Answer / akhil pawar

in flashing, upstream pressure decreases to vana contracta
point.at this point,pressure is called as vena contracta
pressure.after this point , pressure recovery starts but its
not that enough to take down stream pressure above the
vapour pressure. means downstream press< vapour press.as a
result bubbles are formed and they remain there ,not
collapas.this is flashing,combination og liquid and vapour
flow at downstram.
in CAVITATION also, same situation arises.
only difference is downstream pressure is > vapour pressure,
therefore bubbles formed are burst.

I saw one P&ID 6" control valve has been connected with 8" process line, and 2" valve also connected in parallel with 6" valve. why the 2" valve connected in parallel, Is there any technical reason. please clarify. With Regards-Kittu

5 Answers   GNFC,

---

I want to buy a seal kit of a pneumatic power cylinder.But I don't know it's specification.So please help me to know its specification.

0 Answers  

---

what is novram ic number of foxboro 762cna microcontroller ?thank

1 Answers  

---

What is stripper & spilitter ? Diffrence in this.?

0 Answers   JSW,

---

i want the equation of this question. Tranmitter range is 120 mmwc and dcs flow range is 1700 nm3/hr. if i want to change dcs range from 1700 to 2400 nm3/hr then how much dp i have to enter in transmitter

2 Answers   GMR,

---

how checking is done in fiber optic cable? explain the working of RTU?

5 Answers   PSU,

---

what is the difference between cold loop and hot loop

2 Answers  

---

1)how can calibrate temperature transmitter? 2)how can calibrate flow transmitter? 3)how can calibrate level transmitter?

3 Answers   ccic, Emerson, JK Pharma, NIGC, Rockwell, UltraTech,

---

what is the main supply source for pressure transmitter?

1 Answers  

---

How to calibration coriolis flow meter?

0 Answers  

---

how can you set a zero and span of transmitter?

1 Answers   Rockwell,

---

What are three main programming in PLC

5 Answers  

---