Soil Mechanics and Foundation Engineering

61. Coefficient of earth pressure at rest is

1. Less than active earth pressure but greater than passive earth pressure
2. Greater than active earth pressure but less than passive earth pressure
3. Greater than both the active earth pressure and passive earth pressure
4. Less than both the active and passive earth pressures

View answer

62. Coefficient of permeability of soil

1. Does not depend upon temperature
2. Increases with the increase in temperature
3. Increases with the decrease in temperature
4. None of the above

View answer

63. Cohesionless soil is

1. Sand
2. Silt
3. Clay
4. Clay and silt

View answer

64. Cohesive soils are generally

1. Plastic and also compressible
2. Elastic and also compressible
3. Plastic but incompressible
4. None of these

View answer

65. Compressibility of sandy soils is

1. Almost equal to that of clayey soils
2. Much greater than that of clayey soils
3. Much less than that of clayey soils
4. None of the above

View answer

66. Compression of soil occurs rapidly if voids are filled with

1. Air
2. Water
3. Partly with air and partly with water
4. None of these

View answer

67. Contact pressure beneath a rigid footing resting on cohesive soil is

1. Less at edges compared to middle
2. More at edges compared to middle
3. Uniform throughout
4. None of the above

View answer

68. Coulomb's wedge theory assumes that

1. Back fill is dry, cohesionless, homogeneous and isotropic
2. Slip surface is the plane which passes through the heel of the wall
3. Position and direction of the resultant earth pressure are known
4. All the above

View answer

69. Darcy's law is applicable to seepage if a soil is

1. Homogeneous
2. Isotropic
3. Incompressible
4. All the above

View answer

70. Degree of consolidation is

1. Directly proportional to time and inversely proportional to drainage path
2. Directly proportional to time and inversely proportional to square of drainage path
3. Directly proportional to drainage path and inversely proportional to time
4. Directly proportional to square of drainage path and inversely proportional to time

View answer