DEFINITIONS - TM-55-1905-223-24-40309

TM 55-1905-223-24-4

GLOSSARY - CONT

DEFINITIONS

AMBIENT TEMPERATURE

The atmospheric temperature of the immediate surrounding area.

ANODES

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.

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.

AIR GAP

The radial space between the rotating and the stationary elements of a

generator. The magnetic field passes through this space.

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

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 supply to a load and return. A closed or complete circuit is one

where current is flowing. An open circuit is one

Glossary 2