civil-engineering-upsc-civil-service-exam-questions Related Question Answers

51. While driving a large number of piles in loose sand :





52. Surface tension of water when in contact with air is 0.0737 N/m. The difference of pressure between the inside and outside of a droplet of rain water 1 mm in diameter is nearly equal to





53. The upstream slope of an earth dam under steady seepage condition is





54. What are the magnitudes of horizontal and vertical support reactions, respectively at support. A of the frame shown in figure below ?





55. Consider the following statements : Shrinkage of concrete depends upon the 1. relative humidity of the atmosphere. 2. passage of time. 3. applied stress. Which of these statements is/are correct ?





56. Consider the following statements : Wind rose diagram is used for the purpose of 1. runway orientation. 2. estimating the runway capacity 3. geometric design of holding apron. Of these statements :





57. The discharge per metre width at the foot of a spillway is 10 m3/s at a velocity of 20 m/s. A perfect free hydraulic jump will occur at the foot of the spillway when the tail water depth is approximately equal to





58. Which one of the following is the appropriate triaxial test to assess the immediate stability of an unloading problem, such as an excavation of a clay slope ?





59. A mild steel flat subjected to a tensile force of 84 tonnes is connected to a gusset plate using rivets. If the forces required to shear a single rivet, to crush the rivet and to tear the plate per pitch length are 5000 kg, 8000 kg and 6000 kg respectively, then the number of rivets required is





60. What does the confining pressure used in triaxial compression tests on an undisturbed soil sample represent ?





61. The distance between two bench marks is 1000 m. If during levelling, the total error due to collimation, curvature and refraction is found to be + 0.120 m, then the magnitude of the collimation error is





62. Mercury (density = 13600 kg/m3, σ = 0.49N/mm internal diameter open-ended capillary tube is inserted in the middle of the beaker into the mercury. The meniscus in the tube will be below the external mercury surface by how much distance?





63. Which one of the following is considered to be an advantage of the heading and benching method of tunes construction ?





64. In a close-coiled helical spring subjected to an axial load, other quantities remaining the same, if the wire diameter is doubled, then the stiffness of the spring when compared to the original one, will become





65. The plastic section modulus of a rectangular section of width 100 mm and depth 12 mm is





66. Consider the following factors pertaining to flow through soil: 1. Hydraulic gradient 2. Grain size 3. Void ratio 4. Cross-sectional area of the sample. Of these, the factors affecting permeability include





67. In drawing AOA networks and making time computations, the following processes are involved : 1. Activity listing 2. Work breakdown structure 3. Activity time allotment 4. Consideration of available resources for each activity 5. Activity dependencies 6. Float computations 7. Backward path computation 8. Project duration 9. Forward path computation What is the correct sequence of the processes given above ?





68. Timber can be made more fire resistant by




69. Which one of the following is correct in respect of the influence line for the bending moment at one-fourths of the span from left support of a prismatic beam simply supported at ends ?





70. Consider the following statements : In a uni-dimensional stress system, the principal plane is defined as one on which the 1. shear stress is zero. 2. normal stress is zero. 3. shear stress is maximum. 4. normal stress is maximum. Of these statements :





71. Which one of the following pairs relating to flumes carrying open channel flow is correctly matched ?





72. A cylindrical vessel with a constant plane area of 1 m2 is rotated about its vertical axis such that the liquid inside the vessel is about to spill. If the height of the vessel is 2 m and the height of the paraboloid at 1 m, then the volume (in m3) of the liquid in the vessel will be





73. The commission which enquired about Mangalapuram Aeroplane accident?





74. Consider the following statements with reference to oxidation ponds : 1. They require high initial investments 2. They have low operational cost 3. They are also called stabilization ponds. Which of the statements given above are correct ?





75. The length, coefficient of thermal expansion and Young's modulus of bar 'A' are twice that of bar 'B'. If the temperature of both bars is increased by the same amount while preventing any expansion, then the ratio of stress developed in bar A to that in bar B will be





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