Question

Which of the following is not a component of the control loop?

(a) Initial control element

(b) A measuring element

(c) Final control element

(d) Controller

This question was addressed to me in a national level competition.

My question comes from Instrumentation and Control in portion Instrumentation and Control of Fermentation Technology

Answer 1

Right answer is (a) Initial control element

The explanation: The components of the control loop include: a measuring element, a controller, a final control element, and the process to be controlled. It senses the properties such as flow, pressure, temperature, etc.