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50 Cards in this Set
- Front
- Back
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force equals...
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mass times acceleration
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a force is a ..
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push or pull that causes a change in shape or motion
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mass is the total amount of what..in an object its meassuerd in grams or lb.mass
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matter
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weight is the measurement of..
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gravity times mass
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this is a force like quanity in rotational mechanical system meassuerd in n.m si or in lb.ft
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torque
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whean forces act in the same dirrection the .....is the sum of both forces
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net force
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what are the prime movers in fluid,electrical, and thermal systems
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preesure differece,voltage, and tempeture difference.
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what is found by dividing mass by volume.
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density
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what is a hydrometer used to messure..
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density or specific gravity in liquids
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what is meassuerd by dividing a unit of force by a unit of area. includes p.s.i
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pressure
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manometeres are used to meassure..
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pressure differences
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the two types of fluid are..
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hydraulic (using liquids) (and pneumatic (using gas)
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gasses are..... liquids are not..
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compressible
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what increases with depth in fluid but is independent in volume
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pressure
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absolute pressure
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is the meassure prressure diffrences
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what is weight density..
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the ratio of an objects weight to its volume the weight density of water i 62.4
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what comes in two forms and how..
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voltage..(a.c) (d.c) (d.c)=comes from batteries and (a.c)=comes from is alternating current of electrons that move back and fourth
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voltmeters.
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measure voltage difference
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multimeters
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messures voltage amprees and resistance (in ohms)
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the positive pole(tip) oe electrode in a battery is....
whats the negative pole.. |
the anode..the cathode
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what do electrical circuits contain..
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a source(battery),conducters(wires for transmison of electricity),and a load (light bulb) also may contain a switch
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.......acts as a prime mover in thermal systems because heat allways moves from warmer regions to cooler regions
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tempeture difference
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a form of energy charecterized by the vibrating movement of atoms and molecules.
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heat
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what is tempeture.
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its the mesure of average energy of motion of molecules in a substance
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what uses three wiers of two different meatels to measure temoeture..
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thermocouples
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what does work =....
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force(or force like quanitys) times the distances (or a displacment like quanity)
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what is the work going into the system...
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input work (done by a human or a motor)
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what is work done by the system(computer)
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output work
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.......is divided by output work divided by input work multiplied by 100 (efficancy cannot exceed 100%)
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efficiency
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what are used to measure input and output force...
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spring scales
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in rotational mechanical system .....is equal to torque multiplied by the angel throught wich arm moves.
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work
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what is the basic english unit of work..
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foot/pound
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in rotational mechanical system .....is equal to torque multiplied by the angel throught wich arm moves.
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work
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the basic SI unit of work is the .....
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newton/meter (1n.m=1joule)
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what is the basic english unit of work..
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foot/pound
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linear mechanicak work is preformed whean what....
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a mass is moved in a straight line
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the basic SI unit of work is the .....
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newton/meter (1n.m=1joule)
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angular mechanical work is done whean...
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a mass is moved around an axis or rotation.
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linear mechanicak work is preformed whean what....
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a mass is moved in a straight line
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mechanical work causes an object to what...
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start moving stop moving or change direction
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what is fluid work equal too....
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its equal to the presure difference times the volume moved (w=dpTIMESv)
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angular mechanical work is done whean...
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a mass is moved around an axis or rotation.
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whean givin the height a fluid is raised you must also know the ...........of the fluid in order to calculate the fluid work
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weight density
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in a hydraulic brake system what happens to the fluid
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the fluid is reused
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mechanical work causes an object to what...
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start moving stop moving or change direction
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is linear and angular.. a fluid work..
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no thears no such thing
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what is fluid work equal too....
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its equal to the presure difference times the volume moved (w=dpTIMESv)
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whean givin the height a fluid is raised you must also know the ...........of the fluid in order to calculate the fluid work
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weight density
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in a hydraulic brake system what happens to the fluid
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the fluid is reused
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is linear and angular.. a fluid work..
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no thears no such thing
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