876. The following are the sewage treatment processes :
1. Primary sedimentation
2. Screening
3. Grit removal
4. Secondary sedimentation.
When only preliminary treatment is to be given for sewage, select the required treatment proceses including their correct sequence from the codes given below:
877. Consider the AoA network of a project shown in the given figure. (Activities are designated by alphabets and durations are shown around the stem of the arrow.) The critical path will be
878. Consider the following statements regarding the working stress design of under-reinforced RC sections:
1. The neutral axis depth will be greater than that of a balanced section
2. The stress in steel in tension will reach its maximum permissible value first
3. The moment of resistance will be less than that of the balanced section
4. The concrete on'the tension side is also to be considered for calculating the moment of resistance of the section.
Of these statement :
879. The force in member FD in the given figure is
880. The ratio of the flexural strengths to two beams of square c. oss-section, the first beam being placed with its top and bottom sides horizontally and the second beam being placed with one diagonal horizontally, is
881. The standard plasticity chart to classify fine grained soils is shown in the given figure. The area marked 'X' represents
882. Which one of the following statements is correct ? In the lime-soda process of water softening
883. In standard penetration test, the splitspoon sampler is penetrated into the soil stratum by giving blows from a drop weight whose weight (in kg) and free fall (in cm) are, respectively,
884. The following data pertain to a waste-water sample :
Initial D.O. = 8 mg/l
Final D.O. = 2 mg/l
Dilution = 1%.
The B.O.D. of the given wastewater sample is
885. If p is the specific gravity of the material used in the design of a masonry dam of triangular section, then the ratio between the height and base width of the dam for structural safety and stability is equal to
886. Consider the following statements relating to the stability of floating as well as submerged bodies :
1. A submerged body is stable when the centre of gravity is below the centre of buoyancy.
2. A floating body is stable when the centre of gravity is above the centre of buoyancy.
3. A floating body is stable when the centre of gravity is below the metacentre.
4. A submerged body is in stable equilibrium when the centre of gravity coincides with the centre of buoyancy.
Of these statements :
887. A vehcile was stopped in two seconds by fully jamming the brakes. The skid marks measured 9.8 metre's. The average skid resistance coefficient will be
888. Consider the following statements pertaining to intermediate stiffeners :
1. Stiffeners are provided to exclusively bear concentrated loads.
2. Stiffeners should bear tightly against top and bottom flanges.
3. Maximum spacing of stiffeners is restricted 180 t, where t is the thickness of web.
Which of the statements given above is are/correct ?
889. A brick masonry wall of nominal thickness 200 mm carries an axial load of 26 kN/m and another load of 19 kN/m acting at an eccentricity of 45 mm. The resultant eccentricity and eccentricity ratio are respectively
890. What is the correct sequence of formation of the following compounds during chlorination of water in which ammonia is present ?
1. NCl3
2. NH2Cl
3. NHCl2
Select the correct answer using the codes given below:
891. In a project logic, four activities M, N, O and P are required to be completed before starting activity Q. If the finish times of M, N, O and P are 12 days, 14 days, 15 days and 17 days respectively, the earliest event occurrence time for the activity Q is
892. A square column section of size 350 mm is 350 mm is reinforced with four bars of 25 mm diameter and four bars of 16 mm diameter. Then the transverse steel should be :
893. A rectangular channel of 2.5 m width and 2 m depth of water carries a flow of 10 m3/s. The specific energy for the flow is given by
894. Which of the following pollutants is responsible for depletion of ozone layer ?
895. If a composite bar of steel and copper is heated, then the copper bar will be subjected to
896. Consider the following discharge measurement devices :
1. Cylindrical mouthpiece flowing full
2. Sharp-edged orifice
3. Convergent-divergent mouthpiece
4. Borda's re-entrant mouthpiece flowing free
The correct sequence of increasing order of their discharge coefficients is
897. A square framework formed of uniform heavy rods of equal weight joined together is hung by one corner. A weight W is suspended from each of the three lower corners and the shape of the square is preserved .with the help of a light rod along the horizontal diagonal. The thrust of the light rod is
898. The maximum bending moment at the left quarter point of a simple beam due to crossing of UDL of length shorter than the span in the direction left to right, would occur after the load had just crossed the section by
899. The formulation for BOD assimilation in a stream should include
900. A truss is shown in the given figure. The cross-sectional area of each member is 'A' and the modulus of elasticity of the material is E. The strain energy in the member XY is given by