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Alternating Current and Voltage

Alternating Current and Voltage
A phasor represents

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

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Alternating Current and Voltage
When a sine wave has a frequency of 100 Hz in 12 s it goes through

1/100 cycle
120 cycles
12 cycles
1,200 cycles

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Alternating Current and Voltage
If the rms current through a 6.8 k resistor is 8 mA, the rms voltage drop across the resistor is

5.44 V
8 V
54.4 V
7.07 V

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Alternating Current and Voltage
To produce an 800 Hz sine wave, a four-pole generator must be operated at

200 rps
800 rps
1,600 rps
400 rps

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Alternating Current and Voltage
A sawtooth wave has a period of 10 ms. Its frequency is

1,000 Hz
100 Hz
10 Hz
50 Hz

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

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

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