Electronic Principles
Which one of the following properties of a magnetic circuit can be directly compared to resistance in an electrical circuit?

There is no valid comparison
Permeability
Reluctance
Retentivity
Permeance

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Electronic Principles
A circuit has a Norton current of 10 mA and a Norton resistance of 10 kW. What is the Thevenin circuit?

None of these
100 V and a series resistance of 10 k Ohm
1000 V and a parallel resistance of 10 kOhm
1000 V and a series resistance of 10 k Ohm
100 V and a parallel resistance of 10 k Ohm

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Electronic Principles
Waveforms are graphs that show:

the passage of time on the vertical axis and amplitude on the horizontal axis
frequency on the vertical axis and amplitude on the horizontal axis
amplitude on the vertical axis and the passage of time on the horizontal axis
amplitude on the vertical axis and frequency on the horizontal axis
None of these

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Electronic Principles
The rms value of a sine waveform is:

equal to 0.707 times the peak amplitude
None of these
the number of cycles completed in one second
the time required to complete one full cycle
equal to 1.41 times the peak amplitude

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Electronic Principles
What is a negative ion?

None of these
An atom that contains more protons than neutrons
An atom that contains more electrons than neutrons
An atom that contains more protons than electrons
An atom that contains more electrons than protons

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