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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 100%
is 1%
cannot be determined
is 30%

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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
7.64 V
0 V
1.27 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

40 Hz
400 Hz
indeterminable
100 Hz

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

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

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Alternating Current and Voltage
Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is

1.65 V
16.54 V
5.93 V
10.60 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

4 V
1.6 V
11 V
4.6 V

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