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

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

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Electronic Principles
The total inductance of a series inductor circuit is:

equal to the sum of the individual inductive-reactance values
equal to the source voltage divided by total current
less than the value of the smallest inductor
None of these
equal to the sum of the individual inductance values

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