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Page Title:
Basic alternating current (AC) theory. |
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|  DOE-STD-1170-2003
5.
Electrical systems personnel shall demonstrate a working level knowledge of
basic alternating current (AC) theory.
Supporting Knowledge and/or Skills
a.
Define the effective value of an alternating current relative to direct current (DC).
b.
Describe the relationship between maximum, average, and root-mean-square
(RMS) values of voltage and current in an alternating current waveform.
c.
Using a diagram of two sine waves, describe the phase relationship between the
two waves.
6.
Electrical systems personnel shall demonstrate a working level knowledge of the
construction and operation of alternating current (AC) generators.
Supporting Knowledge and/or Skills
a.
Describe the basic construction and operation of a simple alternating current
generator.
b.
Describe the development of a sine-wave output in an alternating current
generator.
c.
Define the following terms in relation to alternating current generation:
Radians/second
Hertz
Period
d.
Using the type and application of an alternating current generator, describe the
operating characteristics of that generator including methods of voltage
production, advantages of each type, and methods for paralleling.
e.
State the purpose of the following components of an alternating current generator:
Field
Armature
Prime mover
Rotor
Stator
Slip rings
f.
Using the speed of rotation and number of poles, calculate the frequency output of
an alternating current generator.
g.
List the three losses found in an alternating current generator.
h.
Given the prime mover input and generator output, determine the efficiency of an
alternating current generator.
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