what is buoyancy law?

1 Answers  

---

What is Droop? What is Step/Gradient Limiter in Turbine Governor control?

0 Answers  

---

meaning of SMART

3 Answers   ISRO,

---

What are three main programming in PLC

5 Answers  

---

What are the logic behind 2x2 and 2x3 logic and more when ask in interviews

1 Answers   Reliance,

---

1. What means HART communicator / where it is used / how to use it? 2. Types of Thermocouples and its temperature ranges / output of thermocouple? 3. Types of RTDs and its temperature ranges / output of RTD? 4. Idea about Temperature Transmitters? 5. Difference between Analog and Digital signals? 6. Difference between “2 wire” and “4 wire” system / instruments? 7. Difference between “Potential” and “Potential free” contact? 8. Types of flow meters / transmitters? 9. Types of level transmitters? 10. Difference between “Power/Control” cable and “Instrument” cable? 11. What means “shield” and “screen” in cables / how it is useful? 12. Draw a schematic of closed loop circuit of flow / level / pressure / temperature? 13. Idea about calibration of Control valve / positioned / I/P? 14. How to bypass a digital/analog signal in PLC/DCS by hardwire and software?

6 Answers   JSL,

---

how to calculate temp.prapotional to mv in thermocoulpe.

2 Answers   Electronics, KNPC,

---

which type inter lock use in petrochemical refinery,and oil & gas?

0 Answers  

---

Pls.could any one Clarify the following with an example. 1.At What condition Close on Rise and Close on Fall Pressure Switch contacts are used. 2.If Pressure is abnormal as per set pressure,if connecting Terminal of pressure switch breaks,how the voltage extends to Relay base. 3.Are these contacts come under fail safe philasaphy.

1 Answers  

---

How to calibrate radar type level transmitter for interface level? Total liquid(liq.1 and liq.2), level both the liq individually? For. Both the liquid levels how the signal will go from transmitter to dcs? How to calibrate. Single radar 9:26:55 AM for 2 different liquids in a tank?

0 Answers   Almeer Technical Services,

---

Exapain Deatails of the PID controlller

4 Answers  

---

how to check control valve was passing?how to check online?

3 Answers  

---