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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
7.64 V
6.37 V
1.27 V
0 V
7.64 V
6.37 V
1.27 V
Answer
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Related Question
Alternating Current and Voltage
If the rms voltage drop across a 15 k resistor is 16 V, the peak current through the resistor is
10 mA
15 mA
1 mA
1.5 mA
10 mA
15 mA
1 mA
1.5 mA
Answer
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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 100%
is 1%
cannot be determined
is 30%
is 100%
is 1%
Answer
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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 lags wave B by 105°.
Wave A leads wave B by 15°.
Wave A lags wave B by 15°.
Wave A leads wave B by 105°.
Wave A lags wave B by 105°.
Wave A leads wave B by 15°.
Wave A lags wave B by 15°.
Wave A leads wave B by 105°.
Answer
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Alternating Current and Voltage
A phasor represents
the width of a quantity
the magnitude of a quantity
the magnitude and a quantity direction
the phase angle
the width of a quantity
the magnitude of a quantity
the magnitude and a quantity direction
the phase angle
Answer
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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
10.60 V
5.93 V
1.65 V
16.54 V
10.60 V
5.93 V
Answer
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