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 TM 55-1905-223-24-3
GLOSSARY - CONT
DEFINITIONS - CONT
RHEOSTAT
A variable resistor.
ROTOR
The rotating part of a generator.
SCALE
Insoluble materials that settle out of cooling water and adhere
to the metallic surfaces; buildup of hard materials which
interfere with the transfer of heat.
An electromechanical device which, when energized, acts on a
movable core or plunger in the center of the energizing coil to
perform mechanical work.
STABILITY
A condition which describes engines governor and generator
voltage regulator. These systems provide frequency and
voltage stability if they can maintain or quickly re-establish
steady-state regulation after a load change.
STATOR
The stationary part of a generator or exciter.
SURGE SUPPRESSOR
A device capable of conducting current in either direction in
the presence of high transient voltages, thus protecting
devices that could otherwise be damaged.
VARISTOR
A surge suppresser.
VOLTAGE REGULATOR
A device which controls the voltage output of a generator at a
preset value regardless of the amount of load applied (see
Firing Circuit).
An instrument designed to measure electrical potential or
voltage.
Glossary 6
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