Answer / aadi

ElectromotiveForce,Voltage, and Potential
Difference...virtually are the same, except that...
EMF is more of an Electrical term,in terms of the force req.
to move a charge from a point to another, ...
Voltage is the Electric Potential of a point w.r.t ground...
...and Potential Difference is the difference in the
Electric potentials of two relative points...(since its
relative, it always has a + or a -!!)

I saw one P&ID 6" control valve has been connected with 8" process line, and 2" valve also connected in parallel with 6" valve. why the 2" valve connected in parallel, Is there any technical reason. please clarify. With Regards-Kittu

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