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Alternating Current and Voltage

Alternating Current and Voltage
To produce an 800 Hz sine wave, a four-pole generator must be operated at

800 rps
400 rps
200 rps
1,600 rps

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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

5.93 V
16.54 V
1.65 V
10.60 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
22.6 mA
39.6 mA
16 mA

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Alternating Current and Voltage
A phasor represents

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

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Alternating Current and Voltage
One sine wave has a positive-going zero crossing at 15° and another sine wave has a positive-going zero crossing at 55°. The phase angle between the two waveforms is

None of these
40°
45°
0°

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Alternating Current and Voltage
A sine wave with a period of 4 ms is changing at a faster rate than a sine wave with a period of

0.0045 s
1.5 ms
2 ms
3,000 s

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