# Electronics - Alternating Current vs Direct Current

### Exercise :: Alternating Current vs Direct Current - General Questions

36.

What is the waveform period of a square wave signal that horizontally covers 3 major divisions per cycle? (time/cm = 50 ms)

 A. 50 ms B. 100 ms C. 150 ms D. 200 ms

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

37.

A sine wave has:

 A. four quadrants B. two alternations C. one period D. all of the above

Answer: Option D

Explanation:

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38.

What is the peak-to peak voltage of a 56 Vrms ac voltage?

 A. 158 V B. 164 V C. 82 V D. 79 V

Answer: Option A

Explanation:

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39.

One oscilloscope selector knob that allows the major and minor divisions of the graticule to be used to determine a waveform period is called a:

 A. focus control B. time/cm control C. intensity control D. volts/cm control

Answer: Option B

Explanation:

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40.

What is the period of a 16 MHz sine wave?

 A. 196 ns B. 62.5 ns C. 31.25 ns D. 19.9 ns

Answer: Option B

Explanation:

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