Explore topic-wise MCQs in Fluid Mechanics.

This section includes 7 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.

Calculate the value of rate of change of specific energy for a triangular channel having depth 3.5m and the side slope is 1H:2V. Given:V = 2.5 m/s, dy/dx=8.6 10-4.

A. 3.47 10<sup>-4</sup>m
B. 4.47 10<sup>-4</sup>m
C. 5.47 10<sup>-4</sup>m
D. 6.47 10<sup>-4</sup>m
Answer» D. 6.47 10<sup>-4</sup>m
Discussion
2.

The dimensions of a rectangular channel section is 2.5m 1m. Calculate the rate of change of specific energy if the rate of change of depth is 1.52 10-3m.

A. 1.17 10<sup>-3</sup>m
B. 2.00 10<sup>-3</sup>m
C. 2.03 10<sup>-3</sup>m
D. 2.06 10<sup>-3</sup>m
Answer» B. 2.00 10<sup>-3</sup>m
Discussion
3.

The dimensions of a rectangular channel section is2.5m 1m. Calculate the value of Sf if the bed slope of the channel is 1 in 600. Given: dy/dx=1.52 10-3m.

A. 0.0002
B. 0.0003
C. 0.0004
D. 0.0005
Answer» E.
Discussion
4.

Calculate the value of bed slope of a trapezoidal channel having depth 2m and width 2.5m with a side slope of1H:3V. Given: dy/dx=1.43 10-3; Sf = 0.00002; V = 1.5 m/s.

A. 1 in 1000
B. 1 in 900
C. 1 in 800
D. 1 in 700
Answer» D. 1 in 700
Discussion
5.

Determine the rate of change of depth of a rectangular channel having dimensions 2m 3m and the velocity of flow is 2 m/s.
Given:S0 = 1 in 500 and Sf = 0.0007.

A. 0.63m
B. 1.63m
C. 2.63m
D. 3.63m
Answer» C. 2.63m
Discussion
6.

Calculate the value of Sf for a trapezoidal channel having depth 2m, width 5m and side slope of 1H:1.5V. Given: dy/dx=1.18 10-3,S0 = 1 in 1000, C = 50.

A. 0.00001
B. 0.00002
C. 0.00003
D. 0.00004
Answer» B. 0.00002
Discussion
7.

If the value of rate of change of specific energy is 7.79 10-4 m and Sf = 0.00013, calculate the value of bed slope.

A. 1 in 1000
B. 1 in 1100
C. 1 in 1200
D. 1 in 1300
Answer» C. 1 in 1200
Discussion