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 TM 55-1905-223-24-5
GLOSSARY - CONT
SECTION II. Definitions
AIR GAP
-
The radial space between the rotating and the stationary elements of a
generator. The magnetic field passes through this space.
ALTERNATING CURRENT
-
Electrical current which repeatedly varies from zero to a positive
maximum value to zero to a negative maximum value and back to
zero at a periodic rate. Since the applied voltage continually reverses
polarity, the resultant current flow alternates in direction within the
circuit.
AMBIENT TEMPERATURE
-
The atmospheric temperature of the immediate surrounding area.
-
An instrument designed to measure electric current.
AMP
-
An abbreviation for the term Ampere.
AMPERE
-
The unit of measure of electrical current flow. One ampere of current
will flow when one volt of electrical potential is applied across one ohm
of resistance.
ANODS
-
Active metals such as zinc and magnesium which, when attached to
steel or other metal in a water environment, prevent the corrosion of
the metal. The anodes corrode and are sacrificed instead of the steel.
ANTIFREEZE
-
A solution which, when mixed with water, lowers the freezing point.
CAPACITOR
-
A device possessing the property of capacitance. A typical capacitor
consists of two conducting surfaces separated by an insulating
material. A capacitor stores electrical energy, blocks the flow of dc,
and permits the flow of ac to a degree largely dependent on the
capacitance and the frequency of the applied ac.
CIRCUIT
-
An electrical path through which an electric current may flow from a
voltage or complete circuit is one where current is flowing. An open
circuit is one where the path has been disrupted, such as an open
switch or circuit breaker, thus stopping current flow.
CIRCUIT BREAKER
-
A protective device for opening a circuit when current when current
flow exceeds a predetermined value.
Glossary 2
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