The head loss due to sudden expansion is__________________?
Correct answer: B. (V1 - V2)2/2gc
- A. (V12 - V22)/2gc
- B. (V1 - V2)2/2gc
- C. (V1 - V2)/2gc
- D. (V12 - V22)/gc
Explanation
A sudden expansion produces an irreversible loss due to eddies and mixing, given by hL = (V1 − V2)^2/(2gc) in the stated notation. It depends on the square of the velocity difference, not the difference of velocity squares.
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