Explore topic-wise MCQs in Fluid Mechanics.

This section includes 13 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.

Find the discharge over a cipolletti weir of length 1.3 m when the head over the weir is 0.65 m. Take Cd = 0.60.

A. 2.12 m3/s
B. 1.21 m3/s
C. 2.5 m3/s
D. 1.5 m3/s
Answer» C. 2.5 m3/s
Discussion
2.

Find the discharge over a cipolletti weir of length 1.5 m when the head over the weir is 0.85 m. Take Cd = 0.61.

A. 2.12 m3/s
B. 1.25 m3/s
C. 2.5 m3/s
D. 1.5 m3/s
Answer» B. 1.25 m3/s
Discussion
3.

The head of water over a rectangular weir is 26 cm. The length of the crest of the weir end contraction suppressed is 1.25 m. Find the discharge using the Francis formula.

A. 0.304 m3/s
B. 0.502 m3/s
C. 0.350 m3/s
D. 0.625 m3/s
Answer» B. 0.502 m3/s
Discussion
4.

In Bazin’s formula, the discharge is inversely proportional to the length of weir.

A. True
B. False
Answer» C.
Discussion
5.

In Francis formula, the effective length is –

A. L-0.2H
B. L-0.4H
C. L-0.3H
D. L-0.1H
Answer» B. L-0.4H
Discussion
6.

FIND_THE_DISCHARGE_OVER_A_CIPOLLETTI_WEIR_OF_LENGTH_1.5_M_WHEN_THE_HEAD_OVER_THE_WEIR_IS_0.85_M._TAKE_CD_=_0.61.?$

A. 2.12 m<sup>3</sup>/s
B. 1.25 m<sup>3</sup>/s
C. 2.5 m<sup>3</sup>/s
D. 1.5 m<sup>3</sup>/s
Answer» B. 1.25 m<sup>3</sup>/s
Discussion
7.

Find the discharge over a cipolletti weir of length 1.3 m when the head over the weir is 0.65 m. Take Cd = 0.60.$

A. 2.12 m<sup>3</sup>/s
B. 1.21 m<sup>3</sup>/s
C. 2.5 m<sup>3</sup>/s
D. 1.5 m<sup>3</sup>/s
Answer» C. 2.5 m<sup>3</sup>/s
Discussion
8.

The head of water over a rectangular weir is 28 cm. The length of the crest of the weir end contraction suppressed is 1.27 m. Find the discharge using the Francis formula.

A. 0.346 m<sup>3</sup>/s
B. 0.556 m<sup>3</sup>/s
C. 0.788 m<sup>3</sup>/s
D. 0.225 m<sup>3</sup>/s
Answer» B. 0.556 m<sup>3</sup>/s
Discussion
9.

The head of water over a rectangular weir is 38 cm. The length of the crest of the weir end contraction suppressed is 1.3 m. Find the discharge using the Francis formula.

A. 0.56 m<sup>3</sup>/s
B. 0.75 m<sup>3</sup>/s
C. 0.85 m<sup>3</sup>/s
D. 0.69 m<sup>3</sup>/s
Answer» B. 0.75 m<sup>3</sup>/s
Discussion
10.

In Bazin’s formula, the discharge is inversely proportional to the length of weir.$

A. True
B. False
Answer» C.
Discussion
11.

In Francis empirical expression for discharge, the relation between head of water and discharge is

A. Q is directly proportional to H
B. Q is directly proportional to H<sup>1.5</sup>
C. Q is directly proportional to H<sup>2.5</sup>
D. Q is directly proportional to H<sup>0.5</sup>
Answer» C. Q is directly proportional to H<sup>2.5</sup>
Discussion
12.

In Francis formula, the effective length is –$

A. L-0.2H
B. L-0.4H
C. L-0.3H
D. L-0.1H
Answer» B. L-0.4H
Discussion
13.

What is the reduction in crest length due to each end contraction?

A. 0.1H
B. 0.2H
C. 0.15H
D. 0.25H
Answer» B. 0.2H
Discussion