what is surge and how is it prevented, what is the purpose
of bypass valve across AS valve.
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What is instrumentation control?
why are use only 4 to 20ma. signal.
Explain types of valves?
what is the basic working principle of I/P and Positioner in any control valve.
what are the diff. in servo and regulatory control?
HOW WE ARE DECIDING WHILE PROGRAMMING IN PID CONTROLLER THAT WE ARE USING HEATING OR COOLING???????
In closed loop control there are several “blocks” used to show the interactions between the process and the control system. These blocks are referred to as the “process” and the “controller.” Describe the relationship between these two blocks when creating a well tuned control loop.
What are the types of valves?
why any measurement made interms of pressure is more accurate ? to be more precise most of the flow velocity is made interms of pressure and it is accurate. what is the reason behind pressure measurement being accurate ?
pls send me the 10 years technical question papers of NTPC AND BHEL
15 Answers Bhel, NTPC, ONGC, UCE,
Pressure transmitter working Principles?
Can anyone send most commonley asked Instrumentation questions and answers in cement industry please?
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