ALTERNATING CURRENT AND VOLTAGE QUIZ

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

45.12 mA

16 mA

39.6 mA

22.6 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

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

25%

1%

50%

100%

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

50 Hz

100 Hz

1,000 Hz

10 Hz

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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

3,000 s

1.5 ms

2 ms

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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

10.60 V

1.65 V

5.93 V

16.54 V

TRUE ANSWER : ?
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If a sine wave goes through 10 cycles in 20 s, the period is

4 s

20 s

2 s

100 s

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

7.64 V

0 V

1.27 V

6.37 V

TRUE ANSWER : ?
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A phasor represents

the magnitude and a quantity direction

the phase angle

the magnitude of a quantity

the width of a quantity

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

50.96 V

6.37 V

14.14 V

25.48 V

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

8 V

5.44 V

54.4 V

TRUE ANSWER : ?
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