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65 Cards in this Set
- Front
- Back
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What is a push or pull
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force
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What is mass times acceleration
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force
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mass is the total amount of
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matter
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weight is th measure of
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gravity
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Torque is the force like quantity in
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rotational mechnical systems
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Torque is measured in
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Nm(SI) ft/lb(english)
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when force acts in the same direct, the________ is the sum of two forces.
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net force
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The prime mover are
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pressure difference
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Density is found by dividing _______, and _________
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mass, volume
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A hydrometer is used to measure
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density
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Pressure is found by dividing a unit of _____ by a unit of ____.
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force, area
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What is used to measure pressure difference.
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manometer
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there are two types of fluids
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hydraulic and pnuematic
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gases are___________ and liquids are not
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compressible
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Pressure increases with depth in a fluid bt is independent of
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volume
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what is absolute pressure measured with
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in a refference to a vaccum
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Weight density is the ratio of an objects wieght to its
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volume
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Volatge comes in
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two forms
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Dccurrent and accurrent are
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two forms of voltage
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voltmeters measure
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voltage difference
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multimeters measure
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voltage
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the positive or electrode in a battery is the
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anode
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the negative or electrode is the
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cathode
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Electrical circuits contain a source
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battery or ac power
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Temp. difference acts as a prime mover in
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thermal systems
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heat always moves from _____ regions to ______ regions
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warm to cold
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heat is a form of
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energy
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temp. is the measure of the average
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energy of motion
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themocouples use three wires of
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two different metals
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work is ___ times _____
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force, distance
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output work is the work done by the
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system
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input work is the work going into the
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system
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efficiency is ______work divided by _____work multiplied by 100%
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output and input
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Spring scales are used to measure
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input and output force
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In ______________ work is equal to torque times the angle through which the lever arms moves
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rotational mechanical systems
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one radian is equal to
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57.3 degrees
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linear mechanical work is performed when mass is moved in a______ line
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straight
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angular mechanical work is performed when a mass is moved around an ____ or _
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axis or rotation
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mechanical work causes an object to start moving stop and to
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change direction
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fluid work is equal to the pressure diffrence times the
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volume moved
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in a closed fluid system the fluid is
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reused
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there is no such thing as a
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linear or angular fluid work
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cross sectional area is found by
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multiplying 0.7854 by the diameter squared
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electrical work is
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volume times charge
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a coulomb is a quantity of charge equal to 6.25 times
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10 to the power of 18 electrons
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electrical charge can be calculated by multiplying
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amps by time
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basic unit of electrical charge is
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the joule
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a rate is a
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displacement divided ny elapsed time
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velocity is the measure of
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linear mechanical work
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velocity is a
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vector
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speed is similar to
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velocity
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angular rate is expressed in
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radians
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a stroboscope is used to measure
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angular rate
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there are _______ radians i one rev.
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6.28
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acceleration is the rate at which speed
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decreases and increases
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in fluid systems flow rate is the _____ of moved fluid in a given period of time
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volume
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viscosity is the quality of a substance related to its
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thickness
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electrical rate is the amount of _____ moved
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charge
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electrical current flow is symbolized by an
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i
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one milliampere is equal to
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1/1000 amps
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one microampere is equal to
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1 * 10^-6 amps
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an ammeter is used to meausre
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current
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hertz is a measure of
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frequency in alternating current
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an oscilloscope can measure
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frequency as well as voltage waveform
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heat flow rate is symbolized as
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Qh
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