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

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

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Electronic Principles
The peak value of a sine waveform is:

the amplitude at 70.7% of the maximum value
the maximum positive or negative value
the amplitude at 90% of the maximum value
None of these
the amplitude at 1.41 times the maximum value

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