Wide Rectangular Channels MCQs : This section focuses on the "Wide Rectangular Channels". These Multiple Choice Questions (MCQs) should be practiced to improve the Wide Rectangular Channels skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
Calculate the critical depth of a wide rectangular channel section if the normal depth and yn are 3.2m and 2.5m respectively. Given: dy/dx=3Ã10-4 m and S0=1/2000.
A. 0.29m
B. 1.29m
C. 2.29m
D. 3.29m
Question 2
Calculate the rate of change of depth of a wide rectangular channel having uniform flow depth of 2m and the depth during GVF is 1.5m. Given:yc=1m, S0=1 in 1500.
A. 1.4Ã10-4m
B. 2.4Ã10-4m
C. 3.4Ã10-4m
D. 4.4Ã10-4m
Question 3
For a wide rectangular channel y>>B.
A. TRUE
B. FALSE
Question 4
If dy/dx=3Ã10-4 m and the ratio of bed slope and slope of energy line is 0.7, calculate the value of slope of energy line if the uniform flow depth is 1.6m, critical depth is 1.2m.
A. 5.25Ã10-4
B. 6.25Ã10-4
C. 7.2510-4
D. 8.25Ã10-4
Question 5
If the ratio of GVF depth to normal depth and the ratio of critical depth to normal are equal to 0.5, calculate the rate of change of depth if the bed slope of the channel is 1 in 1300.
A. 5.96Ã-4m
B. 6.96Ã-4m
C. 7.96Ã-4m
D. 8.96Ã-4m
Question 6
If the velocity of flow through a wide rectangular channel is 2m⁄s and the rate of change of depth is 3×10-5m, calculate the manning’s constant of the channel if the uniform flow depth is 1m and yn=0.6m. Given: Critical depth = 0.5m.
A. 0.38×10-3
B. 1.38×10-3
C. 2.38×10-3
D. 3.38×10-3
Question 7
If y = 2m and velocity of flow is 2.5mâs, calculate the critical depth.
A. 0.36m
B. 1.36m
C. 2.36m
D. 3.36m
Question 8
The slope of the energy line of a wide rectangular channel is 4×10-5 and the bed slope of the channel is 1 in 1200 using manning’s equation, calculate the depth in GVF if the uniform depth of flow is 1.5m.
A. 0.5m
B. 0.6m
C. 0.7m
D. 0.8m
Question 9
The value of slope of energy line of a wide rectangular channel is 3×10-4 and the bed slope of the channel is 1 in 1500 using chezy’s equation, calculate the uniform flow depth if the depth during GVF is 2m.
A. 1.61m
B. 2.61m
C. 3.61m
D. 4.61m
Question 10
What is the hydraulic radius for a wide rectangular channel section?
A. 3y
B. 2y
C. y
D. y/2
Question 11
Calculate the critical depth of a wide rectangular channel section if the normal depth and yn are 3.2m and 2.5m respectively. Given: dy/dx=3×10-4 m and S0=1/2000.
A. 0.29m
B. 1.29m
C. 2.29m
D. 3.29m
Question 12
Calculate the rate of change of depth of a wide rectangular channel having uniform flow depth of 2m and the depth during GVF is 1.5m. Given:yc=1m, S0=1 in 1500.
A. 1.4×10-4m
B. 2.4×10-4m
C. 3.4×10-4m
D. 4.4×10-4m
Question 13
If dy/dx=3×10-4 m and the ratio of bed slope and slope of energy line is 0.7, calculate the value of slope of energy line if the uniform flow depth is 1.6m, critical depth is 1.2m.
A. 5.25×10-4
B. 6.25×10-4
C. 7.2510-4
D. 8.25×10-4
Question 14
If the ratio of GVF depth to normal depth and the ratio of critical depth to normal are equal to 0.5, calculate the rate of change of depth if the bed slope of the channel is 1 in 1300.
A. 5.96×-4m
B. 6.96×-4m
C. 7.96×-4m
D. 8.96×-4m
Question 15
If the velocity of flow through a wide rectangular channel is 2m⁄s and the rate of change of depth is 3×10-5m, calculate the manning’s constant of the channel if the uniform flow depth is 1m and yn=0.6m. Given: Critical depth = 0.5m.
A. 0.38×10-3
B. 1.38×10-3
C. 2.38×10-3
D. 3.38×10-3
Question 16
If y = 2m and velocity of flow is 2.5m⁄s, calculate the critical depth.
A. 0.36m
B. 1.36m
C. 2.36m
D. 3.36m