Process Control and Instrumentation
Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change?

Methyl alcohal
Water
Carbon-tetrachloride
Mercury

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Process Control and Instrumentation
A magnetic flowmeter is

Based on the principle of Faraday's law
Capable of measuring the flow rate of slurries and electrolytes
Based on the linear relationship between the fluid flow rate and the induced voltage
All of these

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