Answer / atul $onawane

electromagnetic flow meter works on the principle of fadays
law of induction. in this voltage induced in the conductor is
proportional to the velocity of fluid(conducting). only
conducting fluids and gases are used .

Answer / rajesh l parmar

Electromagnetic flow meter works on a principal of
faraday’s law or electromagnetic induction which states
that when a current carrying coinductor moves through a
stationary traverse magnetic field, then e.m.f. is induced
between the ends of the conductor and this e.m.f. is
proportional to relative velocity between conductor and
magnetic field

E = BLV where

B = magnetic induction

L = length of a conductor

V = velocity of the conductor relative to the magnetic
field

It consists of a flow tube inside a pipe which carries a
fluid flow. So when the fluid is passed through the flow
tube, it is visualized as a current carrying conductor
having a length equal to inside diameter of the flow tube.

Now the gas, steam and oils are having low electrical
conductance. So no E.M.F. can be generated in such case. So
electromagnetic flow meters can not be used for metering
gas, oil and steam.

In general electromagnetic flow meters can only be used to
measure the flow of fluid which are sufficient conductive
to generate e.m.f.

Answer / rajesh l parmar

Electromagnetic flow meter works on a principal of
faraday’s law or electromagnetic induction which states
that when a current carrying coinductor moves through a
stationary traverse magnetic field, then e.m.f. is induced
between the ends of the conductor and this e.m.f. is
proportional to relative velocity between conductor and
magnetic field

E = BLV where

B = magnetic induction

L = length of a conductor

V = velocity of the conductor relative to the magnetic
field

It consists of a flow tube inside a pipe which carries a
fluid flow. So when the fluid is passed through the flow
tube, it is visualized as a current carrying conductor
having a length equal to inside diameter of the flow tube.

Now the gas, steam and oils are having low electrical
conductance. So no E.M.F. can be generated in such case. So
electromagnetic flow meters can not be used for metering
gas, oil and steam.

In general electromagnetic flow meters can only be used to
measure the flow of fluid which are sufficient conductive
to generate e.m.f.

Answer / m n gopinath

electromagnetic meters are generally used with conductive
liquids having conductivity greater than 50 microsiemens/cm.

DM Water, gases,steams and hydrocarbons are non conductive,
hence cannot be used.

..however it can be used in acid or alkali services

what is cv value in valves

3 Answers   IFFCO,

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What are the three classes of organic solvents?

0 Answers  

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1 Answers  

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Is there any way to remove residual product left in pipes after a batch operation?

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Question 57 – There are 2 simultaneous equations : (A1) x + (B1) y = D1 and (A2) x + (B2) y = D2. (a) By using Excel program, find the values of x and y when A1 = 80, A2 = 150, B1 = 52, B2 = 100, D1 = 3.5 and D2 = 2.3. (b) Write the expression of Excel in the form of =MMULT(MINVERSE(W:X),Y:Z) in order to get the values of x and y. W, X, Y and Z may be A1, A2, B1, B2, D1 and D2.

1 Answers  

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how does the properties of an element changes by increasing protons and electrons?

0 Answers  

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QUANTUM BIOLOGY - EXAMPLE 33.3 : In quantum biology, microtubule is used to store information in a cell. At temperature of T = 300 K, measured current I in a probe is directly proportional to the supplied voltage V, when passing through a microtubule with resistance R. (a) Form an equation of V as a function of I involving k as a constant. (b) If the microtubule has R = 1 ohm at such condition, find the value of V when I = 2 A. Hint : Ohm's law. (c) Find the relationship of k as a function of R.

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Explain how can viscosity affect the design of a mixer?

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What are the some common problems associated with dilute phase pneumatic conveying?

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Question 109 - (a) Acceptable wavefunction in quantum mechanics in the range of : negative infinity < x < positive infinity, vanishes at least at one boundary. Which of the following is the wavefunction or are the wavefunctions of acceptable theory : P = x, P = | x |, P = sin x, P = exp (-x), P = exp (-| x |)? State the reason. (b) Let linear momentum operator P = -ih d / dz. The wavefunction is S = exp (-ikz) where i x i = -1, k and h are constants. Find the linear momentum of such wavefunction by using the term P x S.

1 Answers  

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0 Answers   HPCL,

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