Question 31. For subcritical flow in an open channel, the control section for gradually varied flow profiles is

Question 32. Group-I contains dimensionless parameters and Group- II contains the ratios.Group-I                       Group -IIP. Mach Number   1. Ratio of inertial force and gravitational forceQ. Reynolds Number 2. Ratio of fluid velocity and velocity of soundR. Weber Number   3. Ratio of inertial force and viscous forceS. Froude Number  4. Ratio of inertial force and surface tension forceThe correct match of dimensionless parameters in Group- I with ratios in Group-II is:

Question 33. An isohyet is a line joining points of

Question 34. Some of the water quality parameters are measured by titrating a water sample with a titrant. Group-I gives a list of parameters and Group-IIgives the list of titrants.Group-I                      Group-IIP.Alkalinity                1. N/35.5 AgNO3Q. Hardness              2. N/40 Na2S2O3 R. Chloride                 3. N/50 H2SO4S. Dissolved oxygen 4. N/50 EDTAThe correct match of water quality parameters in Group-I with titrants in Group-II is:

Question 35. For a two dimensional flow field, the stream function áµ  is given as áµ  = 3/2(y2 - x2). The magnitude of discharge occurring between the stream lines passing through points (0,3) and (3,4) is:

Question 36. A rectangular concrete beam 250 mm wide and 600 mm deep is pre-stressed by means of 16 high tensile wires, each of 7 mm diameter, located at 200 mm from the bottom face of the beam at a given section. If the effective pre-stress in the wires is 700 MPa, what is the maximum sagging bending moment (in kNm) (correct to 1-decimal place) due to live load that this section of the beam can with stand without causing tensile stress at the bottom face of the beam? Neglect the effect of dead load of beam.______

Question 37. The top width and the depth of flow in a triangular channel were measured as 4 m and 1 m, respectively. The measured velocities on the centre line at the water surface, 0.2 m and 0.8 m below the surface are 0.7 m/s, 0.6 m/s and 0.4 m/s, respectively. Using two-point method of velocity measurement, the discharge (in m3/s) in the channel is

Question 38. A layer of normally consolidated, saturated silty clay of 1 m thickness is subjected to one dimensional consolidation under a pressure increment of 20 kPa. The properties of the soil are: specific gravity = 2.7, natural moisture content = 45%, compression index = 0.45, and recompression index = 0.05. The initial average effective stress within the layer is 100 kPa. Assuming Terzaghi's theory to be applicable, the primary consolidation settlement (rounded off to the nearest mm) is

Question 39. Group I contains parameters and Group II lists methods/instruments.Group I                                                Group IIP. Streamflow velocity                  1. AnemometerQ. Evapo-transpiration rate        2. Penman's methodR. Infiltration rate                         3. Horton's methodS. Wind velocity                            4. Current meterThe CORRECT match of Group I with Group II is

Question 40. Wheat crop requires 55 cm of water during 120 days of base period. The total rainfall during this period is 100 mm. Assume the irrigation efficiency to be 60%. The area (in ha) of the land which can be irrigated with a canal flow of 0.01 m3/s is