Electronic Principles
Waveforms are graphs that show:

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

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Electronic Principles
Which one of the following statements applies to common auto batteries?

Auto batteries are primary wet-cell batteries
Auto batteries are secondary wet-cell batteries
None of these
Auto batteries are primary dry-cell batteries
Auto batteries are secondary dry-cell batteries

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

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

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Electronic Principles
Voltage is

The smallest electrically charged particle
The flow of charged particles through a material
Trie force that causes electrons to flow
The number of free electrons in an atom
None of these

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