Velocity of liquid hydrocarbon fuels in a pipeline cannot be measured by magnetic flowmeters, because their ______________ is very low/small?
Correct answer: A. Electrical conductivity
- A. Electrical conductivity
- B. Thermal conductivity
- C. Specific gravity
- D. Electrical resistivity
Explanation
Magnetic flowmeters require the flowing liquid to conduct electricity so the induced voltage can be detected. Liquid hydrocarbons are poor electrical conductors, so their low electrical conductivity prevents reliable measurement.
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