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70 Cards in this Set
- Front
- Back
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Force
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mass times acceration
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push ot pull
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is a force
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mass
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total amount of matter
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weight
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is measurment of gravity times mass
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torque
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force like quanitity in rotational mechical system
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net force
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sum of two forces
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prime movers
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pressure difference (fluid systems) voltage (electrical systems) temperture (thermal systems)
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density
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mass times volume
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hydrometer
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measure density or specific gravitity in fluids
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pressure
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unit of force divided by unit of area
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manometer
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measures pressure difference
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types of fluids
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hydrolic(liquid) and pneumatic(gas).
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gases are
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compressible
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liqids
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noncompressible
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ablsolute pressure
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measure in referenece to vacuum (zero pressure)
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weight density
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in ratio to an objects weight to its volume
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voltage
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comes in two forms direct current (DC) and alternating current (AC)
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voltometer
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measures voltage differnece
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multimeter
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measures voltage, amperage, and resistence
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electrical circuits
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contain a sorce of (battery), conducter (wires) , and a load (light bulb) switch (to turn it on)
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tempreture differnece
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acts as a prime mover in thermal systems because heat always moves from warmer rregions to cooler regions
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heat
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is a form of energy charecterized by the vibrating movement of atoms and molecules
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tempreture
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is the measurement of average energy of motion of molecules in a substance
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thermalcouples
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are three wires of two different metals to measure temperature
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degree symbol
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is the F and C when giving a temperature
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work
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force times distance
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inout work
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work being put into the system
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output work
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work done by the system
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efficiency
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is output work divided by input work multiplied by 100
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spring scales
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used to measure input and output work
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rotaional systems
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work is equal to times the angle of which the lever arm moves
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radian
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57.3 degress
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basic english unit
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ft lb
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si unit
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Nm or 1 joul
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linear mechical work
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mass moved in a straight line
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angular mechical work
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mass moved on an axis
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mechical work
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causes a object to start moving, stop moving, or to change direction.
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fluid work
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pressure difference times volume moved ( W= Dp*V) or (W=p*DV).
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closed fluid system
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fluid is reused such as a hydrolic brake.
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elictrical work
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is done by voltage being moved a specific amount
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rotaional systems
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work is equal to times the angle of which the lever arm moves
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radian
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57.3 degress
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basic english unit
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ft lb
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si unit
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Nm or 1 joul
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linear mechical work
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mass moved in a straight line
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angular mechical work
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mass moved on an axis
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mechical work
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causes a object to start moving, stop moving, or to change direction.
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fluid work
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pressure difference times volume moved ( W= Dp*V) or (W=p*DV).
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closed fluid system
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fluid is reused such as a hydrolic brake.
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elictrical work
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is done by voltage being moved a specific amount
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coulomb
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charge = 6.25 times 10to the 18th power.
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basic unit of electrical work
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one joul = 1 volt * coulomb
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input work done by a pump or motor
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will be given in jouls
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rate
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displacement times elapsed time.
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velocity
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measure of mechincal work
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speed
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similar to velocity, but its a scalar (no directinal rotation).
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angular rate
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expressed in si as rad per sec and in engish as rev per min.
6.28 rad in one rev (360 degrees) |
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strobe scope
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measures angular rate
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acceration
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rate at which speed increases or decreases.
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flow rate
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is the volume of fluid moved in a given period of time(Qv)
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viscosity
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thickness
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electrical rate
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amount of charge moved in coulombs
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milliampre
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1/1000amps
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microampre
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1*10 to the -6
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hertz
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measures frequnecy of alternating currents
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osilloscope
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measures voltage
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heat flow rate
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tranfering of heat.
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dewar flask
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used to contain and store energy
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thermocouple themometer
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measures heat flow
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resistence
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force times rate
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