Electronic Principles
Which one of the following statements is true?

None of these
All of these
Power dissipation of a pure capacitor decreases with operating frequency
Power dissipation of a pure capacitor increases with operating frequency
There is no meaningful relationship between the power dissipation of a pure capacitor and its operating frequency

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Electronic Principles
Doubling the operating frequency of a purely inductive circuit:

increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit
cuts the current through the inductors one-half
doubles the amount of current through the inductors
None of these
has no effect on the current through the inductors

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

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

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Electronic Principles
Which one of the following phrases best describes residual magnetism?

The force of attraction between the poles of a permanent and temporary magnetic field
The amount of magnetic flux that is not confined to the core material of an electromagnet
Magnetism that remains in the core of an electromagnet after the current through the coil is turned off
The circular magnetic field that surrounds a conductor carrying a current
None of these

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