Q. A survey line was measured to be 285.5 m with a tape having a nominal length of 30 m. On checking, the true length of the tape was found to be 0.05 m too short. If the line lay on a slope of 1 in 10, the reduced length (horizontal length) of the line […]
Q. Sedimentation basin in a water treatment plant is designed for a flow rate of 0.2 m3/s. The basin is rectangular with a length of 32 m, width of 8 m, and depth of 4 m. Assume that the settling velocity of these particles is governed by the Stokes’ law. Given: density of the particles
Q. If the section shown in the figure turns from fully-elastic to fully-plastic, the depth of neutral axis (N.A.), y , decreases by (A) 10.75 mm (B) 12.25 mm (C) 13.75 mm (D) 15.25 mm Ans: 13.75 mm Solution: For fully elastic case, For fully plastic case,Equal area axis at y = 5 mmN.A reduces
Q. The cross-section of a built-up wooden beam as shown in the figure (not drawn to scale) is subjected to a vertical shear force of 8 kN. The beam is symmetrical about the neutral axis (N.A.) shown, and the moment of inertia about N.A. is 1.5×109 mm4. Considering that the nails at the location P
Q. A rectangular open channel has a width of 5 m and a bed slope of 0.001. For a uniform flow of depth 2 m, the velocity is 2 m/s. The Manning’s roughness coefficient for the channel is (A) 0.002 (B) 0.017 (C) 0.033 (D) 0.050 Ans: 0.017
Q. A concentrated load of 500 kN is applied on an elastic half space. The ratio of the increase in vertical normal stress at depths of 2 m and 4 m along the point of the loading, as per Boussinesq’s theory, would be____________ Solution:
Q. A soil has specific gravity of its solids equal to 2.65. The mass density of water is 1000 kg/m3. Considering zero air voids and 10% moisture content of the soil sample, the dry density (in kg/m3, round off to 1 decimal place) would be______________ Solution:
Q. The probability that the annual maximum flood discharge will exceed 25000 m3/s, at least once in next 5 years is found to be 0.25. The return period of this flood event (in years, round off to 1 decimal place) is ________________ Solution: Probability to exceed maximum discharge at least once in next 5 years
Q. A circular duct carrying water gradually contracts from a diameter of 30 cm to 15 cm. The figure (not drawn to scale) shows the arrangement of differential manometer attached to the duct. When the water flows, the differential manometer shows a deflection of 8 cm of mercury (Hg). The values of specific gravity of
Q. The maximum number of vehicles observed in any five minute period during the peak hour is 160. If the total flow in the peak hour is 1000 vehicles, the five minute peak hour factor (round off to 2 decimal places) is _________________________ Sol: The five-minute peak hour factor for 5 minutes is defined as the
