Electronics - Alternating Current vs Direct Current

Exercise :: Alternating Current vs Direct Current - True or False

1. 

DC current flows in one direction, while ac current rises from zero to a maximum, then falls to zero in one direction, then rises to a maximum, then falls to zero in the opposite direction.

A. True
B. False

Answer: Option A

Explanation:

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2. 

A square and a rectangular waveform appear to have a step voltage transition.

A. True
B. False

Answer: Option A

Explanation:

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3. 

The duty cycle of a square wave with a pulse width of 3 mu.gifs and a period of 9 mu.gifs is 40%.

A. True
B. False

Answer: Option B

Explanation:

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4. 

The rms value of a sine wave is .707 x peak-to-peak value/2.

A. True
B. False

Answer: Option A

Explanation:

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5. 

DC current transfers better over longer distances than ac current.

A. True
B. False

Answer: Option B

Explanation:

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