Velocity of liquid hydrocarbon fuels in a pipeline can not be measured by magnetic flowmeters, because their __________ is very low/small.

A Thermal conductivity
B Electrical conductivity
C Specific gravity
D Electrical resistivity

Correct Answer: Electrical conductivity

In this question, the inability to measure the velocity of liquid hydrocarbon fuels in a pipeline using magnetic flowmeters is due to their electrical conductivity being very low or small. Magnetic flowmeters operate based on Faraday's law of electromagnetic induction, which requires the fluid to be electrically conductive to generate a measurable signal. Since liquid hydrocarbon fuels typically have low electrical conductivity, magnetic flowmeters are not suitable for measuring their velocity.

Hence, Option B: Electrical conductivity is the correct choice.
Bissoy MCQ
#Chemical Engineering #Fluid Mechanics

Related Questions

Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their
A Low thermal conductivity
B Low electrical conductivity
C High viscosity index
D Low flash point
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A Weir
B Hot wire anemometer
C Cup and vane aneometer
D None of these
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A Cracking
B Fractional distillation
C Full distillation
D Carbonisation
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B Retards electric precipitation
C Promotes complete combustion
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A Bomb
B Boy's
C Junkar's
D None of these
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A SASOL (in South Africa)
B Redcar (U.K.)
C Los-Angles (U.S.A.)
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A Directly proportional to
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C Inversely proportional to
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B Is constant
C Decreases in the downstream direction
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B Pitot tube
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