Outlet.
The part of an electrolier or electric light fixture out of which the
wires are led for attachment of an incandescent light socket.
Output.
The rate of energy delivered or of work done by a machine. In the case
of a current generator it is the volt-coulombs per given second, or
better the volt-amperes delivered at its outer circuit terminals.
Output, Magnetic.
The analogue in a magnetic circuit of the output of an electric circuit.
It is the product of the magnetizing force by the induced magnetism.
Output, Unit of.
As a unit of output of a dynamo Prof. Sylvanus P. Thompson has proposed
1,000 watts, or one kilowatt. This unit is now frequently used. To
completely define the dynamo, however, the amperage or the voltage must
also be given, as a 10 kilowatt--110 volt machine, or a 10 kilowatt--99
ampere machine.
[Transcriber's note: 10 kilowatt at 110 volts is 91 amperes.]
Over-Compounding.
A proportioning of the series and shunt windings of a compound dynamo,
so that the voltage of the terminals rises with the load or output
enough to allow for the drop in mains, thus maintaining the potential
for full load at distant points in a district. It is carried out by an
increase of ampere-turns in the series winding.
Overload.
In an electric motor a mechanical load put upon it so great as to
prevent economical working. One effect of such a load is to make the
armature run so slowly as to unduly reduce the counter-electro-motive
force and hence to permit so much current to pass through the coils as
to heat them, perhaps injuriously. In this case the production of heat
implies the waste of energy.
Overtype Dynamo or Motor.
A dynamo or motor whose armature is placed above or in the upper part of
the field magnets, the yoke piece of the magnets being in or resting
upon the base of the machine.
Ozone.
An allotropic form of oxygen. It possesses much more energetic chemical
properties than oxygen. It is supposed to contain three atoms of oxygen
in its molecule, represented thus:
O
/ \
O---O
It is produced by electric discharges and it is its peculiar odor which
is noticed about an electric machine, and sometimes in a thunderstorm
near the path of a lightning flash.
In the electrolysis of water some ozone may be produced, thus
diminishing the volume of the oxygen or of the mixed gases given off.
This is a source of inaccuracy in a gas voltameter.