Electronic Principles
An ideal voltage source has

A load dependent voltage
None of these
Zero internal resistance
Infinite internal resistance
A load-dependent current

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Electronic Principles
A high-pass filter:

passes higher-frequency signals and reduces lower-frequency signals
increases the level of all frequencies by a significant amount
passes lower-frequency signals and reduces higher-frequency signals
None of these
has no effect on ac signals

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Electronic Principles
Which one of the following statements best describes magnetic hysteresis?

Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet
Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently
Hysteresis is most apparent when the core material is saturated
None of these
Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet

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Electronic Principles
The total inductive reactance of a parallel inductor circuit is:

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

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