ELECTRICAL ENGINEERING LABORATORY.
The Scott Laboratory of Electrical Engineering.—This laboratory was
initially equipped and endowed by Mrs. Frances Branch Scott, of Richmond,
Va., as a memorial to her late son, an alumnus of this University.
During the year 1910 the equipment was substantially increased through
the generosity of the Hon. Charles R. Crane, of Chicago, Ill., a friend of
the University. During 1912 still further substantial additions were made,
consisting of measuring instruments, auxiliary control apparatus, and more
particularly a steam-turbine-driven three-phase alternating-current generator
with exciter and control switchboard.
Within the past year very considerable additions have been made to the
equipment. The laboratory has been rearranged and rewired and a special
treatment has been used on the floors to eliminate dust. The newer apparatus
installed comprises a complete three-element oscillograph set with
the necessary accessories, two direct-current motor generator sets with
automatic push-button start and stop control complete, an experimental test
generator with modern switch board panel for its control and motor for
driving it equipped with automatic push-button start, stop and reverse control.
The latest apparatus installed now ready for use consists of a synchronous
motor driving an alternating current generator and a three-wire direct
current generator, with two exciters, on a common shaft. A complete three-panel
switchboard for the control of this set is equipped with full sets of instruments
and controls including a voltage regulator for the alternating current
generator.
In addition to full sets of electric meters with the appliances for testing
and calibrating them, galvanometers of the best modern types, standard
cells and resistances, standard condensers, and other pieces of apparatus
for minor tests, this laboratory contains numerous pieces of the very best
construction. Such are the Wolff potentiometer, the Seimens and Halske
Thomson double bridge, the Koepsel permeameter, the Station photometer
with Lummer-Brodhun screen, Macbeth illuminometer, the Carey-Foster
bridge and others. For the work in machine testing there are, in addition
to the newer equipment listed above, a number of direct-current generators
and motors, series, shunt and compound, an interpole motor, a double current
generator, a two-phase alternator, a General Electric experimental test
set for alternating current, comprising a generator furnishing single, two,
three, six or twelve-phase current, and, in addition, offering three types of
induction motors with all necessary starting and controlling devices, a single-phase
repulsion motor, a two-phase induction motor, two three-phase induction
motors, several pairs of constant voltage transformers, a constant current
transformer, frequency meters, power factor indicator, synchronism indicator,
ground detector and the auxiliary apparatus used in testing these
machines. The laboratory has been arranged with a system of universal
plug and receptacle-connections to facilitate the setting up of all experimental
combinations.
