Geotechnical Engineering

DHARM

N-GEO\OBJ.PM5 897

OBJECTIVE QUESTIONS 897

50. Dupuit, Thiem


51. (b)


52. k = 100 D 102


53. laminar, circular pipe (cylindrical conduit)


54. False


55. decreases


56. False


57. False


58. the zone above the water–table saturated
    by Capillary moisture


59. False


60. (c)


61. nf /nd (nf = number of flow channels, nd =
    number of equipotential drops); permeabil-
    ity.


62. Unconfined


63. Laplace’s


64. (a)


65. (c)


66. j = i.γw (i = hydraulic gradient, γw = unit
    weight of water)


67. decreased


68. normally consolidated


69. Unity


70. (b)


71. Cc = 0.009 (wL – 10)


72. (a)


73. Secondary consolidation


74. (b)


75. infinite


76. (a)


77. (d)


78. T = (π/4) U^2


79. (a)


80. (c)


81. False


82. (i) Interlocking
    (ii) friction between individual grains
    (iii) Cohesion


83. Mohr-Coulomb


84. (a)


85. Hvorselv’s true


86. (b)
    87. Direct shear test (shear box test)
    88. (c)
    89. (σ 1 + σ 3 )/2, (σ 1 + σ 3 )/2
    90. unconfined compression test
    91. (b)
    92. (c)
    93. dense
    94. Critical void ratio
    95. overconsolidated or undisturbed sensitive
    96. (a)
    97. rapid drawdown
    98. (b)
    99. decrease


87. central angle


88. σz = 3Q/2πz^2


89. stress isobar or pressure bulb


90. Westergaard’s theory


91. False


92. q/π


93. N.M. Newmark


94. Newmark’s chart


95. equivalent point load method or (2:1
    method)


96. smaller


97. time-rate of settlement and total settlement


98. infinite


99. centre of the footing


100. (b)


101. dry density


102. smaller


103. True


104. Higher


105. True


106. Vibration


107. the ratio of dry density obtained in the field
     to the Proctor maximum dry density.


108. (c)


109. True


110. A little, relatively larger


111. Ko = ν
     ()1−ν

, ν being the Poisson’s ratio of

the soil.