ALTERNATING CURRENT AND VOLTAGE QUIZ

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

1.6 V

4 V

4.6 V

11 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

22.6 mA

45.12 mA

16 mA

39.6 mA

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 : ?

How many degrees are there in /3 rad?

60°

27°

6°

180°

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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

100%

1%

50%

25%

TRUE ANSWER : ?
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The average value of a 12 V peak sine wave over one complete cycle is

7.64 V

6.37 V

1.27 V

0 V

TRUE ANSWER : ?
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A sawtooth wave has a period of 10 ms. Its frequency is

100 Hz

10 Hz

1,000 Hz

50 Hz

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

7.07 V

5.44 V

8 V

54.4 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

5 kHz

33.33 kHz

TRUE ANSWER : ?
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A phasor represents

the width of a quantity

the phase angle

the magnitude and a quantity direction

the magnitude of a quantity

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