ALTERNATING CURRENT AND VOLTAGE QUIZ

How many degrees are there in /3 rad?

6°

27°

60°

180°

TRUE ANSWER : ?
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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

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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

1.5 ms

3,000 s

0.0045 s

2 ms

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If the peak of a sine wave is 13 V, the peak-to-peak value is

26 V

13 V

None of these

6.5 V

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

1,600 rps

200 rps

800 rps

400 rps

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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 leads wave B by 15°.

Wave A lags wave B by 105°.

Wave A leads wave B by 105°.

Wave A lags wave B by 15°.

TRUE ANSWER : ?
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If the rms voltage drop across a 15 k resistor is 16 V, the peak current through the resistor is

10 mA

1.5 mA

15 mA

1 mA

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

1,000 Hz

10 Hz

100 Hz

50 Hz

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A 20 kHz pulse waveform consists of pulses that are 15 s wide. The duty cycle

is 100%

cannot be determined

is 30%

is 1%

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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

11 V

4 V

4.6 V

1.6 V

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