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Alternating Current and Voltage

Alternating Current and Voltage
A sine wave with an rms value of 12 V is riding on a dc level of 18 V. The maximum value of the resulting waveform is

0 V
35 V
30 V
6 V

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Alternating Current and Voltage
A phasor represents

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

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Alternating Current and Voltage
A square wave has a period of 60 s. The first odd harmonic is

500 kHz
50 kHz
5 kHz
33.33 kHz

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Alternating Current and Voltage
If the peak of a sine wave is 13 V, the peak-to-peak value is

13 V
6.5 V
None of these
26 V

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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 15°.
Wave A lags wave B by 105°.
Wave A leads wave B by 15°.
Wave A leads wave B by 105°.

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

27°
180°
6°
60°

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