Question 1

Drawdown is a hydraulics term that refers to which of the following conditions in a typical sewer?

Accepted Answer

A) Siphoning 
B) The surface curve at a free flowing outlet of a pipe 
C) Draining the line 
D) An area where the flow slows 
A) Siphoning 
B) The surface curve at a free flowing outlet of a pipe 
C) Draining the line 
D) An area where the flow slows B

Question 2

What is the velocity (in ft/sec) in a rectangular concrete channel with a width of 3 feet (ft), a hydraulic grade line slope of 0.002 ft/ft, a flow depth of 1.5 ft and an assumed Manning's coefficient n = 0.014?

Accepted Answer

A) 0.15 ft/sec 
B) 1.50 ft/sec 
C) 3.92 ft/sec 
D) None of the above 
A) 0.15 ft/sec 
B) 1.50 ft/sec 
C) 3.92 ft/sec 
D) None of the above C

Question 3

A hydraulic jump is likely to occur at which of the points in an open channel?

Accepted Answer

A) Velocity of flow suddenly increases 
B) The flow depth is greater than the critical depth 
C) Water moving at a high velocity at shallow depth strikes water with a substantially deeper depth 
D) All of the above 
A) Velocity of flow suddenly increases 
B) The flow depth is greater than the critical depth 
C) Water moving at a high velocity at shallow depth strikes water with a substantially deeper depth 
D) All of the above C

Question 4

The rate of flow through a Parshall flume is determined by the measurement of which of the following?

Accepted Answer

A) Water velocity 
B) Flume configuration 
C) Water depth 
D) Water area 
A) Water velocity 
B) Flume configuration 
C) Water depth 
D) Water area

Question 5

Which of the following fundamental laws of physics does not describe the flow of fluids?

Accepted Answer

A) Conservation of matter (mass) 
B) Conservation of energy 
C) Conservation of electrical charge 
D) Conservation of momentum 
A) Conservation of matter (mass) 
B) Conservation of energy 
C) Conservation of electrical charge 
D) Conservation of momentum

Question 6

Which of the following is a common purpose for installing a stilling basin?

Accepted Answer

A) Energy dissipation 
B) Scour prevention 
C) Channel erosion control 
D) All of the above 
A) Energy dissipation 
B) Scour prevention 
C) Channel erosion control 
D) All of the above

Question 7

When placing a weir in an open channel, the measurement of the head should be taken upstream from the crest. The measurement location should be at least how far away from the weir?

Accepted Answer

A) At the weir crest 
B) Twice the head 
C) Four times the head 
D) Just behind the crest 
A) At the weir crest 
B) Twice the head 
C) Four times the head 
D) Just behind the crest

Question 8

Which of the following statements describes uniform steady flow characteristics?

Accepted Answer

A) Discharge remains the same and the depth does not change 
B) Surface of the water is parallel to the bed of the channel 
C) Velocity of flow can be computed using Manning's equation 
D) All of the above. 
A) Discharge remains the same and the depth does not change 
B) Surface of the water is parallel to the bed of the channel 
C) Velocity of flow can be computed using Manning's equation 
D) All of the above.

Question 9

Which of the following best describes the term "base flood"?

Accepted Answer

A) The elevation of the crest of the base or 100-year flood 
B) The flood having a 1% chance of being equaled or exceeded in any given year 
C) A general and temporary condition of partial or complete inundation of normally dry land areas 
D) A condition of flooding where there is moving water, but no identifiable channel 
A) The elevation of the crest of the base or 100-year flood 
B) The flood having a 1% chance of being equaled or exceeded in any given year 
C) A general and temporary condition of partial or complete inundation of normally dry land areas 
D) A condition of flooding where there is moving water, but no identifiable channel

Question 10

Which of the following materials is not commonly used in the construction of drainage culverts?

Accepted Answer

A) Asbestos cement (A
C)  pipe 
B) Corrugated metal pipe (CMP) 
C) Cast iron and steel pipe 
D) Reinforced concrete 
A) Asbestos cement (A
C)  pipe 
B) Corrugated metal pipe (CMP) 
C) Cast iron and steel pipe 
D) Reinforced concrete

Question 11

For an open channel, the flow may be laminar or turbulent. To determine if open channel flow is laminar, the Reynolds Number, Re, must be which of the following?

Accepted Answer

A) Re  2,000 
D) Re > 4,000 
A) Re  2,000 
D) Re > 4,000

Question 12

Which of the following statements best describes the difference between a floodplain and a floodway?

Accepted Answer

A) A floodplain may span across a vast area while a floodway is generally contained within the channel of a river 
B) A floodplain is generally contained within a specific footage on either side of a stream centerline, while a flood way may span across a vast area 
C) A floodplain is generally contained within the channel of a river while a floodway is generally contained within a specific footage on either side of a stream centerline 
D) There is no difference - they are the same 
A) A floodplain may span across a vast area while a floodway is generally contained within the channel of a river 
B) A floodplain is generally contained within a specific footage on either side of a stream centerline, while a flood way may span across a vast area 
C) A floodplain is generally contained within the channel of a river while a floodway is generally contained within a specific footage on either side of a stream centerline 
D) There is no difference - they are the same

Drawdown is a hydraulics term that refers to which of the following conditions in a typical sewer?

What is the velocity (in ft/sec) in a rectangular concrete channel with a width of 3 feet (ft), a hydraulic grade line slope of 0.002 ft/ft, a flow depth of 1.5 ft and an assumed Manning's coefficient n = 0.014?

A hydraulic jump is likely to occur at which of the points in an open channel?

The rate of flow through a Parshall flume is determined by the measurement of which of the following?

Which of the following fundamental laws of physics does not describe the flow of fluids?

Which of the following is a common purpose for installing a stilling basin?

When placing a weir in an open channel, the measurement of the head should be taken upstream from the crest. The measurement location should be at least how far away from the weir?

Which of the following statements describes uniform steady flow characteristics?

Which of the following best describes the term "base flood"?

Which of the following materials is not commonly used in the construction of drainage culverts?

For an open channel, the flow may be laminar or turbulent. To determine if open channel flow is laminar, the Reynolds Number, Re, must be which of the following?

Which of the following statements best describes the difference between a floodplain and a floodway?

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Exam 7: Hydraulics Open

Drawdown is a hydraulics term that refers to which of the following conditions in a typical sewer?

What is the velocity (in ft/sec) in a rectangular concrete channel with a width of 3 feet (ft), a hydraulic grade line slope of 0.002 ft/ft, a flow depth of 1.5 ft and an assumed Manning's coefficient n = 0.014?

A hydraulic jump is likely to occur at which of the points in an open channel?

The rate of flow through a Parshall flume is determined by the measurement of which of the following?

Which of the following fundamental laws of physics does not describe the flow of fluids?

Which of the following is a common purpose for installing a stilling basin?

When placing a weir in an open channel, the measurement of the head should be taken upstream from the crest. The measurement location should be at least how far away from the weir?

Which of the following statements describes uniform steady flow characteristics?

Which of the following best describes the term "base flood"?

Which of the following materials is not commonly used in the construction of drainage culverts?

For an open channel, the flow may be laminar or turbulent. To determine if open channel flow is laminar, the Reynolds Number, Re, must be which of the following?

Which of the following statements best describes the difference between a floodplain and a floodway?

Earth Retention

Earth Structures

Earthworks

Estimation

Foundations

Hydraulics Closed

Hydrology

Material Mechanics

Material QC

Member Design

Scheduling

Soil and Materials

Soil Mechanics

Struct Loading

Struct Materials

Struct Analysis

Subsurface

Transportation

Waste Water

Water Treatment

Filters