1) If the velocity in a rectangular channel (V) is 1.35 m/s and the water depth (d) is 0.3m, (g-9.81 m/s) then: A. Froude number = 0.787 and the flow is subcritical B. Froude number 2 and the flow is critical C. Froude number = 1.7 and the flow is super critical super D. Froude number can't be calculated because channel width is unknown. E. None of the choices.
1) If the velocity in a rectangular channel (V) is 1.35 m/s and the water depth (d) is 0.3m, (g-9.81 m/s) then: A. Froude number = 0.787 and the flow is subcritical B. Froude number 2 and the flow is critical C. Froude number = 1.7 and the flow is super critical super D. Froude number can't be calculated because channel width is unknown. E. None of the choices.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
![gii It.
Question 4: Answer the Following Multiple Choice Questions:
Grade
8
1) If the velocity in a rectangular channel (V) is 1.35 m/s and the water depth (d) is 0.3m, (g-9.81
m/s) then:
A. Froude number 0.787 and the flow is subcritical
B. Froude number = 2 and the flow is super critical
C. Froude number = 1.7 and the flow is super critical
D. Froude number can't be calculated because channel width is unknown.
E. None of the choices.
2) The following data was recorded from viscosity experiment: The recorded distance of falling
ball = 100 cm and time = 1.08 s. The density of oil (pL) = 826 kg/m' and the density of steel (ps)
= 7810 kg/m', kinematic viscosity (v) = 0.000124 m/s, g-9.81 m/s. The dynamic viscosity for
the oil:
A. 0.175 kPa.s
B. 0.175 Pa.s
C. 0.102 kPa.s
D. 0.102 Pa.s
E. None of the choices
3) A pipe of 5 cm diameter conveys water flow of 0.2 m/s velocity, what is the mass flow rate (m")
in (kg/s). The density of water pw 1000 kg/m.
А. 3.9
В. 0.98
С. 0.39
D. 14.1
E. 9.8
F. None of the choices
4) Weirs can be:
A. Broad-crested.
ype here to search](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F44a1ffe2-4d99-46b9-b189-9264d98dfd46%2Ff6f78055-dfe9-473d-95d6-0afa7565b331%2Fzg76gvi_processed.jpeg&w=3840&q=75)
Transcribed Image Text:gii It.
Question 4: Answer the Following Multiple Choice Questions:
Grade
8
1) If the velocity in a rectangular channel (V) is 1.35 m/s and the water depth (d) is 0.3m, (g-9.81
m/s) then:
A. Froude number 0.787 and the flow is subcritical
B. Froude number = 2 and the flow is super critical
C. Froude number = 1.7 and the flow is super critical
D. Froude number can't be calculated because channel width is unknown.
E. None of the choices.
2) The following data was recorded from viscosity experiment: The recorded distance of falling
ball = 100 cm and time = 1.08 s. The density of oil (pL) = 826 kg/m' and the density of steel (ps)
= 7810 kg/m', kinematic viscosity (v) = 0.000124 m/s, g-9.81 m/s. The dynamic viscosity for
the oil:
A. 0.175 kPa.s
B. 0.175 Pa.s
C. 0.102 kPa.s
D. 0.102 Pa.s
E. None of the choices
3) A pipe of 5 cm diameter conveys water flow of 0.2 m/s velocity, what is the mass flow rate (m")
in (kg/s). The density of water pw 1000 kg/m.
А. 3.9
В. 0.98
С. 0.39
D. 14.1
E. 9.8
F. None of the choices
4) Weirs can be:
A. Broad-crested.
ype here to search
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