Explore topic-wise MCQs in Fluid Mechanics.

This section includes 8 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.

The minimum specific energy of a rectangular channel is 1.3m and the base width of the channel is 10m, calculate the discharge through the channel.

A. 10 m<sup>3</sup>/s
B. 15 m<sup>3</sup>/s
C. 20m<sup>3</sup>/s
D. 25m<sup>3</sup>/s
Answer» E.
Discussion
2.

The base width of a rectangular channel is 4m and the maximum discharge through the channel is 10 m3/s, calculate the specific energy.

A. 0.7m
B. 1.0m
C. 1.3m
D. 1.6m
Answer» D. 1.6m
Discussion
3.

Calculate the minimum specific energy of a rectangular channel having critical depth of 1.5m.

A. 3.25m
B. 2.25m
C. 1.25m
D. 0.25m
Answer» C. 1.25m
Discussion
4.

Estimate the critical depth in case of a rectangular channel having usual dimensions.

A. y<sub>c</sub> = ( sqrt{ frac{q^2}{g}} )
B. y<sub>c</sub> = ( sqrt[3]{ frac{q^2}{g}} )
C. y<sub>c</sub> = ( sqrt{ frac{q}{g}} )
D. y<sub>c</sub> = ( sqrt[3]{ frac{q}{g}} )
Answer» C. y<sub>c</sub> = ( sqrt{ frac{q}{g}} )
Discussion
5.

Calculate the specific energy in case of rectangular channel having discharge Q and yc is the critical depth

A. E = ( frac{y_c}{2} )
B. E = ( frac{3}{2} ) y<sub>c</sub>
C. E = 2y<sub>c</sub>
D. E = 3y<sub>c</sub>
Answer» C. E = 2y<sub>c</sub>
Discussion
6.

Determine the velocity in case of critical flow having top width T and area A.

A. V = gD
B. V = ( sqrt{gD} )
C. V = gD<sup>2</sup>
D. V = g ( frac{D}{2} )
Answer» C. V = gD<sup>2</sup>
Discussion
7.

What is the condition for critical flow in case of maximum discharge?

A. ( frac{Q}{g} = frac{A}{T} )
B. ( frac{Q^2}{g} = frac{A^2}{T} )
C. ( frac{Q}{g} = frac{A^3}{T} )
D. ( frac{Q^2}{g} = frac{A^3}{T} )
Answer» E.
Discussion
8.

What is the condition for critical flow?

A. ( frac{Q}{g} = frac{A}{T} )
B. ( frac{Q^2}{g} = frac{A^2}{T} )
C. ( frac{Q}{g} = frac{A^3}{T} )
D. ( frac{Q^2}{g} = frac{A^3}{T} )
Answer» E.
Discussion