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Physical parameters change due to ________(a) voltage(b) current(c) internal and external disturbances(d) powerThe question was asked in a job interview.My doubt is from Process Control System topic in portion Transducers of Electrical Measurements

Answer»

Correct choice is (c) internal and external disturbances

To explain I would say: The physical parameters such as temperature, PRESSURE, flow rate, force, ETC in a process CONTROL system are affected due to both internal and external disturbances. As a result, constant corrective action is required to KEEP them at a constant VALUE.



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