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AE-JE (ME) || Fluid Mechanics Quiz - 6

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Question 1

The hydrodynamic boundary layer thickness is defined as the distance from the surface where the _________.

Question 2

If δ₁ and δ₂ denote boundary layer thickness at a point distance x from the leading edge and the Reynold number is varying at that point. It is 100 and 256 in case I and case II respectively, then ratio of δ₁/δ₂ will be

Question 3

In Laminar flow which force is dominant

Question 4

In a boundary layer at a certain location, the boundary layer thickness is

0.5 cm, displacement thickness is

0.15 cm and the momentum thickness is

0.0585 cm the shape factor H at this location is:

Question 5

Boundary layer flow seperates from the surface if

Question 6

Displacement thickness (

)is given by

Question 7

Drag force is affected by__________

Question 8

Consider the following statements :
1) The phenomenon of lift produced by imposing circulation over a doublet in a uniform flow is known as Magnus effect.
2) The path deviation of a cricket ball from its original trajectory is due to the Magnus effect.
Which of these statements is/are correct?

Question 9

The drag which depends only on the shape and orientation of the body is

Question 10

The value for drag coefficient C_D for sphere moving in a fluid is:

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AE & JE Exams Mechanical Engineering

Dec 2AE & JE Exams