Fig. 124. MAGNETIZATION CURVE.
Fig. 125. ARMATURE: CURVE.
Fig. 126. DEVELOPMENT OF ARMATURE CURVE.
Curve of Dynamo.
The characteristic curve of a dynamo. (See Curve, Characteristic.)
Curve of Sines.
An undulating curve representing wave motion. It is produced by
compounding a simple harmonic motion, or a two and fro motion like that
of an infinitely long pendulum with a rectilinear motion. Along a
horizontal line points may be laid off to represent equal periods of
time. Then on each point a perpendicular must be erected. The length of
each must be equal to the length of path traversed by the point up to
the expiration of each one of the given intervals of time. The abscissas
are proportional to the times and the ordinates to the sines of angles
proportional to the times. Thus if a circle be drawn upon the line and
divided into thirty-two parts of equal angular value, the sines of these
angles may be taken as the ordinates and the absolute distance or length
of arc of the angle will give the abscissas.
Synonyms--Sine Curve--Sinusoidal Curve--Harmonic Curve.
Fig. 127. CURVE OF SINES.