Electrical (A6)第 65 / 120 题
A fully charged 12-volt lead-acid battery at rest should read approximately:
a.10.5 volts
b.11.8 volts
c.13.8 volts
d.12.6 volts
解析
A healthy, fully charged 12-volt battery reads about 12.6 volts open-circuit at rest. Around 12.4 is roughly 75 percent, and 12.0 is about 25 percent charged. A surface charge should be removed before testing for accuracy.
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