Question 92General Subjects - 1st Asst/Chief70% to pass
Which of the following statements represents the basic principle of operation of an electrical salinity indicator?
AI Explanation
The correct answer is C) Measures the electrical resistance of the water.
An electrical salinity indicator measures the conductivity or electrical resistance of the water, which is directly related to the salinity or salt content of the water. The more dissolved salts in the water, the higher the conductivity and lower the electrical resistance. By measuring this resistance, the salinity of the water can be determined.
The other options are incorrect because:
A) Measures the hydrogen ion concentration (pH), not salinity.
B) Does not measure voltage of chloride ions.
D) Measures dissolved oxygen, not salinity.
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