The best indication about the state of charge on a lead-acid battery is given by____________?
Correct answer: C. specific gravity of electrolyte
- A. output voltage
- B. temperature of electrolyte
- C. specific gravity of electrolyte
- D. none of the above
Explanation
Specific gravity changes predictably with the concentration of sulphuric acid, so it gives a more reliable indication of state of charge than terminal voltage, which varies with load and charging condition.
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