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.
Substantial additions of machines, measuring instruments, control apparatus,
and auxiliaries are being made regularly in order to keep the
equipment in the best order for laboratory work.
In addition to a supply from the University Power Plant the laboratory
is furnished from the Virginia Public Service Company through a
synchronous motor driving an alternator and three-wire direct current
generator, with two exciters, all 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. The entire laboratory wiring has been renewed and the
floors have been treated to eliminate dust. Universal plug and receptacle-connections
facilitate the setting up of all experimental combinations.
For the machine testing there are available two direct-current motor
generator sets with automatic push-button start and stop control complete,
several direct current motors and generators, series, shunt and compound;
steam-turbine-driven three-phase alternator with exciter and control switchboard;
experimental test set for alternating current single or polyphase
generator operation or induction motor testing; a second test set with
modern switchboard control panel and driving motor with automatic start,
stop, and reverse equipment; single-phase repulsion-induction motor; two-and
three-phase induction motors; double-current generator; several pairs
of constant potential transformers; current transformer for constant current
service; mercury arc rectifier set; Prony brakes for all motors; variable
resistances; variable inductances and capacities; meters for measuring
frequency, power factor, and indicators of synchronism and grounded circuits.
A complete three-element oscillograph set with all accessories is
available.
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.
