Explore topic-wise MCQs in Fluid Mechanics Questions and Answers.

This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

Estimate the type of flow in a channel having cross sectional area of 50m2 and top of the channel is 5m. The mean velocity of flow is 0.1m/s and the absolute viscosity of water is 0.625 N-s/m2.

A. Laminar
B. Turbulent
C. Transition
D. Steady
Answer» D. Steady
2.

Calculate the Froude’s number for a channel having discharge of 261.03m3/s, cross sectional area of 42m2 and the top width being 6m.

A. 0.65
B. 0.72
C. 0.38
D. 0.75
Answer» E.
3.

Estimate the section factor for a channel section having cross sectional area of 40m2 and hydraulic depth of 6m.

A. 94.3
B. 95.6
C. 97.9
D. 100
Answer» D. 100
4.

Calculate the mean hydraulic depth of a channel having top width of 7m and cross sectional area of 35m2.

A. 4m
B. 5m
C. 6m
D. 7m
Answer» C. 6m
5.

Calculate the mean hydraulic radius for a channel having 20m2 cross sectional area and 50m of wetted perimeter.

A. 0.4m
B. 0.5m
C. 0.6m
D. 0.7m
Answer» B. 0.5m
6.

What is the Froude’s number for a channel having mean velocity 4.34 m/s and mean hydraulic depth of 3m?

A. 0.4m
B. 0.6m
C. 0.7m
D. 0.8m
Answer» E.
7.

The Froude’s number for a flow in a channel section is 1. What type of flow is it?

A. Sub Critical
B. Critical
C. Super critical
D. Tranquil
Answer» C. Super critical