Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 11 (Q.No. 10)
10.
Two small orifices A and B of diameters 1 cm and 2 cm, respectively, are placed on the sides of a tank at depths of h1 and h2 below the open liquid surface. If the discharges through A and B are equal, then the ratio of h1 and h2 (assuming equal Cd values) will be
16 : 1
8 : 1
4 : 1
2 : 1
Answer: Option
Explanation:
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Discussion:
2 comments Page 1 of 1.

Rahul verma said:   2 years ago
Continuity equation A1V1=A2V2.

V1/V2=√2gh1/√2gh2.

4V2/V2=√h1/h2.

16/1 = h1/h2.
(1)

Umesh H A said:   6 years ago
Since discharge remains constant.

Q1 = Q2,
A1 v1 = A2 V2,
Substitute the equation.
A1/A2 = (√h2/√h1).

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