Electrical Transformers and Rotating Machines
4th Edition
ISBN: 9781305494817
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 2, Problem 6RQ
Into how many time constants is an exponential curve divided?
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1. Suppose identical solid spheres are distributed through space in such a way that their
centers are lie on the points of a lattice, and spheres on neighboring points just touch
without overlapping. (Such an arrangement of spheres is called a close-packing
arrangement.) Assuming that the spheres have unit density, show that the density of a
set of close-packed spheres on each of the four structures (the "packing fraction") is:
fcc:
bcc:
√√2/6=0.74
√√3/8=0.68
SC:
π/6=0.52
√√3/16=0.34
diamond:
Chapter 2 Solutions
Electrical Transformers and Rotating Machines
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