Answer / madanraj

Snubber ckt is used to protect the scr from over current and over voltage.

Answer / arpita

snubber circuit is someting like a "bumper." It alleviates the rise of voltage when the switch of scr/transistor is turning OFF, and alleviates rise of current when the switch of scr/transistor is turning ON, to a safe level.

is here anybody who knows how to calibrate the pressure transmitter? ONLINE

5 Answers  

---

PLEASE PROVIDE SAMPLES OF CHEVRON SKILL TESTS

0 Answers  

---

What is voltage free(wet) and potential (dry) contact?

2 Answers  

---

I have transmitter of range -20 to -5 kpa.if it is possible to zero trim with atmospheric pressure,means HP and lp having no pressure...what will get after zero trim and it is the right way.....plz give me reply ....

3 Answers   KOC,

---

Vibration probe working principle?

1 Answers   Tata Steel Limited,

---

---

what is o2 analyzer and how it measured ,what is the role of this analyzer in cfbc boiler...

0 Answers   Mittal Steel,

---

What is the function of a diaphagram

5 Answers  

---

What is diff between Ingral orifice and simple orifice?where it use?

3 Answers  

---

The document / drawing that is primarily used in depicting the “Bill of Materials (BOM)” of piping system is the

2 Answers  

---

what is meant by nuclear collector?

0 Answers  

---

cheapest instru-- PMMC, EDM, rectifier, thermocouple.

3 Answers   ONGC,

---

Hi buddies! my name is sachin and i am working as a electrical and instrumentation engineer in a paper plant. right now i am facing a problem and if someone could help me it will be an immense pleasure to me. i am using AC 800M to synchronise DCS500 drives on paper machine and rewinder.communication is on PROFIBUS and we are using NPBA-01 module to link profibus to DC drives.But these days two of these drives are showing a error named FIELDBUS COMM.TIMED OUT and the drives get tripped.I have changed the NPBA module and PROFIBUS cable.So if anyone can do please help me out with this problem.I'll be highly grateful.

0 Answers  

---