Civil Engineering - Hydraulics - Discussion

Discussion Forum : Hydraulics - Section 1 (Q.No. 4)
4.
The maximum vacuum created at the summit of a syphon is
2.7 m of water
7.4 m of water
5.5 m of water
none.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
25 comments Page 1 of 3.

Knreddy said:   1 decade ago
Summit of syphon means what?

Gopi said:   1 decade ago
It is the highest point hill is called summit syphon is bend pipe. It is flowing of water to higher elevation to lower elevation.

Pratik said:   1 decade ago
The answer should be A because vapour pressure head of water is 2.7 m of water.

Md sharique said:   10 years ago
It is the highest point hill is called summit syphon is bend pipe. It is flowing of water to higher elevation to lower elevation.

Ravi said:   9 years ago
@Pratik.

Your answer will satisfy the Condition of cavities. B answer is right.

Krishna said:   9 years ago
I think 7.6 m of water.

Pravin Kamble said:   9 years ago
According to me, 2.7 is the correct answer.

Suryan said:   9 years ago
It should be 7.8m water.

Vivek said:   8 years ago
It should be less than 7.8 because if it goes above 7.8 dissolved gases in the liquid will come out and accumulated at a summit and will stop flow of water.

Abhishek Anand said:   8 years ago
The pressure at summit point will be less than the atmospheric pressure . Theoretically, the pressure at summit may be reduced to 10.3 m of water but in actual practice, this pressure is only 7.6 m of water or 10.3-7.6= 2.7m of water absolute. if the pressure at summit become less than 2.1m of water absolute, the dissolved air and other gases would come out from water and collect at the summit.the flow of water will be obstructed.


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