ALTERNATING CURRENT AND VOLTAGE QUIZ

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

1.5 mA

10 mA

1 mA

15 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

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

10 Hz

50 Hz

1,000 Hz

100 Hz

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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

18.8 V

26.6 V

2.66 V

4 V

TRUE ANSWER : ?
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A square wave has a period of 60 s. The first odd harmonic is

50 kHz

500 kHz

33.33 kHz

5 kHz

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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

5.93 V

10.60 V

1.65 V

16.54 V

TRUE ANSWER : ?
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If the peak of a sine wave is 13 V, the peak-to-peak value is

6.5 V

None of these

26 V

13 V

TRUE ANSWER : ?
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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

50%

100%

25%

1%

TRUE ANSWER : ?
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The average half-cycle value of a sine wave with a 40 V peak is

14.14 V

50.96 V

25.48 V

6.37 V

TRUE ANSWER : ?
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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

6 V

35 V

30 V

0 V

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One sine wave has a positive-going zero crossing at 15° and another sine wave has a positive-going zero crossing at 55°. The phase angle between the two waveforms is

0°

None of these

40°

45°

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