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

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

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Electronic Principles
When a parallel RLC circuit is operating at its resonant frequency:

None of these
inductive reactance is equal to the capacitive reactance
inductive reactance is greater than the capacitive reactance
capacitive reactance is greater than the inductive reactance
the difference between inductive and capacitive reactance is equal to the resistance

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