Answer / karna

Diode is two terminal Device ( Anode and Cathode).It will
work only in one direction either positive or negative. If
the diode is forwad bias it will work in forward and it
will oppose in reverse bias vice-verca for Reverse bias.
SCR is three terminal device ( Anode , cathode, gate). By
using SCR we can controll the Primary circuit. It is
Control or switching operation by third terminal i.e Gate

Answer / faiyaz ahmad

Diode is semiconductor device its two terminal anode and cathode it will work only two direction either forward and reverse anode is Positive terminal and cathode is negative terminal the electron will be flow positive to negative according to direction if diode will be forward bias if diode will be reverse bias then just opposite and SCR is three terminal device anode cathode and gate third terminal is used to switching and amplifying the circuit

why t/c is connected parallel and what is the purpose of it

2 Answers  

---

What is the DIfferences between SMART transmitters and PROFIBUS DP/PA Transmitters?

4 Answers  

---

1,why we use 4-20 ma output of all instrument qhy not use 0- 20, 2,what is the different between PLC & DCS. 3,how can we meaure maximum span of new flowmeter if not given any information.

4 Answers   Reliance,

---

Can you explain drawbacks between P,I,D & PID controller

1 Answers   JSW, Priya Cement, TPL,

---

1- Explain about HPM 2- What is the FSC and explain the configuration of FSC 3- explain the complete loop of vibration, how it works (field to control room) 4- What is the use of proxymitter? 5- During job your partner effected with H2S then what you have to do. 6- what type of gland packing uses when valve glind is leaking.

1 Answers  

---

how can i calibrate the temperatuture gauge used by temperature bath(dry block) i mean step by step procedure?

1 Answers   Texas,

---

please send me some question papers of HPCL aptitude test ?? please send it to bipinb.28@gmail.com ...

0 Answers   HPCL,

---

how to calibrate TT transmitter

3 Answers  

---

what is diff between the centrifugal and reciprocating

2 Answers  

---

list of flame proof certification ?

1 Answers   TATA,

---

Lube oil pressure transmitter local it's showing 9.8 kg/cm2 but dcs side it's showing 9.26 like that what is the reason?

3 Answers   Edac,

---

what is cascade loop and how it work and why it used instead of PID single loop? In cascade, Which loop is faster and slower? Please explain with loop drawing and example...

2 Answers   Honeywell,

---