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Test: Design of Sewer- 1 - Civil Engineering (CE) MCQ


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10 Questions MCQ Test - Test: Design of Sewer- 1

Test: Design of Sewer- 1 for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Test: Design of Sewer- 1 questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Design of Sewer- 1 MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Design of Sewer- 1 below.
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Test: Design of Sewer- 1 - Question 1

Which of the following is incorrect regarding circular sewer?

Detailed Solution for Test: Design of Sewer- 1 - Question 1

The circular section has uniform curvature, so it offers less opportunities for deposits.

Test: Design of Sewer- 1 - Question 2

A circular section of sewer gives _______ area for a given perimeter.

Detailed Solution for Test: Design of Sewer- 1 - Question 2

A circular section of sewer gives a maximum area for a given perimeter and gives the greatest hydraulic mean depth when running full or half.

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Test: Design of Sewer- 1 - Question 3

What is the wetted perimeter of a circular section of sewer?

Detailed Solution for Test: Design of Sewer- 1 - Question 3

The wetted perimeter of a circular section of sewer running full is (22/7) *D where D is the internal diameter of circular sewer.

Test: Design of Sewer- 1 - Question 4

The hydraulic mean depth of a circular section running full is __________

Detailed Solution for Test: Design of Sewer- 1 - Question 4

The hydraulic mean depth, R = Area of cross section / Wetted perimeter
= ((22/7) *D2/4) / (22/7) *D
= D/4.

Test: Design of Sewer- 1 - Question 5

The proportional depth of a circular sewer running partially half is __________

Detailed Solution for Test: Design of Sewer- 1 - Question 5

Depth of flow d = (D/2) * (1-cosK/2)
Proportional depth = Depth of flow d / Diameter of section D = (D/2) * (1-cosK/2) / D
= (1/2) * (1-cosK/2).

Test: Design of Sewer- 1 - Question 6

The proportional perimeter of a circular sewer running partially half where K is the central angle subtended at a circular section of sewer is __________

Detailed Solution for Test: Design of Sewer- 1 - Question 6

 Proportional perimeter of a circular sewer running partially half =
(22/7) *D*K/360o / ((22/7) *D) = K/360o.

Test: Design of Sewer- 1 - Question 7

The diameter of the circular sewer is 0.2m. The desired depth of flow is __________

Detailed Solution for Test: Design of Sewer- 1 - Question 7

When the diameter of the sewer is up to 0.4m, they are designed to flow at 1/2 depth.

Test: Design of Sewer- 1 - Question 8

The diameter of a circular sewer is 0.8m. The desired depth of flow is __________

Detailed Solution for Test: Design of Sewer- 1 - Question 8

When the diameter of the sewer is between 0.4m and 0.8m, they are designed to flow at 2/3 depth.

Test: Design of Sewer- 1 - Question 9

A circular sewer having 0.4m diameter is flowing with velocity 2m/Sec. If the gradient of sewer is 1 in 90. Find the value of Chezy’s coefficient?

Detailed Solution for Test: Design of Sewer- 1 - Question 9

Hydraulic mean depth, R = D/4 = 0.4/4 = 0.1m
Slope of sewer S = 1/100, velocity V = 1m/Sec
According to Chezy’s formula, V = C (RS) 1/2 = C* (0.1/90) 1/2 = C/30
C = V*30 = 2*30 = 60.

Test: Design of Sewer- 1 - Question 10

The process that involves connecting pipelines and sewer appurtenances to transport waste to sewage treatment centres is called?

Detailed Solution for Test: Design of Sewer- 1 - Question 10

Sewers are the pipelines to carry sanitary sewage and storm water to treatment plants or centres. The process of connecting pipelines and sewer appurtenances to transport waste to sewage treatment plants is called sewage construction.

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