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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%
25%
50%
100%

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

6.37 V
1.27 V
7.64 V
0 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

400 Hz
40 Hz
100 Hz
indeterminable

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Alternating Current and Voltage
A 20 kHz pulse waveform consists of pulses that are 15 s wide. The duty cycle

is 1%
cannot be determined
is 100%
is 30%

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Alternating Current and Voltage
The average half-cycle value of a sine wave with a 40 V peak is

50.96 V
14.14 V
25.48 V
6.37 V

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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

0°
40°
45°
None of these

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