated and gas operated |
