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20 Cards in this Set
- Front
- Back
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Work equals ______ times ______
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force, distance
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________ is work going into a system
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input work
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_______ is work done by the system
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output work
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________ equals output work divided by input work times 100 percent
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efficiency
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Spring scales measure _______ and _________ force
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input, output
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The basic English unit of work is what?
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the foot pound
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____________ is performed when a mass is moved around an axis or rotation
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Angular Mechanical Work
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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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Fluid work = what?
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pressure difference times volume moved
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When given the height of a fluid raised, you must also know the __________ of the fluid in order to calculate fluid work
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weight density
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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 inear or angular fluid work, true or false?
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true
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The pressure exerted by a piston multiplied by the area of the piston face equals what?
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the work done by the piston
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THe cross-sectional area of a cylender can be found by multiplying ________ by the diameter squared
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.7854
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__________ is done when a voltage moves a specified amount of electrical charge
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electrical work
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A coulumb equals what?
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6.25 times 10 raised to the 18th electrons
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Electrical charge can be calculated by multiplying what by what?
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amperes, time
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The basic unit of electrical work is the _______
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Joule
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_______ performed by an elctrical pump, or motor will be given in joules
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Input work
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Efficiency can not exceed 100 percent, true or false
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true
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