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90 Cards in this Set
- Front
- Back
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Force=?x?
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mass times accerlation
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A force is a push or ?
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Pull
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Mass is?
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total amount of matter in an object
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Weight=?x?
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measurement of gravity times mass
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What is a hydrometer used to measure?
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density or specific gravity
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Gases are ?
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Compressible
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Liquids are not ?
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compressible
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Manometers are used to measure what?
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pressure difference
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Voltage comes in two forces, what are they?
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DC and AC
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Voltmeters measure?
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voltage difference
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Two types of fluids are?
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hydraulic and pneumatic
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Hydraulic is?
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using liquid
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Pneumatic is?
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using gas
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what uses three wires of two different metals to measure temperature?
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Thermocouples
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what measures voltage, amperage, and resistance?
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Multimeters
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Work = ?X?
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force times distance
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_______ work is done by the system.
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Output
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_______ work the work done by the systems.
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Input
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_____ _______ are used to measure input and output force
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Sping Scales
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____ _____ causes an object to start moving, stop moving, or change direction
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mechanical work
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______ _____ work is performed when a mass is moved around an axis or rotation
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angular mechanical
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_____ _____ work is performed when a mass is moved in a straight line
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linear mechannical
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The basic unit of work is?
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Joule
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____ ______ performed by an electrical pump or motor will be given in joules
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input work
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hydraulic brake system is an example of what?
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closed fluid system
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Efficiency is?
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output work divided input work, mulitipled by 100
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one radian =?
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57.3 degrees
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Coulombs are symboloized by what letter?
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Q
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The units cancel on what kind of charge?
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electrical
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1 joule= 1 volt X?
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coulomb
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rate is a displacement-like quanity divded by what?
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elapsed time
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_______ is the measure of linear mechanical work.
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velocity
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____ is similar to velocity
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speed
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there are 6.28 radians in what?
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1 revolution
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______ is the rate at which speed increases or decreases.
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accerlation
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what is another word for negative acceleration is?
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decerleration
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volume flow rate is symbolized by what letter?
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Qv
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Units for acceleration are?
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foot/second squared
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_____ measures angular rate?
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stroboscope
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units for linear mechanical rate are?
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foot per second
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electrical current flow is symbolized with what letter?
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"I"
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_____ is a measure of frequency in alrernating current?
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hertz
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_________ can meausure frequency as well as voltage waveform?
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oscilloscope
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_____ ______ is used to contain and store heat energy
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dewar flask
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Units of heat are?
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btu
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What are the two forms of resistance?
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drag and friction
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whats the equation for drag resistance?
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resistance = force divided by velocity
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whats another word for velocity?
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speed
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what is the opposite of turblulent flow?
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laminar flow
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what letters symbolized electrical resistance?
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Re
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What letters symbolized voltage difference?
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DV
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friction can be reduced by the addition of ?
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lubricants
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statis friction is always greater than what?
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kinetic friction
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_____ are materials such as copper.
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Conductors
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____ are materials such as plastic.
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Insulators
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R-vaule is also knowed as?
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R-factor
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______ ______ is the quality of a material that describes how well it transmits heat
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thermal conductivity
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_____ _____ is opposition to the flow of heat through a material
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thermal resistance
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_________ is the quality of a material that describes how much it permits electricity to flow through it
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resisitvity
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____-_____ are materials, such as silicon
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Semi-Conductors
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_____ is the ability to do work
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energy
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energy is used to overcome resistance in a system in lost in the form of ________?
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heat
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_____ _____ is energy stored in a mechanical , fluid, or electrical device
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potential energy
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_________ _________ _______ is energy in an object has because of its shape
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gravitational potential energy
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_____ _____ is the energy of motion possessed by moving a body
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kinetic energy
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________ is measured is farads
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capacitance
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_______ _________ in a system is equal to the sum of potential energy
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total energy
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_________ stands for electrical current flow
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"I"
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______ ______ is the potential energy and kinetic energy that are asssociated with position or movement of electrical charge
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Electrical energy
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thermal energy is connected to ____?
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work
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what stands for velocity?
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V
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what are the units of energy?
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btu & calories
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_______ is the transfer of heat energy by electromagentic radiation?
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radiation
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_____ is the transfer of heat energy by movement
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convection
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what does "m" stand for?
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mass
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What is the rate of doing work?
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power
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equation of power?
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p=work/time
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also can be expressed in what other equation?
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p=force*rate
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Power is measured in what english units?
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foot-pound/second
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Power is measured in what SI units?
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watts
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One watt is = to what?
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to one joule per second
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One _______ _______ is equal to 550 foot-pounds/second
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horse power
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1 horsepower = ?
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746 watts
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In fluids systems, ________ = pressure difference times flow rate
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power
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P=DP*??
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Qv
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P=T*?
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w
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the ____-_____ is a unit of energry, not power, because the time units cancel each other
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kilowatt-hour
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One watt = one volt times what?
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one amp
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P=V*?
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I
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Power equal torque time _______ rate
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angular
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