Explain any simple temperature control system.

3 Answers   HGJ, L&T,

---

key exchanges in wpa,wpa2,tls

0 Answers  

---

Why the Air Tank Accumulators required for the single acting actuators SDV's or BDV's as I see in some Schematic diagrams of ROTORK ??

2 Answers   L&T, Siemens,

---

Which topics are covered in Process Control?

0 Answers   Honeywell, L&T,

---

wht is mean by dpt(differential pressure transmitter)

1 Answers  

---

What is zero elevation and zero suppression?

0 Answers   CCIE,

---

what is the Instrumentation?

9 Answers   Gulf,

---

7. What are tri-state devices and why they are essential in a bus oriented system

1 Answers  

---

A temperature sensor (RTD) connected via a temperature transmitter is adjusted to give an output of 4ma at 60 deg and 20 ma at 600 deg. This output (4-20ma) from the transmitter is connected to an IGBT-inverter to control a high speed (-12,000 to +12,000 RPM) DC motor. And in the inverter it is programmed as, for 4ma the motor speed will be -3,000 RPM and for 20ma the motor speed will be +10,000 RPM. The question is : If the motor speed is +5,500 (RPM), what will be the temperature? (-sign indicates that the motion is in reverse direction).

9 Answers  

---

who discoverd ohms law?

6 Answers   HPCL, Patni,

---

Explain the usage of the PLC system?

3 Answers  

---

where can we use viberation transmitter,and how can we control viberation?

1 Answers   Maden,

---