# Separation of flow occurs due to reduction of pressure gradient to

1.  Zero

2.  Negligibly low value

3.  The extent such that vapours formation starts

4.  None of these

4

The extent such that vapours formation starts

Explanation :
No Explanation available for this question

# A cylinder is kept on a horizontal boundary past which an ideal fluid flows perpendicular to the cylinder axis. It will experience

1.  No lift force

2.  Some lift foce

3.  Lift force in vertically down ward direction

4.  Lift force in vertically upward direction

4

No lift force

Explanation :
No Explanation available for this question

# In laminar flow

1.  Experimentation i s required for the simplest flow cases

2.  Newton’s law of viscosity applies

3.  Fluid particles move in irregular and haphazard paths

4.  Viscosity is unimportant

4

Newton’s law of viscosity applies

Explanation :
No Explanation available for this question

# Reynolds number for non circular cross section is

1.  V.4P/v

2.  V.P/v

3.  V.2P/4v

4.  V.P/4v

5.  Where V= mean velocity V=kinetic viscosity P= ratio of cross section area to the wetted perimeter

5

V.2P/4v

Explanation :
No Explanation available for this question

# Value of coefficient of compressibility for water at ordinary pressure and temperature is

1.  1000kg/cm3

2.  2100kg/cm3

3.  2700kg/cm3

4.  21,000kg/cm3

4

21,000kg/cm3

Explanation :
No Explanation available for this question

# Unsteady uniform flow is flow through a/an

1.  Expanding tube at an increasing rate

2.  Expanding tube at constant rate

3.  Long pipe at decreasing rate

4.  Long pipe at decreasing rate

4

Long pipe at decreasing rate

Explanation :
No Explanation available for this question

# Thickness of laminar boundary layer at a distance x from the leading edge over flat plate varies as

1.  x

2.  x2

3.  x1/2

4.  x4/5

4

x1/2

Explanation :
No Explanation available for this question

# Thickness of turbulent boundary layer at a distance x from the leading edge over a flat plate varies as

1.  x4/5

2.  x5/4

3.  x2/5

4.  x5/3

4

x4/5

Explanation :
No Explanation available for this question

# When the relationship between Reynolds number and the friction factor  is represented by a straight line,the flow is said to be

1.  Isentropic

2.  Laminar

3.  Turbulent

4.  Vortex

4

Laminar

Explanation :
No Explanation available for this question

# The shear stress distribution for a flowing in between the parallel plates, both at rest, is

1.  Constant over the cross section

2.  Maximum at the mid plane and varies linearly with distance from mid plane

3.  Zero at the midpoint and varies linearly with distance from mid plane

4.  Zero at the plates and varies exponentially to mid point’

4