Realtime Civil Engineering Soil Mechanics And Foundation Question and Answers

61.    The flownet for an earthen dam with 30 m water depth consists of 25 potential drops and 5 flow channels. The coefficient of permeability of dam material is 0.03 mm/sec. The discharge per metre length of dam is
a)    0.00018 nrVsec
b)    0.0045 m3/sec
c)    0.18m3/sec
d)    0.1125m3/sec
Ans:a

62.    The most suitable method for drainage of fine grained cohesive soils is
a)    well ppint system
b)    vacuum method
c)    deep well system
d)    electro-osmosis method
Ans:d

63.    Total number of stress components at a point within a soil mass loaded at its boundary is
a)    3
b)    6
c)    9
d)    16
Ans:c

64.    The slope of isochrone at any point at a given time indicates the rate of change of
a)    effective stress with time
b)    effective stress with depth
c)    pore water pressure with depth
d)    pore water pressure with time
Ans:c

65.    Within the consolidation process of a saturated clay
a)    a gradual increase in neutral pressure and a gradual decrease in effective pressure takes place and sum of the two is constant
b)    a gradual decrease in neutral pressure and a gradual increase in effective pressure takes place and sum of the two is constant
c)    both neutral pressure and effective pressure decrease
d)    both neutral pressure and effective pressure increase
Ans:b

66.    The value of compression index for a remoulded sample whose liquid limit is 50% is
a)    0.028
b)    0.28
c)    036
d)    0.036
Ans:b

67.    Which one of the following clays behaves like a dense sand ?
a)    over-consolidated ciay with a high over-consolidation ratio
b)    over-consolidated clay with a low over-consolidation ratio
c)    normally consolidated clay
d)    under-consolidated clay
Ans:a

68.    Coefficient of consolidation of a soil is affected by
a)    compressibility
b)    permeability
c)    both compressibility and permeability
d)    none of the above
Ans:c

69.    Degree of consolidation is
a)    directly proportional to time and inversely proportional to drainage path
b)    directly proportional to time and inversely proportional to square of drainage path
c)    directly proportional to drainage path and inversely proportional to time
d)    directly proportional to square of drainage path and inversely propor-tional to time
Ans:b

70.    Time factor for a clay layer is
a)    a dimensional parameter
b)    directly proportional to permeability of soil
c)    inversely proportional to drainage path
d)    independent of thickness of clay layer
Ans:b
Read More Soil Mechanics and Foundation Engineering Questions:
Part1 Part2 Part3 Part4 Part5 Part6 Part7 Part8 Part9 Part10