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Work, Energy, Power & Efficiency
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Gravity
-Mass, Weight & Force - Work, Energy & Power -Eff., Voltage Drop and Line Loss
Terms in this set (15)
Power
the rate of doing work
Power Formula
P=W/t, power(watts) = work(joules) / time(seconds)
Weight
the vertical force exerted by a mass as a result of gravity
Force
any influence that attempts to cause a change in relative motion of an object
Mass
a measure of the amount of substance contained by an object
Energy
the capacity to do work
Two basic forms of Energy
potential and kinetic
Work Formula
Work = Force (N) x Distance (m)
Force Formula
kg (mass) x N (9.81)
Efficiency Formula
Power (output)/ Power (output) + losses
Line Loss
the power dissipated along the conductors
[I²R Loss]
1 hP = _________ W?
1 hP = 746 W
Voltage Drop
Voltage dissipation along the conductors (to find the voltage across a load)
1 W =
1 J / 1 s
Work
transfer of energy that occurs when a force makes an object move; measured in joules
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