GATE XE Kinematics of Fluid Motion PYQs & Answers

Questions 1–10 of 15. Imported answers require independent review unless marked reviewed.

Which of the following statements about streamlines, patlines, and streaklines is/are correct?

Your answerSelect all correct options. You can choose more than one.

A streamline is a curve that is everywhere tangent to the instantaneous local velocity vector.

Two streamlines can intersect at a point in a flow.

A pathline is the locus of fluid particles passing sequentially through a particular point.

For steady flow, streamlines, pathlines, and streaklines are the same.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The velocity of a fluid part in a flow is given as:

where

are constants, and

are unit vectors in x-, y-, z-directions, respectively. Which of the following statements is/are correct?

Your answerSelect all correct options. You can choose more than one.

The flow is steady for any value of a, b, and c.

At a point

, the velocity component in x-direction is higher than the velocity components in y- and z-directions for

, and

The point

is a stagnation point for

and

The acceleration of the flow along the x-direction is not constant for any value of a, b, and c.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Fluid at a constant flow rate passes through a long, straight, cylindrical pipe that has an axisymmetric convergent section at the end. Which one of the following options correctly represents the velocity field in the converging section in cylindrical

coordinates?

Your answerChoose one option.

Two-dimensional function of

and

One-dimensional function of

Two-dimensional function of

and

One-dimensional function of

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Consider the following Statements [1] and [2].

Statement [1]: The Eulerian study focuses attention on individual particle and its motion is observed as a function of time.

Statement [2]: The Lagrangian study focuses attention on the motion of the particles pass through an identified point.

Which one of the following options identifies the correctness of the given statements?

Your answerChoose one option.

Both [1] and [2] are correct.

Both [1] and [2] are NOT correct.

[1] is correct, but [2] is NOT correct.

[1] is NOT correct, but [2] is correct.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The locus of temporary locations of all particles that have passed through a fixed point in the flow field at a particular instant is known as

Your answerChoose one option.

streamline.

streakline.

pathline.

timeline.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The velocity in a one-dimensional flow is given by

m/s, where

/s and

m. The acceleration (in m/s

, answer in integer) at

m is _____.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

For a two-dimensional flow field given as

, a streamline passes through points

and

. The value of

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The velocity and acceleration of a fluid particle are given as

m/s and

m/s

, respectively. The magnitude of the component of acceleration (in m/s

, rounded off to two decimal places) of the fluid particle along the streamline is ______.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Which of the following statement(s) is/are true for streamlines in a steady incompressible flow?

Your answerSelect all correct options. You can choose more than one.

Two streamlines cannot intersect each other.

Flow rate increases between two diverging streamlines.

Flow rate decreases between two diverging streamlines.

Stream function has a constant value along a streamline.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Which one of the following options is TRUE?

Your answerChoose one option.

Pathlines and streaklines are the same in an unsteady flow, and streamlines are tangent to the local fluid velocity at a point.

Streamlines are perpendicular to the local fluid velocity at a point, and streamlines and streaklines are the same in a steady flow.

Pathlines and streaklines are the same in an unsteady flow, and streamlines and streaklines are the same in a steady flow.

Streamlines are tangential to the local fluid velocity at a point, and streamlines and streaklines are the same in a steady flow.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE XE Kinematics of Fluid Motion PYQs

How to practice Kinematics of Fluid Motion

Question 29

Question 37

Question 22

Question 24

Question 23

Question 36

Question 29

Question 38

Question 27

Question 2