September 2023

Q. A city generates 40×106 kg of municipal solid waste (MSW) per year, out of which only 10% is recovered/recycled and the rest goes to landfill. The landfill has a single lift of 3 m height and is compacted to a density of 550 kg/m3. If 80% of the landfill is assumed to be MSW, […]

Q. For routing of flood in a given channel using the Muskingum method, two of the routing coefficients are estimated as C0 = – 0.25 and C1 = 0.55. The value of the third coefficient C2 would be                  Ans: 0.7 Sol: The Muskingum equation can be written as

Q. A 10 m wide rectangular channel carries a discharge of 20 m3/s under critical condition. Using g = 9.81 m/s2, the specific energy (in m, up to two decimal places) is              Ans: 1.10 – 1.20 Sol: Given: Rectangular channel of width (B) = 10 m, Discharge (Q) = 20 m3/s, and g =

Q. A 1:50 model of a spillway is to be tested in the laboratory. The discharge in the prototype spillway is 1000 m3/s. The corresponding discharge (in m3/s, up to two decimal places) to be maintained in the model, neglecting variation in acceleration due to gravity, is                                          Ans: 0.05 – 0.06 Sol: Given: Discharge

Q. A core cutter of 130 mm height has inner and outer diameters of 100 mm and 106 mm, respectively. The area ratio of the core cutter (in %, up to two decimal places) is    Ans: 12.30-12.40 Sol: