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Chemical Engineering - Fluid Mechanics

Exercise

"It takes a very long time to become young."
- Pablo Picasso
1. 

The fluid property, due to which, mercury does not wet the glass is
A. surface tension
B. viscosity
C. cohesion
D. adhesion
2. 

Laminar flow of a Newtonion fluid ceases to exist, when the Reynolds number exceeds
A. 4000B. 2100
C. 1500D. 3000
3. 

When the momentum of one fluid is used for moving another fluid, such a device is called a/an
A. jet pump
B. blower
C. acid egg
D. none of these
4. 

The normal stress is the same in all directions at a point in a fluid, when the fluid is
A. non-viscous.
B. incompressible.
C. both (a) and (b).
D. having no motion of one fluid layer relative to the other.
5. 

Head developed by a centrifugal pump depends on its
A. speed
B. impeller diameter
C. both (a) and (b)
D. neither (a) nor (b)

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