Question 342Electricity & Electronics - Assistant Engineer

The correct answer is B) Electronic digital thermometer. For accuracy purposes, an electronic digital thermometer is the appropriate device to measure the temperature of a battery electrolyte. This is because electronic digital thermometers are designed to provide precise temperature readings without introducing any foreign materials into the electrolyte solution, unlike a mercury thermometer. The other options, such as a potentiometer or thermocouple pyrometer, are not suitable for directly measuring the temperature of a battery electrolyte.