# The unit of dynamic viscosity of a fluid is

1.  m2/s

2.  Ns/m23

3.  Pas/m3

4.  kgs2/m2

4

Ns/m23

Explanation :
No Explanation available for this question

# The centre of pressure of a liquid on a plane surface immersed vertically in a static body of liquid,always lies below the centroid of the surface area, because

1.  in liquids the pressure acting is same in all directions

2.  there is no shear stress in liquids at rest

3.  the liquid pressure is constant over depth

4.  the liquid pressure increasses linearly with depth

4

there is no shear stress in liquids at rest

Explanation :
No Explanation available for this question

# One of the following statements is true with regards to bodies that float or are submerged in liquids

1.  For a body wholly submerged in a liquid the stability is ensured if the centre of buoyancy is below the centre of gravity of the body

2.  For a body floating in a liquid the stability is ensured if the centre of buoyancy is below the centre of gravity of the body

3.   For a body floating in a liquid the stability is ensured if the centre of buoyany and the centre of gravity, regardless of the relative positions of the centre of buoancy and gravity

4.  For a body floating in a liquid the stability is ensured if the centre of buoyancy is below the centre of gravity and the metacentre is above both the centres of gravity and buoyancy

4

For a body floating in a liquid the stability is ensured if the centre of buoyancy is below the centre of gravity and the metacentre is above both the centres of gravity and buoyancy

Explanation :
No Explanation available for this question

# The kinetic energy correction factor for a fully developed laminar flow through a circular pipe is

1.  1.00

2.  1.33

3.  2.00

4.  1.50

4

2.00

Explanation :
No Explanation available for this question

# Two flow patterns are represented by their stream functions  ψ1 and ψ2 as given below : ψ1= x2 + y2,ψ2 = 2xy.If these two parterns are superposed on one another, the resulting streamline pattern can be represented by one of the following

1.  A family of parallel straight lines

2.  A family of circles

3.  A family of parabolas

4.  A family of hyperbolas

4

A family of circles

Explanation :
No Explanation available for this question

# While deriving an expression for loss of head due to a sudden expansion in a pipe, in addition to the continuity and impulse - momentum equations, one of the following assumptions is made

1.  Head loss due to friction is equal to the head loss in eddying motion

2.  The mean pressure in eddying fluid is equal to the downstream pressure

3.  The mean pressure in eddying fluids is equal to the upstream pressure

4.  Head lost in eddies is neglected

4

The mean pressure in eddying fluids is equal to the upstream pressure

Explanation :
No Explanation available for this question

# If a single pipe of length L and diameter D is to be replaced by three pipes of same material, same length and equal diameter d (d< D), to convey the same total discharge under the same head loss, then d and D are related by

1.  d=D/32/5

2.  d=D/35/3

3.  d=D/32/3

4.  d=D/33/2

4

d=D/32/5

Explanation :
No Explanation available for this question

# The downstream end of long prismatic channel of mild slope ends in a pool created by a dam. The resulting non- uniform water surface profile can be described as one of the following

1.  M3 profile ending in a hydraulic pump

2.  M1, profile that les above normal depth line

3.  M2 profile that lies between critical and normal depth lines

4.  M3 profile that lies between critical and normal depth lines

4

M3 profile that lies between critical and normal depth lines

Explanation :
No Explanation available for this question

# A hydraulic turbine develops a power on 104 metric horse power while running at a speed of 100 revolutions per minute, under a head of 40 m.Its specific speed is nearest to one of the following

1.  100

2.  628

3.  523

4.  314

4

100

Explanation :
No Explanation available for this question

# A hyetograph is a graph representing

1.  rainfall volume with lime

2.  rainfall intensity with time

3.  rainfall intensity with duration

4.  rainfall intensity over an area

4