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Civil Engineering - UPSC Civil Service Exam Questions

Exercise : UPSC Civil Service Exam Questions - Section 20
11.
What is the BOD5 at 20°C of a waste that yields an oxygen consumption of 2 mg/l from a 0.5% diluted sample ?
50 mg/l
400 mg/l
200 mgl
250 mgl
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
The given figure shows roughly, the daily mass curves of supply to and demand from an elevated service reservoir (ESR). The minimum required capacity of the reservoir is given by
(A - B)
(A + B)
A x B
larger of A or B
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Stresses obtained from Boussinesq's theory are considered reasonably satisfactory in foundation engineering because:
they represent stress distribution in homogeneous soil below loaded area
they account for anisotropy of soil properly
they give due regard to plastic behaviour of soils, particularly of settlement analysis
they consider elastic soil medium, and the intensity of allowable stresses below foundations in most cases are quit small and justify elastic solutions
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
A septic tank of 7 m3 in volume serves for 5 people. If the rate of accumulation of sludge is 70 litres per capita per year and sludge is removed when it occupies 50% of its volume, what is the cleaning interval of septic tank ?
3 years
5 years
7.5 years
10 years
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
The load carrying capacity of an individual friction pile is 200 kN. What is the total load carrying capacity of a group of 9 such piles with group efficiency factor of 0.8 ?
1800 kN
1640 kN
1440 kN
900 kN
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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