Two technicians are discussing Volt/Amp testers (VAT). Technician A says the VAT contains a carbon pile that is a variable resistor. Technician B says the VAT is used to check batteries, starting systems, and charging systems. Who is correct?

Question

Quizplus · Accepted Answer

Both Technician A and Technician B are correct. A Volt/Amp tester (VAT) does indeed contain a carbon pile which acts as a variable resistor, allowing it to adjust the load applied during testing. This feature is crucial for accurately assessing the performance of batteries, starting systems, and charging systems under different load conditions.

Two Technicians Are Discussing Volt/Amp Testers (VAT)