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If R(e)gt2000, then which type of flow e...

If `R_(e)gt2000`, then which type of flow exist ?

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If R_(e)lt1000 , then which type of flow exist ?

Assertion:- For Reynolds number R_(e)gt2000m , the flow of fluid is turbulent. Reason:- Inertial forces are dominant compared to the viscous forces at such high Reynolds number.

If P(A | B) gt P(A) then which of the following is true ?

Assertion : For turbulent flow Reynolds number R_(e)gt2000 . Reason : For high value of Reynold number internal force is more effective than viscous force.

PQ is a current - carrying long straight conductor in the plance of the paper as shown in the following figure. A and B are two points at distances r_(1) and r_(2) from it . If r_(2) gt r_(2) at which point will the strength of the magnetic field be greater ? Justify your answer .

Different substrates get oxidized during respiration. How does Respiratory Quotient (RQ) indicate which type of substrate,i.e., carbohydrate, fat or protein is getting oxidized > R . Q. = (A)/(B) . What do A and B stand for ? What type of substrates have R.Q. of 1, lt 1 or gt 1 ?

Range of Raynolds number are given in Column -I and types of flow are given in Column -II.Match them appropriately.

KUMAR PRAKASHAN-MECHANICAL PROPERTIES OF FLUIDS -SECTION-A Try Yourself (VSQs)
  1. Show that Reynolds number is dimensionless. R(e)=(rhovd)/(eta)

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  2. If R(e)lt1000 , then which type of flow exist ?

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  3. If R(e)gt2000, then which type of flow exist ?

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  4. What is the value of Reynolds number for unsteady flow ?

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  5. What is critical velocity ? Write its equation.

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  6. Write a formula for critical velocity .

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  7. Give the limitations and uses of turbulence.

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  8. Give the limitations and uses of turbulence.

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  9. What are cohesive forces ?

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  10. Write the necessary condition for water drop to stick to glass .

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  11. What is called maximum distance for which the molecules can exert attr...

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  12. What is sphere of molecular action ?

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  13. Define surface of the liquid .

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  14. In what direction the force exert on the molecular of surface ? OR W...

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  15. Which molecule has more potential energy ?

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  16. For stability of system , what should be its potential energy ? More o...

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  17. As the area of surface is large then potentials energy of molecules ...

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  18. As the area of surface is small then potential energy of its molecule...

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  19. Why the surface of a liquid have tendency to minimize its area ?

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  20. The free surface of liquid has a tendency to contract . The property...

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