Test: Fluid Flow Kinematics - 3

# Test: Fluid Flow Kinematics - 3

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Test: Fluid Flow Kinematics - 3 - Question 1

### Consider the following parameters related to fluid flow: 1. Vorticity 2. Velocity potential 3. Stream function Among these, those which exist both in rotational flows and irrotational flows would include

Test: Fluid Flow Kinematics - 3 - Question 2

### The Toricelli theorem gives velocity of jet as

Test: Fluid Flow Kinematics - 3 - Question 3

### The basic principles of fluid flow are 1. conservation of mass 2. conservation of energy 3. conservation of momentum Which of these statements are correct?

Test: Fluid Flow Kinematics - 3 - Question 4

The mean velocities at two ends of a stream tube 10 cm apart are 2.5 m/s and 3 m/s. The convectional tangential acceleration mid-way is

Detailed Solution for Test: Fluid Flow Kinematics - 3 - Question 4

Convectional tangential acceleration is given by

= 13.75 m/sec2

Test: Fluid Flow Kinematics - 3 - Question 5

The flow of water in a wash hand basin when it is being emptied through a central opening, is an example of

Detailed Solution for Test: Fluid Flow Kinematics - 3 - Question 5

Free vortex flow is irrotational flow and total head (energy) remains constant throughout flow field.

Test: Fluid Flow Kinematics - 3 - Question 6

Given the x - component of the velocity u = 6xy - 2x2, the y-component of the flow velocity is given by:

Detailed Solution for Test: Fluid Flow Kinematics - 3 - Question 6

The flow must satisfy continuity equation,

Test: Fluid Flow Kinematics - 3 - Question 7

Which one of the following represents two dimensional rotational flow?

Detailed Solution for Test: Fluid Flow Kinematics - 3 - Question 7

For rotational flow,

So

Test: Fluid Flow Kinematics - 3 - Question 8

If flow velocity in x and y directions are given by u = 2x + 3y and v = - 2y. The circulation around the circle of radius 2 unit will be

Detailed Solution for Test: Fluid Flow Kinematics - 3 - Question 8

u = 2x + 3y
v = - 2y

vorticity = 2 x rotational velocity
= - 3
circulation = vorticity x area

Test: Fluid Flow Kinematics - 3 - Question 9

Match List-I (stream line pattern) with List-II (type of acceleration) and select the correct answer using the code given below the lists:

Codes:

Test: Fluid Flow Kinematics - 3 - Question 10

A stream function is given by, ψ = 2x2y + (x + 1 )y2. The flow rate across a line joining points A(3, 0) and B(0, 2) is

Detailed Solution for Test: Fluid Flow Kinematics - 3 - Question 10

∴ Q = |0 - 4I = 4 units.

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