December 2012
Beginner
528 pages
17h 31m
English
Content preview from Introduction to Electrical Power and Power Electronics
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xxiii
Systems of Units and
Conversion Factors
Both the international units (SI or MKS system) and British units are used in this
book. The table below relates the international units with the British units commonly
used in the United States.
Category Value in SI Unit = Factor Below × Value in English Unit
Length m 0.3048 ft.
mm 25.4 in.
μm
25.4 mil
km 1.6093 mi.
km 1.852 nautical mi.
Area m
2
0.0929 ft.
2
μm
2
506.7 circular mil
Volume L (dm
3
) 28.3168 ft.
3
L 0.01639 in.
3
cm
3
16.3871 in.
3
m
3
/s 0.02831 ft.
3
/h
L 3.7853 gal. (U.S.)
L/s 0.06309 gal./min
Mass kg 0.45359 pound mass
kg 14.5939 slug mass
Density kg/m
3
16.020 lb. mass/ft.
3
kg/cm
3
0.02768 lb. mass/in.
3
Force ...
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