HGE

Question 1

A type of flow where at any instant the amount of fluid particles passing through a pipe section is constant

A. Laminar
B. Continuous
C. Uniform
D. Steady

Answer 1

Steady

Question 2

Laminar flow is also called as what?

Answer 2

Streamline flow

Question 3

What is a type of fluid (gas or liquid) flow in which the fluid travels smoothly in regular paths, in contrast to turbulent flow, in which the fluid undergoes irregular fluctuations and mixing?

Answer 3

Laminar flow

Question 4

What is a fluid flow in which characteristics and parameters remain unchanged with distance along the flow path?

Answer 4

Uniform flow

Question 5

What is a steady flow through a long straight pipe of a constant diameter?

Answer 5

Uniform flow

Question 6

What is the kinetic energy of a unit weight of fluid?

Answer 6

Velocity head

Question 7

What are particles with a diameter larger than 75 mm?

Answer 7

Cobbles

Question 8

What are the particles with sizes from 4.75 - 75 mm?

Answer 8

Gravel

Question 9

What are particles with sizes from 0.075 - 4.75 mm?

Answer 9

Sand

Question 10

What are particles that are smaller than 0.075 mm (silt and clay)?

Answer 10

Fines

Question 11

A pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly (momentum change) is referred to in hydraulics as

A. Water hammer
B. Hydraulic jump
C. Potential head
D. Hydrodynamics

Answer 11

Water hammer

Question 12

What occurs when the momentum of the fluid in a pipeline is abruptly changed, either by a rapid valve closure or by a pump starting or stopping suddenly?

Answer 12

Water hammer

Question 13

A line joining the points of highest elevation of water in series of vertical open pipes rising from a pipeline in which water flows under pressure is referred to as

A. Energy grade line
B. Hydraulic loss
C. Hydraulic head
D. Hydraulic grade line

Answer 13

Hydraulic grade line (HGL)

Question 14

What represents the total potential energy in the flowing water at each point along the pipeline?

Answer 14

Hydraulic grade line (HGL)

Question 15

If the ground water table in a soil formation rises as a resulting of flooding, the bearing capacity of the soil

A. Depends on the footing load
B. Unaffected
C. Decreases
D. Increases

Answer 15

Decreases

When ground water table rises, it saturates the soil and increases the pore water pressure within the soil. This increase in pore water pressure reduces the effective stress and shear strength of the soil. As a result, the bearing capacity of the soil decreases

Question 16

One of the following foundation conditions does not affect the bearing capacity of the supporting soil

A. Unit weight of the soil
B. Load imposed onto the soil
C. Position of ground water table
D. Depth of founding of footings

Answer 16

Load imposed onto the soil

The bearing capacity of soil is a function of the following:
1. Cohesion of soil
2. Unit weight of soil
3. Size of footing
4. Depth of footing
5. Position of ground water table