Fluid flow rate Q, can be measured easily with the help of a venturi tube, in which the difference of two pressures, \[\Delta \,P,\] measured at an upstream point and at the smallest cross-section of the tube, is used. If a relation \[\Delta \,P\propto {{Q}^{n}}\] exists, then n is equal to:

\[\tau =-\,\,\frac{\partial p\left( r/2 \right)}{\partial x}\]

Fluid flow rate Q, can be measured easily with the help of a venturi t

1.	Fluid flow rate Q, can be measured easily with the help of a venturi tube, in which the difference of two pressures, \[\Delta \,P,\] measured at an upstream point and at the smallest cross-section of the tube, is used. If a relation \[\Delta \,P\propto {{Q}^{n}}\] exists, then n is equal to:
A.	\[\frac{1}{3}\]
B.	\[\frac{1}{2}\]
C.	\[\tau =-\,\,\frac{\partial p\left( r/2 \right)}{\partial x}\]
D.	2
Answer» E.

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Fluid flow rate Q, can be measured easily with the help of a venturi tube, in which the difference of two pressures, \[\Delta \,P,\] measured at an upstream point and at the smallest cross-section of the tube, is used. If a relation \[\Delta \,P\propto {{Q}^{n}}\] exists, then n is equal to:

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