Civil Engineering - UPSC Civil Service Exam Questions - Discussion


A pipeline of 5 cm diameter is reduced abruptly to 2.5 cm diameter at a section to enable measurement of the water flowing through it. The loss of head at the contraction is 0.5 m. Given that, in metric units, 2g = 4.43 and g = 3.132, the mean velocity in the reduced section will be

[A]. 0.5 m/sec
[B]. 1.1075 m/sec
[C]. 1.566 m/sec
[D]. 4.43 m/sec

Answer: Option D


No answer description available for this question.

M.Akila said: (Aug 12, 2018)  
Please give the description of the answer.

Umesh H A said: (Sep 6, 2018)  
Head loss due to contraction is;

Head loss = (0.5 * V2 square)/2g.

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