The contraction co-efficient for Borda's mouthpiece (for frictionless fluid) is__________________?
Correct answer: B. 0.5
- A. 0.1
- B. 0.5
- C. 0.94
- D. 1
Explanation
For a Borda mouthpiece, the jet contracts to approximately half the mouthpiece area at the vena contracta under the idealized frictionless assumption. Consequently, the contraction coefficient is about 0.5.
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