Answer / rajkumar

current tr, (voltage tr---1 phase, 3 phase---LT, HT)and power tr
current tr--- used mainly to measure current flowing in a
conductor(current flowing conductor is primary and you will
get mA in secondary coil which you can use for measurement)
voltage Tr----to boost or reduce voltage ..ie if you apply
low voltage in primary winding you can get high voltage at
secondary winding and vice versa according to winding
designs. core and shell are designed to minimise tranform
losses.
power Tr---tranforms both current and voltage ..winding with
electronics to boost or reduce power

draw the block diagram of a level transmitter ?

0 Answers   Hira Group, Samsung,

---

why OPC server is used in DCS?

2 Answers  

---

for commissioning the DPT and Flow Transmitter , what kind of necessary activities we have to check and do? specially that orifice flange valve[ isolation valve}

1 Answers   L&T,

---

What is paid how it works

0 Answers   KOC,

---

i want formula for flow control.am doing project in flow control using orifice . i know value of the flow level(Q) . upstream(p1) pressure, orifice diameter(Do) , pipe diameter(Di) and oil viscosity(Vi) how can i calculate downstream pressure

0 Answers  

---

if differential pressure created by orifice falls below vapour pressure of liquid flowing through it what will happen

1 Answers   BARC,

---

why we use 0.2 to 1.0 kg/cm2 output in control valve

4 Answers   GNFC,

---

give classification of transducer based on type of application

2 Answers  

---

suppose in dcs range of a flow transmitter is 10t/hr what is dp for 50% in 2500mmwc

6 Answers   Chevron,

---

wt kind of business we can do by usig PLC?

2 Answers   Dabur,

---

temptrure me ketne frequiency hote hai

0 Answers   ME,

---

What is cascade control in process instrumentation?

4 Answers   Engineers India, ITC Infotech,

---