During the design and engineering of a process plant, a good designer should plan for ____________, ___________ and ____________ aspects of the plant

1 Answers  

---

Can you explain drawbacks between P,I,D & PID controller

1 Answers   JSW, Priya Cement, TPL,

---

Why we use 4 to 20 mA, (This is International Standard) instaed of this can we use 4-16, or 4-24 or 3- 15 or any other range

13 Answers   ONGC,

---

For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?

0 Answers  

---

what is dry leg and what is wet leg?

3 Answers  

---

---

what is differnace between radar level tranmitter & hart type tranmitter?

3 Answers  

---

what is the input to be given digital temp controller during the the calibration time?

2 Answers  

---

why the derivative in PID is always set to zero?

3 Answers  

---

what is meant by orderm of a system. will the stability of a system increases by incresing order of a system

1 Answers  

---

Sir i am preparing for PSU exam for ONGC but i am not able to get the appropriate syllabus and previous year question papers. Kindly send me the same, that will be a great help from ur side. OR if anyone can plz send me the papers and syllabus please.

11 Answers   Bhel, GAIL, IOCL, ISRO, NTPC, ONGC,

---

Why are the uses 24vdc in industries

0 Answers  

---

how u measure dp in dp tx? how u calibrate a dp tx?

3 Answers   Invensys,

---