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Alternating Current and Voltage

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

1%
50%
25%
100%

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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

8 V
5.44 V
54.4 V
7.07 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
40 Hz
indeterminable
400 Hz

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Alternating Current and Voltage
One sine wave has a positive-going zero crossing at 15° and another sine wave has a positive-going zero crossing at 55°. The phase angle between the two waveforms is

40°
0°
45°
None of these

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Alternating Current and Voltage
A sinusoidal current has an rms value of 14 mA. The peak-to-peak value is

45.12 mA
22.6 mA
16 mA
39.6 mA

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Alternating Current and Voltage
A square wave has a period of 60 s. The first odd harmonic is

5 kHz
50 kHz
33.33 kHz
500 kHz

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