During the last five years the demand for electrical
energy in the state of Oregon,and throughout the entire
country,has increased to such an extent that electrical
generating stations have become an important factor in the
economic development of the common wealth.
Uonsidering the great need for cheap power, which
is...
Samples of insulating materials used in the construction
of electrical machinery and apparatus are
tested for dielectric strength before such are accepted
for use. This is done by applying to the sample a
high voltage until it is pierced through by the electric
spark. This is a parallel case to...
The designing of electrical machinery is fully
as essential to the thorough understanding of power
equipment and apparatus, as is the taking of a laboratory
testing course. One learns the relationship
of the different parts, the methods of computing
their dimensions, and the predetermination of outputs,
efficiencies, etc. and thus...