Question 302Motor Plants - Assistant Engineer

The correct answer is B) The probe and sensor measure the dielectric constant through capacitive reactance of the process fluid. The water transducer in the separator system uses a capacitance-based measurement principle to detect the water content in the oil. As the water content in the oil changes, the dielectric constant of the fluid also changes. The probe and sensor in the transducer measure this change in dielectric constant through capacitive reactance, which allows the system to determine the water content. This is the working principle of the water transducer. The other options are incorrect because they do not accurately describe the working principle of the capacitive water transducer. Option A is incorrect as it describes an inductive circuit, while option C is incorrect as it states the relationship between water content and dielectric constant is opposite to the actual behavior.