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The hydraulic grade line for flow in a pipe of constant internal diameter ______.
  • a)
    coincides with the physical centreline of the pipe
  • b)
    is always above the centreline of the pipe
  • c)
    is always sloping down in the direction of flow
  • d)
    is always above the total energy grade line
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The hydraulic grade line for flow in a pipe of constant internal diame...
For the pipe of constant diameter, the hydraulic gradient line is always sloping down in the direction of flow and is parallel to total energy line and the difference between both the lines represents velocity head. Due to hf(head loss due to friction) along the length of pipe, H.G.L always sloping down.
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Most Upvoted Answer
The hydraulic grade line for flow in a pipe of constant internal diame...
Hydraulic Grade Line and its Characteristics

The hydraulic grade line (HGL) is a graphical representation of the pressure head and elevation head of a fluid flowing in a pipeline. It is used to determine the energy available to the fluid for performing work.

Characteristics of hydraulic grade line are:

• Slopes Downward: The HGL always slopes downward in the direction of flow, as the pressure head decreases due to friction losses and elevation head increases due to gravity.

• Above the Centreline: The HGL is always above the physical centreline of the pipe, as there is always some energy loss due to friction.

• Above Total Energy Grade Line: The HGL is always above the total energy grade line (TEGL) in a pipeline, as the TEGL takes into account the potential energy of the fluid which is not available for performing work.

• Constant Internal Diameter: The HGL is applicable only for pipes with a constant internal diameter, as the velocity profile is uniform in such pipes.

Conclusion

Thus, the correct answer is option C - The hydraulic grade line for flow in a pipe of constant internal diameter is always sloping down in the direction of flow.
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The hydraulic grade line for flow in a pipe of constant internal diameter ______.a)coincides with the physical centreline of the pipeb)is always above the centreline of the pipec)is always sloping down in the direction of flowd)is always above the total energy grade lineCorrect answer is option 'C'. Can you explain this answer?
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The hydraulic grade line for flow in a pipe of constant internal diameter ______.a)coincides with the physical centreline of the pipeb)is always above the centreline of the pipec)is always sloping down in the direction of flowd)is always above the total energy grade lineCorrect answer is option 'C'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about The hydraulic grade line for flow in a pipe of constant internal diameter ______.a)coincides with the physical centreline of the pipeb)is always above the centreline of the pipec)is always sloping down in the direction of flowd)is always above the total energy grade lineCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The hydraulic grade line for flow in a pipe of constant internal diameter ______.a)coincides with the physical centreline of the pipeb)is always above the centreline of the pipec)is always sloping down in the direction of flowd)is always above the total energy grade lineCorrect answer is option 'C'. Can you explain this answer?.
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