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Question

A pitot-static tube, with a coefficient of 0.98 is used to measure the velocity of water in a pipe. The stagnation pressure recorded is 3m and the static pressure is 0.5 m. What is the velocity of flow?

A
7.2 m/s
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B
6.8 m/s
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C
5.9 m/s
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D
5.2 m/s
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Solution

The correct option is B 6.8 m/s

V=CV2g(ρstagρstatic)

=0.98×2×9.81×(30.5)

= 6.86 m/s


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