Answer / rajesh

dc motor works on principle of electromagnetic field creation
and torque production due to magnetic componentn(rotor )
placed along it in oriented direction and it is reversible

drives is a ckt to control speed of motor (using scr)
e.g dc drive for dc motor

ABB DCS (AC 800 M)redundency take howmany milliseconds to switch from master controller to slave?should be less than DCS scanning time?

2 Answers   SCS,

---

Can please tell mi about SIOS, PRM, SERVER, and what is the diference between PIN LAN, PCS LAN,APC Server, and please send the Doc if possible for referance,mail id patil_amit17@yahoo.com

0 Answers  

---

what is function of switch, and how is it work, explain with difination

0 Answers   Bapco Bahrain Petroleum Company,

---

what is difference between fork type and capacitance type level switch. where it is using

0 Answers  

---

WHAT IS THE Differance b/w on/off & pid control valve?

10 Answers  

---

how manys ways dp transmitter can be calibrated having range of -150 to 400mmwc,what side pressure u will apply?

3 Answers  

---

what is difference between pressure,flow and level control valve.

3 Answers  

---

How is flow measured in square root?

0 Answers  

---

if we put any thermocouple on a table in a room without any connection,what temperature should it show.

3 Answers  

---

why we go for pcbs

2 Answers  

---

If boiler drum level transmitter is not working properly what you will do for resolving the problem in plant running condition?

2 Answers  

---

if RTD damage in plant, how we know?

5 Answers   Reliance,

---