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Alternating Current and Voltage

Alternating Current and Voltage
A phasor represents

the width of a quantity
the magnitude and a quantity direction
the magnitude of a quantity
the phase angle

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Alternating Current and Voltage
The conductive loop on the rotor of a simple two-pole, single-phase generator rotates at a rate of 400 rps. The frequency of the induced output voltage is

400 Hz
100 Hz
40 Hz
indeterminable

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Alternating Current and Voltage
If a sine wave goes through 10 cycles in 20 s, the period is

100 s
2 s
4 s
20 s

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Alternating Current and Voltage
Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is

5.93 V
10.60 V
16.54 V
1.65 V

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Alternating Current and Voltage
A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty cycle is

50%
1%
25%
100%

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Alternating Current and Voltage
A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of

12 kHz
1.3 MHz
25 kHz
18 kHz

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