Home» Online Test » Civil Engineering » Water Supply & Sanitation Engineering Online Test » Paper 1 » Paper 2 » Paper 3 0% Sorry, time's up. To complete the online test, please restart it. Created by Vikash chaudhary This is a FREE online test. Beware of scammers who ask for money to attend this test. Get New Questions in Each Attempt Total Questions: 30 Time Allotted: 30 minutes Passing Score: 50% Randomization: Yes Certificate: No Do not refresh the page! 👍 All the best! 1 / 30 1. The maximum amount of copper in domestic water should be a) up to 3 ppm b) up to 15 ppm c) up to 45 ppm d) all of the above 2 / 30 2. Decrease in per capita consumption occurs by a) use of a metering system b) hot climate c) good-quality water is supplied d) all of the above 3 / 30 3. Which is in the correct order? a) house s.-Lateral s.-Branch s.-Sub-main s.-Main (Trunk)-outfall sewer b) house s.-Lateral s.-Branch s.-Sub-main s.-Outfall s.-Main (Trunk) sewer c) main (Trunk)-Outfall s.-House s.-Lateral s.-Branch s.-Sub-main sewer d) lateral s.-Branch s.-Sub-main s.-Main (Trunk)-Outfall s-House sewer 4 / 30 4. Septic tank is provided for: a) To eliminate the sewer system b) Tank for sedimentation cum disposal under aerobic conditions c) Oxygen-free sedimentation cum disposal under anaerobic conditions d) None of the above 5 / 30 5. An egg-shaped section of sewer: a) is economical than a circular section b) is more stable than a circular section c) provides self-cleansing velocity at low discharge d) all of the above 6 / 30 6. A G.I. pipe has a coating of a) zinc b) lead c) silver d) aluminum 7 / 30 7. Alum increases a) hardness of water b) carbonate of water c) sulphate of water d) acidity of water 8 / 30 8. The type of joint generally used in cast-iron pipes is a) flanged joint b) socket and spigot joint c) dresser coupling joint d) all of the above 9 / 30 9. The sewer meant to carry excess discharge from an existing sewer is called: a) main sewer b) trunk sewer c) outfall sewer d) relief sewer 10 / 30 10. In water analysis, the test carried out is a) physical b) chemical c) biological d) all of the above 11 / 30 11. The ratio of maximum to average sewage flow for mains up to 1 m in diameter is usually: a) 1.0 b) 1.2 c) 1.5 d) 2.0 12 / 30 12. Normally the shape of the demand line is a) straight b) curved c) both of the above d) none of the above 13 / 30 13. The water supply demand in a day school without a boarder should be a) 10 lpcd b) 20 lpcd c) 30 lpcd d) 40 lpcd 14 / 30 14. A manhole of such depth that an access shaft is required in addition to the working chamber, is called.....: a) shallow manhole b) medium manhole c) deep manhole d) none of the above 15 / 30 15. It is practical to design sewer for the self-cleaning velocity at: a) Ultimate peak flow b) Maximum flow c) Minimum flow d) Extra flow 16 / 30 16. The types of sewer suitable for a separate system where discharge is uniform are: a) egg-shaped b) horse-shoe c) circular d) elliptical 17 / 30 17. In Chezy's formula v=c√ms for calculating the velocity of flow in a circular sewer, the Chezy's constant c depends upon: a) size of the sewer b) shape of the sewer c) roughness of the sewer d) all of the above 18 / 30 18. The factor to be considered for the source of water supply is: a) quantity and quality of available water b) elevation of the sources of water c) general terrain intervening the area d) all of the above 19 / 30 19. If P is the total internal pressure, d is the diameter of the pressure conduit, and t is the thickness of the conduit, the hoop's stress is a) d.p / 2t b) d.p / t c) d.t / 2p d) d.t / p 20 / 30 20. The distribution mains in a water supply system are designed for a) maximum daily demand b) peak hourly demand c) average daily demand d) maximum hourly demand on the maximum consumption day 21 / 30 21. When the fall in elevation is greater than 60cm, the manhole provided is called: a) lamp hole b) flight manhole c) drop manhole d) fall manhole 22 / 30 22. In distribution pipes, drain valves are provided at a) lower point b) higher point c) junction points d) anywhere 23 / 30 23. A structure constructed where self-cleaning velocity is not developed to prevent choking is called: a) catch basin b) flushing tank c) manhole d) inverted siphon 24 / 30 24. Which traps have perpendicular legs? a) P-Trap b) Q-Trap c) gully trap d) S-Trap 25 / 30 25. A source of colour in water is due to a) silt b) clay c) organic debris d) inorganic inert matter 26 / 30 26. The capacity of a flushing cistern for water closets is: a) 1-2 liters b) 10-15 liters c) 5 liters d) 20-25 liters 27 / 30 27. The capacity of Guheswari STP is: a) 15.4 Mld b) 1.1 Mld c) 0.50 Mld d) 12.1 Mld 28 / 30 28. For a 150mm diameter sewer, the gradient required to generate self-cleaning velocity is: a) 1 in 10 b) 1 in 100 c) 1 in 200 d) 1 in 300 29 / 30 29. Grit is: a) inert matter of specific gravity > 2.65 b) organic matter of specific gravity nearer to 1 c) organic and inert matter combined d) colloidal matter of heavy specific gravity 30 / 30 30. The slope of the hydraulic grade line is always towards the well due to pumping. This line of depressed water table is called a) drawdown curve b) circle of influence c) dynamic gradient d) an inverted cone of depression Your score is Share your achievement! LinkedIn Facebook Twitter 0% Restart Test Please provide your feedback. Thank you for your valuable feedback. Send feedback Buy Water Supply & Sanitation Engineering MCQ PDF for Offline Study
