MMET 401 Final Exam Questions with Correct Answers Latest Update 2025/2026
Professional certifications are valid for up to ____ years - Answers 5
Fluid in a closed fluid power system exerts ___ equally in all directions - Answers Pressure
___ system applications consist of equipment used to move light loads typically less than 100
lbs - Answers pneumatic
An ___ system uses gas under pressure - Answers pneumatic
____ is environmentally nonhazardous hydraulic fluid that is composed of synthetic chemicals
and vegetable - based oil - Answers bio-hydraulic fluid
_____ system uses liquid under pressure - Answers hydraulic
___ is technology using fluid to transmit power from one location to another - Answers fluid
power
___ indicates the rate that work is done - Answers Power
Pressure is typically measured in psi, bars, and __ - Answers kilopascals
Most pump manufacturers recommend a vacuum rating less than or equal to __ in. Hg. -
Answers depends on pump design
A__ consist of a glass tube completely filled with mercury and closed on one end - Answers
barometer
__ energy os the energy of motion - Answers kinetic
A common form of inefficiency in a fluid power system is __ - Answers Leaks, resistance
__ is anything that changes or tends to change the state of rest or motion of a body - Answers
Force
Fluid mechanics is comprised of static energy and ___ energy - Answers Kinetic
Energy from gears belts or pulleys is an example of __ energy. - Answers mechanical
the __ pressure gauge is most commonly used fluid power gauge in industry - Answers bourdon
tube
____ pressure is amount of pressure above the existing atmospheric pressure and is used to
measure pressure inside closed fluid power system - Answers Gauge
___ is the useful amount of output energy from a fluid power system compared to the amount of
input energy - Answers fluid power system efficiency
,____ pressure is equal to the sum of gauge pressure and atmospheric pressure - Answers
absolute
Pressure in a hydraulic system is the resistance to ___ - Answers fluid flow
__ is used in a hydraulic system to allow fluid from reservoir to travel into the pump - Answers
vacuum
Hydraulic pressure is created when fluid floe from a hydraulic pump meets ___ - Answers
resistance
___ pressure is created by the weight of the atmosphere at sea level under standard air
conditions - Answers atmospheric
Cylinders and motors in a fluid power system are considered __ - Answers actuators
_ is the amount of weight in pounds that a fluid power system must produce to move an object -
Answers exerted force
__ must be overcome to perform work. - Answers resistance
Fluid power system energy transmission is based on efficiency, power, and __ - Answers work
__ is the force that stops, slows, or restricts the movement of fluid - Answers resistance
__ states that when a force is applied to a confined fluid, the force is felt throughout the fluid
undiminished - Answers Pascal's law
A __ valve protects a fluid power system from overpressure by setting max operating pressure -
Answers relief
Two types of mechanical accumulators include weight and ___ loaded - Answers spring
in a hydraulic cylinder, fluid flow is produced by a __ - Answers pump
___ is the amount of fluid that passes a given point in one minute. - Answers flow rate
A __ is a vessel in which fluid is stored under pressure for future release of energy - Answers
Accumulator
__ is the ability to hold or contain something - Answers capacity
by controlling __ and pressure, hydraulic system can produce a large amount of work - Answers
fluid flow
Pressure ___ is the pressure difference between two points in a fluid power system. - Answers
drop
, __ fluid flow is present in systems where pipes, tubes and hoses may be too small for the
system - Answers turbulent
A __ flow meter has high internal resistance to fluid flow - Answers weighted
__ accumulators are typically small and lightweight with capacities up to 1 gal - Answers
diaphragm gas-charged
An __ diagram is a graphic representation of how devices interconnect within a fluid power
system - Answers
On a schematic diagram, __ lines are used to represent pilot lines. - Answers dashed
An __ is a device that controls the pressure, direction, and/or rate of fluid flow - Answers valve
___ flow has an erratic non layered pattern - Answers turbulent
___ pressure is the pressure of compressed gas in an accumulator prior to the - Answers
precharge pressure
A__is a metal sleeve used for joining one piece of tubing to another - Answers ferrule
a __ diagram is also referred to as a graphic diagram - Answers schematic
__ flow has a smooth and continuous layered pattern - Answers laminar
an __ is a device that converts low-pressure, high flow rate fluid to high -pressure, low-flow rate
fluid - Answers hydraulic power unit
A__ allows the force applied on one cylinder to be increased on another cylinder - Answers force
manipulation system
A __ measures the flow of hydraulic fluid within a system - Answers flow meter
___ is the size of a space or chamber measured in cubic units. - Answers volume
An___ is a self contained unit that includes all the components required to create flow, regulate
pressure, and filter hydraulic fluid - Answers hydraulic power unit
A __ is a test instrument used to measure fluid viscosity - Answers Saybolt viscometer
velocity increases__ times to maintain a constant rate of fluid flow if the diameter of a
conductor is halved. - Answers four
The standard flare angle for hydraulic tubing fittings is __ from the centerline. - Answers 37
A _ mark is a mark used as a guide to join to parts together. - Answers witness
