Question 430Electricity & Electronics - QMED
70% to passWhat should be done when correcting specific gravity readings of a lead-acid battery for existing temperature conditions?
Aadd 4 correction points for each 10°F the battery temperature is above 80°F
Bsubtract 4 correction points for each 10°F the battery temperature is above 80°F
Csubtract 10 correction points for each 4°F the battery temperature is above 80°F
Dadd 10 correction points for each 4°F the battery temperature is above 80°F
AI Explanation
The correct answer is A) add 4 correction points for each 10°F the battery temperature is above 80°F. This is because the specific gravity of a lead-acid battery is temperature dependent. As the battery temperature increases above the standard reference temperature of 80°F, the specific gravity readings will be lower than the actual specific gravity. To correct for this, you need to add 4 correction points for each 10°F the battery temperature is above 80°F. The other options are incorrect because B) and C) call for subtracting correction points, which is the opposite of what is required, and D) specifies adding 10 correction points per 4°F, which is not the standard correction factor.
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