ALTERNATING CURRENT AND VOLTAGE QUIZ

A phasor represents

the magnitude of a quantity

the phase angle

the width of a quantity

the magnitude and a quantity direction

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A square wave has a period of 60 s. The first odd harmonic is

50 kHz

5 kHz

500 kHz

33.33 kHz

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A waveform has a baseline of 3 V, a duty cycle of 20%, and an amplitude of 8 V. The average voltage value is

4.6 V

4 V

1.6 V

11 V

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A sinusoidal current has an rms value of 14 mA. The peak-to-peak value is

39.6 mA

16 mA

45.12 mA

22.6 mA

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If a sine wave goes through 10 cycles in 20 s, the period is

20 s

100 s

2 s

4 s

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A sawtooth wave has a period of 10 ms. Its frequency is

100 Hz

1,000 Hz

10 Hz

50 Hz

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A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty cycle is

1%

100%

25%

50%

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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

400 Hz

100 Hz

40 Hz

indeterminable

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A sine wave with a period of 4 ms is changing at a faster rate than a sine wave with a period of

3,000 s

1.5 ms

2 ms

0.0045 s

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How many degrees are there in /3 rad?

60°

6°

27°

180°

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