_ is the speed of fluid flow through a hydraulic line - Answers Velocity
Professional certifications are valid for up to ____ years - Answers 5
Fluid in a closed fluid power system exerts ___ equally in all directions - Answers Pressure
___ system applications consist of equipment used to move light loads typically less than 100
lbs - Answers pneumatic
An ___ system uses gas under pressure - Answers pneumatic
____ is environmentally nonhazardous hydraulic fluid that is composed of synthetic chemicals
and vegetable - based oil - Answers bio-hydraulic fluid
_____ system uses liquid under pressure - Answers hydraulic
___ is technology using fluid to transmit power from one location to another - Answers fluid
power
___ indicates the rate that work is done - Answers Power
Pressure is typically measured in psi, bars, and __ - Answers kilopascals
Most pump manufacturers recommend a vacuum rating less than or equal to __ in. Hg. -
Answers depends on pump design
A__ consist of a glass tube completely filled with mercury and closed on one end - Answers
barometer
__ energy os the energy of motion - Answers kinetic
A common form of inefficiency in a fluid power system is __ - Answers Leaks, resistance
__ is anything that changes or tends to change the state of rest or motion of a body - Answers
Force
Fluid mechanics is comprised of static energy and ___ energy - Answers Kinetic
Energy from gears belts or pulleys is an example of __ energy. - Answers mechanical
the __ pressure gauge is most commonly used fluid power gauge in industry - Answers bourdon
tube
____ pressure is amount of pressure above the existing atmospheric pressure and is used to
measure pressure inside closed fluid power system - Answers Gauge
___ is the useful amount of output energy from a fluid power system compared to the amount of
input energy - Answers fluid power system efficiency
,____ pressure is equal to the sum of gauge pressure and atmospheric pressure - Answers
absolute
Pressure in a hydraulic system is the resistance to ___ - Answers fluid flow
__ is used in a hydraulic system to allow fluid from reservoir to travel into the pump - Answers
vacuum
Hydraulic pressure is created when fluid floe from a hydraulic pump meets ___ - Answers
resistance
___ pressure is created by the weight of the atmosphere at sea level under standard air
conditions - Answers atmospheric
Cylinders and motors in a fluid power system are considered __ - Answers actuators
_ is the amount of weight in pounds that a fluid power system must produce to move an object -
Answers exerted force
__ must be overcome to perform work. - Answers resistance
Fluid power system energy transmission is based on efficiency, power, and __ - Answers work
__ is the force that stops, slows, or restricts the movement of fluid - Answers resistance
__ states that when a force is applied to a confined fluid, the force is felt throughout the fluid
undiminished - Answers Pascal's law
A __ valve protects a fluid power system from overpressure by setting max operating pressure -
Answers relief
Two types of mechanical accumulators include weight and ___ loaded - Answers spring
in a hydraulic cylinder, fluid flow is produced by a __ - Answers pump
___ is the amount of fluid that passes a given point in one minute. - Answers flow rate
A __ is a vessel in which fluid is stored under pressure for future release of energy - Answers
Accumulator
__ is the ability to hold or contain something - Answers capacity
by controlling __ and pressure, hydraulic system can produce a large amount of work - Answers
fluid flow
Pressure ___ is the pressure difference between two points in a fluid power system. - Answers
drop
, __ fluid flow is present in systems where pipes, tubes and hoses may be too small for the
system - Answers turbulent
A __ flow meter has high internal resistance to fluid flow - Answers weighted
__ accumulators are typically small and lightweight with capacities up to 1 gal - Answers
diaphragm gas-charged
An __ diagram is a graphic representation of how devices interconnect within a fluid power
system - Answers
On a schematic diagram, __ lines are used to represent pilot lines. - Answers dashed
An __ is a device that controls the pressure, direction, and/or rate of fluid flow - Answers valve
___ flow has an erratic non layered pattern - Answers turbulent
___ pressure is the pressure of compressed gas in an accumulator prior to the - Answers
precharge pressure
A__is a metal sleeve used for joining one piece of tubing to another - Answers ferrule
a __ diagram is also referred to as a graphic diagram - Answers schematic
__ flow has a smooth and continuous layered pattern - Answers laminar
an __ is a device that converts low-pressure, high flow rate fluid to high -pressure, low-flow rate
fluid - Answers hydraulic power unit
A__ allows the force applied on one cylinder to be increased on another cylinder - Answers force
manipulation system
A __ measures the flow of hydraulic fluid within a system - Answers flow meter
___ is the size of a space or chamber measured in cubic units. - Answers volume
An___ is a self contained unit that includes all the components required to create flow, regulate
pressure, and filter hydraulic fluid - Answers hydraulic power unit
A __ is a test instrument used to measure fluid viscosity - Answers Saybolt viscometer
velocity increases__ times to maintain a constant rate of fluid flow if the diameter of a
conductor is halved. - Answers four
The standard flare angle for hydraulic tubing fittings is __ from the centerline. - Answers 37
A _ mark is a mark used as a guide to join to parts together. - Answers witness
_ is the speed of fluid flow through a hydraulic line - Answers Velocity
