# Electronics - Alternating Current vs Direct Current

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

11.

Which percentages of full-amplitude rise time are used for a pulse wave?

 A. 0 to 50 percent B. 0 to 100 percent C. 5 to 95 percent D. 10 to 90 percent

Explanation:

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12.

What is the average value of a 12 V peak wave?

 A. 3.82 V B. 4.24 V C. 7.64 V D. 9.42 V

Explanation:

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13.

A test equipment item that has the ability to produce either square, triangular, or sawtooth waveforms is called:

 A. a function generator B. a radio frequency generator C. an audio frequency generator D. a frequency meter or counter

Explanation:

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14.

The current is flowing in what direction?

 A. clockwise B. counterclockwise C. in both directions at the same time D. 50% of the time clockwise and 50% of the time counterclockwise

Explanation:

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15.

What does the CRT oscilloscope display?

 A. voltage and period B. current and frequency C. rms voltage and current D. frequency and voltage