Fluid Mechanics & Hydraulics (3140611) MCQs

MCQs of Open Channel Flow

Showing 1 to 10 out of 20 Questions
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1.
The flow characteristics of a channel do not change with time at any point. What type of flow is it?
(a) Steady flow
(b) Uniform flow
(c) Laminar flow
(d) Turbulent flow
Answer:

Option (a)

2.
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) Laminar
Answer:

Option (b)

3.
Calculate the aspect ratio having channel width of 6m and depth of 8m.
(a) 0.75m
(b) 1.33m
(c) 1.50m
(d) 1.68m
Answer:

Option (b)

4.
Calculate the mean hydraulic radius for a channel having 20 m2 cross sectional area and 50m of the wetted perimeter.
(a) 0.4m
(b) 0.5m
(c) 0.6m
(d) 0.7m
Answer:

Option (a)

5.
The section factor of a rectangular channel is 111.80m. The discharge and velocity of water are 250 m3s and 5 ms respectively. Calculate the hydraulic depth of the channel.
(a) 2m
(b) 3m
(c) 4m
(d) 5m
Answer:

Option (d)

6.
Which geometric parameter determines the efficiency of the channel?
(a) Hydraulic depth
(b) Hydraulic radius
(c) Section factor
(d) Normal depth
Answer:

Option (b)

7.
Calculate the wetted perimeter for a rectangular channel having top width of 4.5m and depth of 3m.
(a) 12m
(b) 10.5m
(c) 7.5m
(d) 15m
Answer:

Option (b)

8.
A rectangular channel has a depth of 5m and width of 12m. Calculate the hydraulic depth of the channel.
(a) 5m
(b) 5.5m
(c) 6m
(d) 8m
Answer:

Option (a)

9.
What is the wetted area for a triangular channel having depth y and the side slope being Z?
(a) zy2
(b) 2zy
(c) zy
(d) none of the above
Answer:

Option (a)

10.
Determine the hydraulic depth of a triangular channel having the side slope Z and depth y.
(a) y
(b) y2
(c) 2y
(d) y2
Answer:

Option (b)

Showing 1 to 10 out of 20 Questions
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