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

Answer: Option D

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

Answer: Option C

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

Answer: Option A

Explanation:

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14. 

The current is flowing in what direction?

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

Answer: Option D

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

Answer: Option A

Explanation:

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