ASSISTANT-ENGINEER---DIRECTBY-TRANSFER---WATER-AUTHORITY Related Question Answers
1. A triangle lamina having a base 1 m and height 1.5 in is placed vertically under water with the base parallel to the water surface and the base below 3 m of water. The total force exerted on one face is :
2. .IF the velocity potential function is given by φ = 3x-4y, find the magnitude and direction of velocity at any point:
4. An offset is laid out 2° from its true direction on the field. If the scale of plotting is 10 m to 1 cm, find the maximum length of the offset so that the displacement of the point on the paper may not exceed 0.25 mm?
5. The following perpendicular offsets were taken at 10 m intervals from a survey line to an irregular boundary line:3.25, 5.6, 4.2, 6.65, 8.75, 6.2, 3.25,4.2, 5.65/ Calculate the area by trapezoidal rule
6. A square footing 2.5 m x 2.5 m is built in a homogeneous bed of sand of unit weight 20 kN/m3 and having an angle of shearing resistance of 36°. The depth of the base of the footing is 1.5 m below the ground surface. Calculate the safe load that can be carried by a footing with a factor of safety 3 against complete shear failure?Bearing capacity factors Nc =G5.4, Nq =49.4 and Nr =54.0
8. How much initial slump is required for a concrete mix to be fluidised by plasticizers or super plasticizers?
9. .ISO: 800-2007 limits the values of width-.thickness ratios of the elements of a steel section to place a check on :
10. The shape factor of a square of side ‘a’ with its diagonal parallel to the ZZ axis is :(The shape factor of a square of side ‘a’ with its diagonal parallel to the ZZ axis is : 2 1.7 2.343 2V2 )
11. Minimum grade of concrete mix used for water retaining structures with alternate wetting and drying:
12. .A hook 12 mm diameter is embedded in concrete for a distance of 100 mm. Calculate the maximum load which the hook can carry if the bond stress is not to exceed 1.28 N/mm2 :
13. Year’s purchase for an old building if its future life is 15 years and the rate of interest is 7% on capital and 4% for sinking fund :
14. A three hinged arch of span 20 m and rise 4 m carries a uniformly distributed load of 25 kN/m. Horizontal thrust is :
15. Find the shortest length L for a pin ended steel column having a cross • section of 60 mm x 100 mm for which Euler’s formula applies. Take Es = 2x 105N/mm2 and critical proportional limit is 250 N/mm2:
16. Which method of analysis of water distribution system is most suitable for long and narrow pipe system?
17. For disinfecting water supply, it is required to treat 5,00,000 litres of daily supply with 0.5 ppm of chlorine. If the disinfectant is available in i he form of bleaching powder containing 30% of available chlorine, the amount of bleaching powder required to treat the daily flow of water is:
18. .In water treatment settling unit, water having a temperature of 20 Degree Centigrade carries solid particles with average diameter of 0.05 mm and specific gravity 1.20. Given y = 1.01 centi stokes. Settling velocity of sottling particles is :
19. A main sewer is to be designed to receive a flow' from 1 km2 area of a community where the population density is 200 persons/ha. The average sewage flow is 150 litres per capita per day. Assume peak factor =‘,3. The design flow for the main sewer is :
21. The minimum dissolved oxygen which should always be present in water in order to save aquatic life is :
25. Estimated the quantity of secondary sludge produced by a secondary settling tank treating sewage discharge of 3.5 mid. The sludge may be assumed to have a solid concentration of 200 mg/1, removal efficiency of suspended solids as 90% and the solid content of the sludge as 6 per cent:
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