Electronic Principles
Thevenin theorem replaces a complicated circuit facing a load by an

None of these
Ideal current source and series resistor
Ideal voltage source and series resistor
Ideal current source and parallel resistor
Ideal voltage source and parallel resistor

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Electronic Principles
Which one of the following phrasers best describes flux density?

The opposition to a build-up of magnetic fields
The force that maintains lines of force
The concentration of lines of magnetic force
The rate of change of the number of lines of magnetic force
None of these

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Electronic Principles
Which one of the following statements most accurately applies to the frequency of a waveform?

The higher the amplitude of a waveform, the higher its frequency
The actual frequency of a sine waveform is 1.41 times the working frequency
None of these
The longer the period of a waveform, the lower its frequency
Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz

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

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

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