ALTERNATING CURRENT AND VOLTAGE QUIZ

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

30 V

35 V

6 V

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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 V

4.6 V

1.6 V

11 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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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A signal with a 400 s period has a frequency of

2,500 Hz

25,000 Hz

400 Hz

250 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

25%

50%

100%

1%

TRUE ANSWER : ?
YOUR ANSWER : ?

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

10.60 V

5.93 V

16.54 V

TRUE ANSWER : ?
YOUR ANSWER : ?

A phasor represents

the magnitude of a quantity

the magnitude and a quantity direction

the width of a quantity

the phase angle

TRUE ANSWER : ?
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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

2 ms

0.0045 s

1.5 ms

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

200 rps

1,600 rps

400 rps

800 rps

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The average half-cycle value of a sine wave with a 40 V peak is

14.14 V

6.37 V

25.48 V

50.96 V

TRUE ANSWER : ?
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