ALTERNATING CURRENT AND VOLTAGE QUIZ

A square wave has a period of 60 s. The first odd harmonic is

50 kHz

33.33 kHz

5 kHz

500 kHz

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

200 rps

800 rps

400 rps

1,600 rps

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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

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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

13 V

26 V

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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

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How many degrees are there in /3 rad?

27°

6°

180°

60°

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A 20 kHz pulse waveform consists of pulses that are 15 s wide. The duty cycle

is 1%

is 100%

is 30%

cannot be determined

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

5.93 V

10.60 V

1.65 V

16.54 V

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If a sine wave goes through 10 cycles in 20 s, the period is

100 s

4 s

2 s

20 s

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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

11 V

1.6 V

4.6 V

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