Test: Fluid Mechanics Level - 4 - Civil Engineering (CE) MCQ

The time of oscillation of a floating body is given by
Where
K = Radius of Gyration of the floating body about its centre of gravity
h = Metacentric height of the floating body

A cylindrical body of cross-sectional area A height H and density ρ_s is immersed to a depth h in a liquid of density ρ and tied down to bottom with a string then the tension in the string is

There is no geometrical distinction between the streamline, pathline and streakline in case of

Stream line, path line and streak line are identical when the

Match List I with List II and select the correct answer using the codes given below the lists:

The continuity equation in differential form is

Under which of the following conditions will the equation = constant, will be valid in the whole flow field ?

1. Flow is rotational

2. Flow is irrotational

3. Flow is incompressible

4. Flow is steady

5. Flow is laminar

​Venturimeter consists of following parts :

1. Diverging part

2. Throat

3. Main inlet pipe

4. Short converging part

Select the correct sequence of parts:

The range for coefficient of discharge (C_d) for a venturimeter is

In the siphon in figure below assuming ideal flow, the pressure P_B

The flow of fluid through a pipe is laminar when

An oil of kinematic viscosity 0.5 stokes flows through a pipe of 4 cm diameter. The flow is critical at a velocity of about

In the Navier-Stokes equations, the forces considered are

Navier-Stoke's equation represents the conservation of

For laminar flow between two fixed parallel plates, the flow velocity

Capillary tube viscometers used for measurement of viscosity are based on

The kinematic viscosity of oil of specific gravity .8 is .0005 .This oil is used for lubrication of shaft of diameter .4 m and rotates at 190 rpm. Calculate the power lost in the bearing for a sleeve length of 90mm. The thickness of the oil film is 1.5mm.

Pressure drop in a 100 mm diameter horizontal pipe is 50 kPa over a length of 10 m. The shear stress at the pipe wall is

The pressure drop for a relatively low Reynolds number flow in a 600 mm, 30 m long pipe line is 70 kPa. What is the wall shear stress?

The body whose surface does not coincide with the streamline when places in a flow is called as 

Shear velocity is

The head loss in a sudden expansion from 4 cm diameter pipe to 6 cm diameter pipe in terms of velocity V1 in the smaller diameter pipe is: