L4 Flashcards
1
Q
A sinusoidal voltage produces a
A
sinusoidal current
2
Q
Kirchhoff’s voltage law applies to
A
AC circuits just like DC circuits
3
Q
Power in AC circuits is calculated using
A
RMS values for voltage and current.
4
Q
DC and AC voltages can be combined in a waveform.Algebraically they produce
A
a composite waveform of an AC voltage “riding” on a DC level.
5
Q
If dc voltage > ac voltage, the sine wave
A
never goes negative.
6
Q
Oscilloscope
A
A device that traces the graph of a measured electrical signal on its screen.
7
Q
Sine wave
A
A type of waveform that follows a cyclic sinusoidal pattern defined by the formula y = A sin O.
8
Q
Alternating current
A
Current that reverses direction in response to a change in source voltage polarity.
