Answer / pvl

This depends on the design of the turbine. I worked with turbine with 4 critical speed bands. It is the natural harmonic frequency where there is maximum vibrations in the turbine. These speed bands can be more than one. Length, weight and steam entry type are the factors which decide the critical speed bands in a turbine.

what is the operation philosophy of proximity velocity sensor

1 Answers  

---

What is the difference between local indicator(flow) and flow indicator?

2 Answers  

---

what is the difference between SMART and tipical transmeter ?

3 Answers   Sirte Oil Company,

---

What is the solution if rotork motorised control valve showing pink Colour in dcs.

3 Answers   Bhushan Power Steel,

---

where cascade loop use ?

0 Answers   KNPC, KOC,

---

what is the working principal of pribe

0 Answers  

---

What skill/s does the Instrument Technician has?

6 Answers  

---

in my plant 100% feedwater control v/v is air to close but due to instrument air fail,the valve opens but instead of drum level high its get tripped in low low drum level.the urv of level tx is 0 and lrv is -800.pls tell me the reason. for such behaviour.

1 Answers   Sirpur Paper Mill,

---

i am working in the automation company...i want to just know how actully pid control valves are tune????...

1 Answers  

---

What safety precautions you will adopt to work on Steam service control valve?

1 Answers   QAFCO,

---

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

1 Answers  

---

what is output of FOUNDATION FIELD BUS transmitter

0 Answers  

---