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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

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

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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

50%
100%
1%
25%

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

7.64 V
0 V
6.37 V
1.27 V

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

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

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Alternating Current and Voltage
A phasor represents

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

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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
2.66 V
4 V
18.8 V

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