ALTERNATING CURRENT AND VOLTAGE QUIZ

If the peak of a sine wave is 13 V, the peak-to-peak value is

26 V

13 V

6.5 V

None of these

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YOUR ANSWER : ?

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

1,600 rps

400 rps

200 rps

800 rps

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YOUR ANSWER : ?

Sine wave A has a positive-going zero crossing at 45°. Sine wave B has a positive-going zero crossing at 60°. Which of the following statements is true?

Wave A leads wave B by 15°.

Wave A leads wave B by 105°.

Wave A lags wave B by 105°.

Wave A lags wave B by 15°.

TRUE ANSWER : ?
YOUR ANSWER : ?

A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of

18 kHz

25 kHz

1.3 MHz

12 kHz

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

is 30%

cannot be determined

is 100%

is 1%

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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

26.6 V

2.66 V

4 V

18.8 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1.5 mA

15 mA

1 mA

10 mA

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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

0 V

1.27 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

0 V

6 V

35 V

30 V

TRUE ANSWER : ?
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When a sine wave has a frequency of 100 Hz in 12 s it goes through

12 cycles

120 cycles

1,200 cycles

1/100 cycle

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YOUR ANSWER : ?

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