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

None of these
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

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

The voltage reverses polarity periodically
The voltage remains at one polarity and at a steady level
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

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Electronic Principles
Molecule is

None of these
A atom that has a shortage of electrons in its outer orbit
A atom that has an excessive number of electrons in its outer orbit
A atom that flows whenever there is an imbalance of electrical charges between two points
The smallest particle of a substance that retains the properties of that substance

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