ALTERNATING CURRENT AND VOLTAGE QUIZ

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

1%

25%

50%

100%

TRUE ANSWER : ?
YOUR ANSWER : ?

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

35 V

6 V

0 V

30 V

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

10.60 V

5.93 V

16.54 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

400 rps

800 rps

1,600 rps

200 rps

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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

0.0045 s

1.5 ms

2 ms

3,000 s

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

14.14 V

6.37 V

50.96 V

25.48 V

TRUE ANSWER : ?
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If the rms current through a 4.7 k resistor is 4 mA, the peak voltage drop across the resistor is

2.66 V

18.8 V

4 V

26.6 V

TRUE ANSWER : ?
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A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of

12 kHz

25 kHz

1.3 MHz

18 kHz

TRUE ANSWER : ?
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If the rms current through a 6.8 k resistor is 8 mA, the rms voltage drop across the resistor is

54.4 V

5.44 V

7.07 V

8 V

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YOUR ANSWER : ?

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