Question

What is the correct count of negative plates with respect to positive plates in a battery?

(a) Both positive and negative have the same number of plates

(b) More positive plates when compared to negative plates

(c) More negative plates when compared to positive plates

(d) Have no relation between them

I have been asked this question in an interview.

The question is from Lead-Acid Battery in division Storage Batteries of Automotive Engine Design

Answer 1

Correct choice is (c) More negative plates when compared to positive plates

Explanation: One positive and one negative group of plates are slid over each other, with separators in between, to form a cell. Most batteries have one more negative plate than positive plates in each cell. The size of plates and their number per cell determine the capacity of the battery.