26. In reinforced concrete, pedestal is defined as compression member, whose effective length does not exceed its least dimension by
27. Flexible pavements derive stability primarily from :
28. The permissible bending tensile stress in concrete for the vertical wall of an R.C. water tank made of M 25 concrete is :
29. The cylinder strength of the concrete is less than the cube strength because of
30. A water treatment plant is required to process 28800 m3/d of raw water (density = 1000 kg/m3, kinematic viscosity = 10-6 m2/s). The rapid mixing tank imparts tank a velocity gradient of 900s-1 to blend 35 mg/l of alum with the flow for a detention time of 2 minutes. The power input (W) required for rapid mixing is
31. An International Association which co-ordinates the police activities of member nations:?
32. A single rapid test to determine the pollu-tional status of river water is :
33. ..............is known as the ‘Spice State of India’?
34. Vane tester is normally used for determining in situ shear strength of :
35. For the frame shown in the below figure, the maximum bending moment in the column is,
36. In a compaction test, as the compaction effort is increased, the optimum moisture content
37. The peak discharge of the instantaneous unit hydrograph of a basin, when compared to the peak discharge of a 4-hour unit hydrograph of that basin, would be
38. The drop manholes are provided in a sewerage system when there is
39. The reaction time for calculation of stopping distance may be assumed as
40. The percentage error in the computed discharge over a triangular notch corresponding to an error of 1% in the measurement of the head over the notch, would be
41. The characteristic strength of concrete is defined as that compressive strength below which not more than
42. Un-factored maximum bending moments at a section of a reinforced concrete beam resulting from a frame analysis are 50, 80, 120 and 180 kNm under dead, live, wind and earthquake loads respectively. The design moment (kNm) as per IS: 456-2000 for the limit state of collapse (flexure) is
43. The microbial quality of treated piped water supplies is monitored by
44. The 5-day BOD of a wastewater sample is obtained as 190 mg/l (with k = 0.01 h-1). The ultimate oxygen demand (mg/l) of the sample will be
45. A tube well having a capacity of 4 m3/hour operates for 20 hours each day during the irrigation season. How much area can be commanded if the irrigation interval is 20 days and depth of irrigation is 7 cm ?
46. In a reinforced concrete beam-column, the increase in the flexural strength along with the increase in the axial strength occurs
47. The group efficiency of a pile group
48. A wastewater sample contains 10-5.6 mmol/l of OH ions at 25° C. The pH of this sample is
49. At a rated capacity of 44 Cumecs, a centrifugal pump develops 36 m of head when operating at 1450 rpm. Its specific speed is :
50. Presence of ifluoride in water greater than permissible level of 1.5 mg/l causes