Civil Engineering - GATE Exam Questions - Discussion
Discussion Forum : GATE Exam Questions - Section 4 (Q.No. 1)
1.
At the same mean velocity, the ratio of head loss per unit length for a sewer pipe flowing full to that for the same pipe flowing half full would be :
Discussion:
16 comments Page 1 of 2.
Abhishek thakur said:
2 years ago
@Deepakbaswal.
Yes, you are right. Thanks.
Yes, you are right. Thanks.
Abhishek thakur said:
2 years ago
@Deepakbaswal.
Yes, you are right. Thanks.
Yes, you are right. Thanks.
Chiku said:
2 years ago
h = flv^2 / 2gD, as for both case, all the factor is same, so the ratio for the head loss will be 1.
Gumin said:
2 years ago
hl = fL(16Q^2)/2g(3.14^2)Xd^5 in terms of discharge.
for half flow it will be 8Q^2,
So, it will be 16/8 =2,
A is the correct answer.
for half flow it will be 8Q^2,
So, it will be 16/8 =2,
A is the correct answer.
Bisy said:
2 years ago
Here 0.81/0.50 = 1.63.
Bhutan said:
4 years ago
Head loss per unit length is independent of sewer running full or half full condition
Keshav Kaushik said:
4 years ago
Head Loss per unit length is independent of sewer running in full or half full condition.
Utsav said:
4 years ago
Head loss due to friction/unit length of pipe is proportional to mean velocity square V^2 and inversely proportional to diameter D of the pipe.
V = volumetric flow rate remains same.
So, head loss due to friction: ratio when flowing full/when flowing half full = 1.
V = volumetric flow rate remains same.
So, head loss due to friction: ratio when flowing full/when flowing half full = 1.
Dolly said:
5 years ago
C must be the correct answer.
Naina paliwal said:
5 years ago
Please explain the solution with the correct formula.
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