Explore topic-wise MCQs in Fluid Mechanics.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics knowledge and support exam preparation. Choose a topic below to get started.

1.

In a two dimensional flow, the component of the velocity along the X-axis and the Y-axis are u = ax + by and v = ax by. For what condition will the flow field be continuous?

A. impossible
B. possible if a = b
C. possible if a = 2b
D. possible for all values of a and b
Answer» E.
Discussion
2.

In a two dimensional flow, the component of the velocity along the X-axis and the Y-axis are u = ax2 + bxy and v = cxy +dy2. What should be the condition for the flow field to be continuous?

A. (a + b)x + (c + d)y = 0
B. (a + c)x + (b + d)y = 0
C. (2a + b)x + (c + 2d)y = 0
D. (2a + c)x + (b + 2d)y = 0
Answer» E.
Discussion
3.

In a two dimensional flow, the component of the velocity along the X-axis and the Y-axis are u = axy and v = bx2 + cy2. What should be the condition for the flow field to be continuous?

A. a + b = 0
B. a + c = 0
C. a + 2b = 0
D. a + 2c = 0
Answer» E.
Discussion
4.

In a two dimensional flow, the component of the velocity along the X-axis is u = ax2 + bxy + cy2.If v = 0 at y = 0, what will be the velocity component in the Y-direction?

A. v = 2axy + by<sup>2</sup>
B. v = 2axy + b 2 y<sup>2</sup>
C. v = -2axy b 2 y<sup>2</sup>
D. v = -axy b 2 y<sup>2</sup>
Answer» D. v = -axy b 2 y<sup>2</sup>
Discussion
5.

Two pipes of diameters d1 and d2 converge to form a pipe of diameter d. If the liquid flows with a velocity of v1 and v2 in the two pipes, what will be the flow velocity in the third pipe?

A. ( frac{d_1v_1+d_2v_2}{d} )
B. ( frac{d^2(v_1+v_2)}{d} )
C. ( frac{(d_1+d_2)^2(v_1+v_2)}{d^2} )
D. ( frac{d_1^2 v_1 + d_2^2 v_2}{d^2} )
Answer» E.
Discussion
6.

If a liquid enters a pipe of diameter d with a velocity v, what will it s velocity at the exit if the diameter reduces to 0.5d?

A. v
B. 0.5v
C. 2v
D. 4v
Answer» E.
Discussion