객관식
The following phasor diagram shows an arbitrary phasor during its first rotation. Assuming that it begins with an angle of 0°, if the phasor took 0.027 s to get to its current position, what is the angular frequency of the phasor?
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31. Alternating Current
Phasors
객관식
An AC source oscillates with an angular frequency of 120 s-1 . If the initial voltage phasor is shown in the following phasor diagram, draw the voltage phasor after 0.01 s. (Select the correct absolute angle below of the phasor's location below after you have drawn it.)
A
8.3×10−5 radians
B
1.2 radians
C
2π radians
D
15 radians
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