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Semitractor trucks use four large 12-V batteries. The
Chapter 21, Problem 18(choose chapter or problem)
Problem 18CQ
Semitractor trucks use four large 12-V batteries. The starter system requires 24 V, while normal operation of the truck’s other electrical components utilizes 12 V. How could the four batteries be connected to produce 24 V? To produce 12 V? Why is 24 V better than 12 V for starting the truck’s engine (a very heavy load)?
Questions & Answers
QUESTION:
Problem 18CQ
Semitractor trucks use four large 12-V batteries. The starter system requires 24 V, while normal operation of the truck’s other electrical components utilizes 12 V. How could the four batteries be connected to produce 24 V? To produce 12 V? Why is 24 V better than 12 V for starting the truck’s engine (a very heavy load)?
ANSWER:
Solution 18CQ
If battery are connected in series, the equivalent emf is equals the sum of emf of all the batteries. Therefore, two batteries of 12V rating