Answer / ashwani goel

the pmmc instrument is the cheapest one because EDMis the
most expensive and rectifier and thermocouple types already
contain PMMC intruments. hence pmmc is cheapest

Answer / brijesh kr. bind

pmmc is the cheapest instrument.bcoz edm is costly and pmmc
is also the part of rectifier and thermocouple.

Answer / jignesh

rectifier is cheapest bcoz diode work as arectifier and is
cost is only 1 rs.

what is the input of conductivity sensor and meter during the calibration time and what is the output?

2 Answers  

---

i am going to attend ongc exam this coming june for Graduate Engineer Trainee post if anybody knows the question pattern or have experience plz share it with me

3 Answers   ONGC,

---

what is the difference between SMART and tipical transmeter ?

3 Answers   Sirte Oil Company,

---

What is the loop calibration? Which instrument used to loop calibration and how?

2 Answers   Descon, QCon,

---

what is the difference between 3,4 wire RTD sensor?

6 Answers   HTA Instrumentation,

---

---

I want measure the volumetric flow of gas in waste heat recovery Boiler?Tell me how and which type of instruments required. Plz mail me:naba02222@gmail.com Sam please post the answer .

0 Answers  

---

when a magnet is heated?

0 Answers  

---

what is interlock system and why we use of this?

0 Answers  

---

What is standard of DCS panel design?and what is step of DCS panel design?wiring and type of connector(screw or DB connector)

0 Answers  

---

For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?

0 Answers  

---

What are the application of bernoulli’s theorem?

0 Answers  

---

how to commission furnace ( water heater)

0 Answers   Petrofac,

---