Answer / Vidhi Chauhan

Control valve noise can have various sources. Some common causes include: 1) Cavitation: This occurs when the pressure in the valve drops below the vapor pressure of the fluid, creating small cavities or bubbles that collapse and produce noise. 2) Water hammer: Rapid changes in flow rate or pressure can lead to pressure waves that travel through the piping system, causing noise. 3) Chatter: This is a type of noise caused by oscillations within the valve actuator or control system. 4) Wear and tear: Over time, components such as stem packing, seats, and plugs may degrade, leading to increased friction and noise. 5) Poor valve selection: Incorrect valve size, type, or material for the application can lead to excessive noise.

I am currently doing my btech in computer science in Coimbatore.I had intererest to do btech in chemical enginerring but couldnt get a seat. Now what are my options ,scope and future if i take mtech in chemical enginerring? And can i apply for any deemed colleges for mtech chemical enginerring through gate taking my present state into consideration(btech in cse and mtech in chemical enginerring)

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What can cause bulk solids to stop flowing from a bin?

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Explain the largest application for surfactants?

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Where the Induced draft, forced draft & balanced draft furnace are to be used? Selection of furnaces are based on which criteria?

1 Answers   IFFCO, MahaGenco,

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Question 91 - In the application of Theory of Spectrometry in spectrophotometer, let n = N x C x V, V = A x t, e = a x N where n = number of molecules, N = Avogadro's number, V = volume of cuvette, A = area of cuvette, t = thickness of cuvette, C = concentration of fluid in the cuvette, e = extinction coefficient, a = effective area of molecule. (a) By using calculus in dI = -I x a x N x C x dt, prove that ln (I / Io) = -a x N x C x t, where dI is the small difference in I and dt is the small difference in t. I = intensity of light. Io = initial intensity of light. (b) Show by calculations that ln (Io / I) = e x C x t based on the answer in the previous question (a). (c) Find the equation of log (Io / I) as a function of e, C and t based on the answer in the previous question (b).

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If I do M tech in chemical engineering from iit kgp,iit delhi or iit kanpur...what are the job opportunities,and what salary they offered.plz tell me...i had 156 all india rank..i did not take admission ..but this year i m thinking to take admission...

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Chemical Engineering Unit Operation - Which of the sequence below represent a feasible flows of ethanol processing plants using cellulose as starting material? A. raw material --> heat exchanger --> distillation column --> reactor. B. reactor --> distillation column --> raw material --> heat exchanger. C. heat exchanger --> raw material --> distillation column --> reactor. D. raw material --> heat exchanger --> reactor --> distillation column. E. distillation column --> raw material --> reactor --> heat exchanger.

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Are you having any experience in antibody designing?

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What does the catalystic converter on an automobile really do?

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need the type of technical questions in written test

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pls send me HPCL & reliance test paper for chemical engineering.....

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Are there flow velocity restrictions to avoid static charge build up in pipelines?

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