USPS 955
# Term Definition
1 Roots-type pump A positive displacement pump that uses two 90°
helical twisted rotors and triangular shaped
sealing lines. Has a low pulsation rate and gentle
performance. Produces continuous even flow
with equal volume.
2 Pnuematics The study of the mechanical properties of gases
3 Peristaltic pump A positive displacement pump that uses a rotor
to compress part of a flexible tube to force fluid
to move through it. [Hint: Think swallowing]
4 Hydraulic motor A mechanical device that converts hydraulic
pressure and flow into torque and angular
displacement
5 Kinetic energy Energy of an object in motion
6 Progressing cavity pump A positive displacement pump that uses gears
the fluid moves by getting trapped in the gear
teeth
7 Power is The rate at which energy is expended
8 Friction is The force that opposes the motion of two object
which are in contact can be reduce by ball
bearings and lubricants but not completely
removed
9 Pumps A device that are used to move fluids physically
or mechanically. Fluids like gases, liquids, or
slurries
10 The area of 2 pistons Pie (3.14) * radius squared
11 Pump cavitations Process in which bubbles form and implode
violently can low head pressure, pitted rotor/
impellors and pumps to jack hammer
12 Hydraulic fluids Incompressible fluids in which power is
transferred typically based on mineral oil or
water
, USPS 955
# Term Definition
13 Work is (equation) Force * distance
14 What type of saw is used to cut Hacksaw
heavy metal stock?
15 If the driver gear is meshed with Driver gear must be larger then the driven gear
the driven gear and an increase in
speed is desired then the
16 Flux Is an acid used to remove oxidation on
components
17 Soldering Permanently joining metals together by melting
and flowing a filler metal into the joint.
18 Two types of flux and their uses Acid core (used for metal mending) Rosin core
(used in electronics)
19 When force and mass is tripled on Stays the same
an object what does acceleration
do?
20 Centrifugal pump A rotodynamic pump that uses a rotating
impeller to increase the pressure and flow rate of
a fluid. Most common type to move fluids
through a pipe system. Most often associated
with radial flow type
21 Hydraulics The study of the mechanical properties of fluids.
Used for the generation, control and
transmission of power by using pressurized
liquids.
22 The most commonly used Reciprocation double acting Rotary screw
compressors are: Centralfugal
23 The formula for power is Force × distance ÷ time
24 Benefits Hydraulic vs pneumatics Hydraulics : energy is not absorbed by medium.
Can move heavier loads at higher levels of force.
Pneumatics:Common components/ simple
design The liquid (inert gas) can be used and
stored after power loss. Less damaging to
components
# Term Definition
1 Roots-type pump A positive displacement pump that uses two 90°
helical twisted rotors and triangular shaped
sealing lines. Has a low pulsation rate and gentle
performance. Produces continuous even flow
with equal volume.
2 Pnuematics The study of the mechanical properties of gases
3 Peristaltic pump A positive displacement pump that uses a rotor
to compress part of a flexible tube to force fluid
to move through it. [Hint: Think swallowing]
4 Hydraulic motor A mechanical device that converts hydraulic
pressure and flow into torque and angular
displacement
5 Kinetic energy Energy of an object in motion
6 Progressing cavity pump A positive displacement pump that uses gears
the fluid moves by getting trapped in the gear
teeth
7 Power is The rate at which energy is expended
8 Friction is The force that opposes the motion of two object
which are in contact can be reduce by ball
bearings and lubricants but not completely
removed
9 Pumps A device that are used to move fluids physically
or mechanically. Fluids like gases, liquids, or
slurries
10 The area of 2 pistons Pie (3.14) * radius squared
11 Pump cavitations Process in which bubbles form and implode
violently can low head pressure, pitted rotor/
impellors and pumps to jack hammer
12 Hydraulic fluids Incompressible fluids in which power is
transferred typically based on mineral oil or
water
, USPS 955
# Term Definition
13 Work is (equation) Force * distance
14 What type of saw is used to cut Hacksaw
heavy metal stock?
15 If the driver gear is meshed with Driver gear must be larger then the driven gear
the driven gear and an increase in
speed is desired then the
16 Flux Is an acid used to remove oxidation on
components
17 Soldering Permanently joining metals together by melting
and flowing a filler metal into the joint.
18 Two types of flux and their uses Acid core (used for metal mending) Rosin core
(used in electronics)
19 When force and mass is tripled on Stays the same
an object what does acceleration
do?
20 Centrifugal pump A rotodynamic pump that uses a rotating
impeller to increase the pressure and flow rate of
a fluid. Most common type to move fluids
through a pipe system. Most often associated
with radial flow type
21 Hydraulics The study of the mechanical properties of fluids.
Used for the generation, control and
transmission of power by using pressurized
liquids.
22 The most commonly used Reciprocation double acting Rotary screw
compressors are: Centralfugal
23 The formula for power is Force × distance ÷ time
24 Benefits Hydraulic vs pneumatics Hydraulics : energy is not absorbed by medium.
Can move heavier loads at higher levels of force.
Pneumatics:Common components/ simple
design The liquid (inert gas) can be used and
stored after power loss. Less damaging to
components
