MCA Second Engineer Marine Electro-Technology Practice Questions - MCA Second Engineer - Marine Electro-Technology (SQA Written Examination) Exam

How is the state of charge of a lead–acid cell commonly assessed using a hydrometer?

By measuring the relative density (specific gravity) of the electrolyte By measuring only the open-circuit terminal voltage at −20 °C By measuring plate colour with a magnetometer By measuring electrolyte pH alone with litmus

Correct Answer:

By measuring the relative density (specific gravity) of the electrolyte

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