421. In a city the ratio of the drainage to sewage is 20, the percentage discharge passing through non-monsoon periods, is_____________________?
A. 5
B. 10
C. 15
D. 20
✅ The correct answer is option D.
Civil Engineering Mcqs MCQs
422. In a static fluid__________________?
A. resistance to shear stress is small
B. fluid pressure is zero
C. linear deformation is small
D. only normal stresses can exist
✅ The correct answer is option D.
423. Pathogens (or pathogenic bacterias) in water may cause___________________?
A. Typhoid
B. Cholera
C. Dysentery
D. All the above
✅ The correct answer is option D.
424. Which one of the following tests is used for testing sewer pipes ?
A. Water test
B. Ball test
C. Mirror test
D. All of these
✅ The correct answer is option D.
425. Capillary action is due to the__________________?
A. surface tension
B. cohesion of the liquid
C. adhesion of the liquid molecules and the molecules on the surface of a solid
D. all of the above
✅ The correct answer is option D.
426. A sewer running partially full and hurried with back filled, fails in compression due to_________________?
A. Weight of the pipe
B. Weight of the back fill
C. Superimposed traffic loads
D. All the above
✅ The correct answer is option D.
427. The tendency of a liquid surface to contract is due to the following property_________________?
A. cohesion
B. adhesion
C. viscosity
D. surface tension
✅ The correct answer is option D.
428. In order that flow takes place between two points in a pipeline, the differential pressure between thes^ points must be more than_________________?
A. frictional force
B. viscosity
C. surface friction
D. all of the above
✅ The correct answer is option D.
429. If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is___________________?
A. 1045 mm
B. 1065 mm
C. 1075 mm
D. 1095 mm
✅ The correct answer is option D.
430. The pressure exerted by_____________?
A. The sewage when running full from inside, is called internal pressure
B. The internal pressure if any, causes tensile stress in the pipe material
C. Pressure sewers are designed to be safe in tension
D. All the above
✅ The correct answer is option D.