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.
Answer: Option A
Explanation:
2.
A square and a rectangular waveform appear to have a step voltage transition.
Answer: Option A
Explanation:
3.
The duty cycle of a square wave with a pulse width of 3 s and a period of 9 s is 40%.
Answer: Option B
Explanation:
4.
The rms value of a sine wave is .707 x peak-to-peak value/2.
Answer: Option A
Explanation:
5.
DC current transfers better over longer distances than ac current.
Answer: Option B
Explanation: