23 + Mcqs in Geometrical Properties Rectangular Section Page 1 McqOptions

1.	The hydraulic depth of a rectangular channel is 2m and its wetted area is 12m2. Estimate its hydraulic radius.
A.	1.2m
B.	1.3m
C.	1.4m
D.	1.5m
Answer» B. 1.3m

Discussion

2.	Determine the section factor for the channel section having area 20m2.
A.	20m
B.	30m
C.	40m
D.	50m
Answer» C. 40m

Discussion

3.	The depth and widths of a rectangular channel are 4m and 5m respectively. Determine the hydraulic radius of the channel.
A.	4.22m
B.	3.54m
C.	2.22m
D.	1.54m
Answer» E.

Discussion

4.	A rectangular channel has a depth of 5m and width of 12m. Calculate the hydraulic depth of the channel.
A.	5m
B.	6m
C.	7m
D.	8m
Answer» B. 6m

Discussion

5.	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» C. 7.5m

Discussion

6.	Calculate the wetted area for a rectangular channel which is5.2m in width and 3m in depth.
A.	15.6m2
B.	16.6m2
C.	17.6m2
D.	18.6m2
Answer» E.

Discussion

7.	The ratio between depth and width of a rectangular channel is ¼ and the area of the rectangular section is 16m^2. Calculate the top width of the channel.
A.	5m
B.	6m
C.	7m
D.	8m
Answer» E.

Discussion

8.	The section factor of a rectangular channel is 111.80m. The discharge and velocity of water are 250 m3⁄s and 5 m⁄s respectively. Calculate the hydraulic depth of the channel.
A.	2m
B.	3m
C.	4m
D.	5m
Answer» E.

Discussion

9.	The ratio of Hydraulic radius and Hydraulic depth is ½ and the top width of the channel is 6m, calculate the hydraulic depth of the channel.
A.	1m
B.	2m
C.	3m
D.	4m
Answer» D. 4m

Discussion

10.	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» C. 7.5m

Discussion

11.	The depth and widths of a rectangular channel are 4m and 5m respectively. Determine the hydraulic radius of the channel.$
A.	4.22m
B.	3.54m
C.	2.22m
D.	1.54m
Answer» E.

Discussion

12.	A_rectangular_channel_has_a_depth_of_5m_and_width_of_12m._Calculate_the_hydraulic_depth_of_the_channel.$
A.	5m
B.	6m
C.	7m
D.	8m
Answer» B. 6m

Discussion

13.	Let the top width of a rectangular channel be B and the depth be y, determine the hydraulic radius of the channel.
A.	By/ B+2y
B.	By/ B+ y
C.	y
D.	B
Answer» B. By/ B+ y

Discussion

14.	The hydraulic depth of a rectangular channel is 2m and its wetted area is 12m2. Estimate its hydraulic radius.
A.	1.2m
B.	1.3m
C.	1.4m
D.	1.5m
Answer» B. 1.3m

Discussion

15.	The section factor and hydraulic depth for a rectangular channel are 40m and 4m respectively. Determine the top width of the channel.
A.	3m
B.	4m
C.	5m
D.	6m
Answer» D. 6m

Discussion

16.	Determine_the_section_factor_for_the_channel_section_having_area_20m2.
A.	20m
B.	30m
C.	40m
D.	50m
Answer» C. 40m

Discussion

17.	A rectangular channel has depth y and top with B. Determine its section factor.
A.	By<sup>3‚Äö√Ñ√∂‚àö√ñ‚àö√´2</sup>
B.	By<sup>1‚Äö√Ñ√∂‚àö√ñ‚àö√´2</sup>
C.	By
D.	By<sup>2</sup>
Answer» B. By<sup>1‚Äö√Ñ√∂‚àö√ñ‚àö√´2</sup>

Discussion

18.	Which geometric parameter determines the efficiency of the channel?
A.	Hydraulic depth
B.	Hydraulic radius
C.	Section factor
D.	Normal depth
Answer» C. Section factor

Discussion

19.	The ratio between depth and width of a rectangular channel is ¬¨¬®¬¨‚à´ and the area of the rectangular section is 16m^2. Calculate the top width of the channel.$
A.	5m
B.	6m
C.	7m
D.	8m
Answer» E.

Discussion

20.	The section factor of a rectangular channel is 111.80m. The discharge and velocity of water are 250 m3‚Äö√Ñ√∂‚àö√ñ‚àö√´s and 5 m‚Äö√Ñ√∂‚àö√ñ‚àö√´s respectively. Calculate the hydraulic depth of the channel.$
A.	2m
B.	3m
C.	4m
D.	5m
Answer» E.

Discussion

21.	The ratio of Hydraulic radius and Hydraulic depth is ¬¨¬®≈í¬© and the top width of the channel is 6m, calculate the hydraulic depth of the channel.$
A.	1m
B.	2m
C.	3m
D.	4m
Answer» D. 4m

Discussion

22.	Calculate the hydraulic diameter for a rectangular duct having 10m width and 6m depth.
A.	5.5m
B.	6.5m
C.	7.5m
D.	8.5m
Answer» D. 8.5m

Discussion

23.	The discharge and velocity of water in a rectangular channel are 75m^3/s and 5m/ s respectively. The hydraulic depth being 3m calculate the hydraulic radius.
A.	1.36m
B.	1.87m
C.	1.98m
D.	2.0m
Answer» B. 1.87m

Discussion

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