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Alternating Current and Voltage

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

16.54 V
5.93 V
1.65 V
10.60 V

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Alternating Current and Voltage
How many degrees are there in /3 rad?

27°
6°
60°
180°

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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
1.27 V
6.37 V

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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
16 mA
39.6 mA
22.6 mA

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Alternating Current and Voltage
A signal with a 400 s period has a frequency of

2,500 Hz
400 Hz
250 Hz
25,000 Hz

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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 30%
cannot be determined
is 1%
is 100%

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