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Alternating Current and Voltage

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

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

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Alternating Current and Voltage
Sine wave A has a positive-going zero crossing at 45°. Sine wave B has a positive-going zero crossing at 60°. Which of the following statements is true?

Wave A leads wave B by 105°.
Wave A lags wave B by 105°.
Wave A lags wave B by 15°.
Wave A leads wave B by 15°.

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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
6.37 V
25.48 V
14.14 V

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Alternating Current and Voltage
A waveform has a baseline of 3 V, a duty cycle of 20%, and an amplitude of 8 V. The average voltage value is

1.6 V
4 V
4.6 V
11 V

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

0 V
6.37 V
7.64 V
1.27 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

25%
100%
50%
1%

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