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Head loss due to an obstruction in a pipe: validate the given relation Statement: “The loss of head due to an obstruction in a pipe is twice the loss of head at its entrance.” Decide whether the statement is correct.

Difficulty: Medium

Agree
Disagree

Correct Answer: Disagree

Explanation:

Concept/Approach

Entrance loss for a sharp-edged entrance is commonly taken as K_e = 0.5, giving h_e = 0.5 × (v² / 2g). Loss due to an obstruction depends on its geometry and blockage ratio; its coefficient is not universally a fixed multiple of the entrance loss.

Final Answer
Disagree

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