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

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

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Electronic Principles
The period of a waveform is:

equal to 0.707 times the peak amplitude
the time required to complete one full cycle
the time required for the voltage to rise from 10% to 90% of the peak amplitude
None of these
the number of cycles completed in one second

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