Electronic Principles
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?

The voltage remains at one polarity and at a steady level
The voltage reverses polarity periodically
The voltage remains at one polarity but changes value periodically
None of these
The voltage causes current to flow in two directions at the same time

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Electronic Principles
The total capacitance of a series capacitor circuit is:

less than the value of the smallest capacitor
equal to the sun of the individual capacitive-reactance values
equal to the source voltage divided by total current
equal to the sum of the individual capacitance values
None of these

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