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Alternating Current and Voltage

Alternating Current and Voltage
The average value of a 12 V peak sine wave over one complete cycle is

0 V
7.64 V
6.37 V
1.27 V

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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

100 Hz
400 Hz
40 Hz
indeterminable

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Alternating Current and Voltage
A phasor represents

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

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Alternating Current and Voltage
If the rms current through a 4.7 k resistor is 4 mA, the peak voltage drop across the resistor is

26.6 V
18.8 V
4 V
2.66 V

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Alternating Current and Voltage
A signal with a 400 s period has a frequency of

2,500 Hz
250 Hz
25,000 Hz
400 Hz

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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

16.54 V
1.65 V
10.60 V
5.93 V

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