Answer / ramit sharma

Control valves are used to control conditions such as
flow,pressure,temperature and liquid level by fully or
partially opening or closing in response to signals
received from controllers that compare a setpoint to a
process variable whose value is provided by sensors that
monitor changes in such conditions.
The opening or closing of control valves is done by means
of electrical,hydraulic or pneumatic system.

Answer / anish

valve is a device used to either control the flow rate or
to fully shutdown flow a control valve is automatically
controled either pneumatically or current(solenoid valve)

What is microstir?

1 Answers  

---

How can you keep our seawater used for heat rejection clean before entering our heat exchangers?

0 Answers  

---

which chemical reaction has the maximum evolution of heat?

3 Answers   IOCL,

---

Why should a magnesium ribbon be cleaned before burning in air?

0 Answers  

---

What are some guidelines for designing for liquid and gas velocities in process plant piping?

0 Answers  

---

Under what circumstances are vortex flowmeters the most accurate?

0 Answers  

---

hi i am chemical engg. 4 year student i am not placed till year what will i do for my batter futere

3 Answers  

---

Chemical Engineering Material Balance - Three hundred gallons of a mixture containing 75.0 wt % ethanol and 25 wt % water (mixture specific gravity = 0.877) and a quantity of a 40.0 wt % ethanol - 60 wt % water mixture (specific gravity = 0.952) are blended to produce a mixture containing 60.0 wt % ethanol. The specific gravity of a substance is the ratio of density of a substance compared to the density of water. The symbol of weight percent is wt %. (a) Estimate the specific gravity of the 60 % mixture by assuming that y = mx c where y is wt % ethanol, x is mixture specific gravity. Values for m and c are constants. (b) Determine the required volume of the 40 % mixture.

1 Answers  

---

How can we derive power factor equation p=vi cos phi?

0 Answers  

---

What types of valves are recommended for slurry services?

0 Answers  

---

ENGINEERING MATHEMATICS - EXAMPLE 8.4 : Let 1 ^ 1 = 1, 2 ^ 2 = 4, 3 ^ 3 = 27. By using the Excel computer programming - either by Solver or Goal Seek, find the value of v for the Van der Waals equation (P - a / v ^2) (v - b) = RT where a = 18.82, b = 0.1193, P = 2, R = 0.082, T = 5000 for benzene. Describe briefly how to use Solver and Goal Seek in Excel program of computer to find the solution quickly.

1 Answers  

---

Oil and fat containing food items are flushed with nitrogen. Why?

0 Answers  

---