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Geotechnical Engineering
Soil Mechanics Objective
Quiz 1
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Q.1
For a mass of 3.of soil with voids ratio 0.find its saturated unit weight.
a) 20.44 KN/m3
b) 76.22
c) 23.55
d) 50.43
Q.2
For a remolded sample of clay with liquid limit of 45%, find its compression index.
a) 0.753
b) 0.561
c) 0.493
d) 0.245
Q.3
For an ordinary clay of medium sensitivity, the value of compression index is _____ if liquid limit is 50%.
a) 0.36
b) 0.45
c) 0.12
d) 0.64
Q.4
If change in voids ratio is 0.and change in effective pressure is 100KN/mthen the coefficient of compressibility is ______
a) 2.5×10-3 m2/kN
b) 2×10-3 m2/kN
c) 9×10-3 m2/kN
d) 9.5×10-3 m2/kN
Q.5
Two clay layer of A and B of thickness 2cm and 3 cm is load with pressure of 200KN/mIf the time taken by soil A to reachconsolidation is 1/4th of that required by soil B to reachconsolidation, then find the ratio of coefficients of consolidation.
a) 2.4432
b) 1.7778
c) 4.3312
d) 5.3489
Q.6
Two clay layer of A and B of thickness 2cm and 3 cm is load with pressure of 200KN/mIf the time taken by soil A to reachconsolidation is 1/4th of that required by soil B to reachconsolidation, then find the ratio of coefficients of Permeability. Given that ratio of coefficient of volume change is 1.751.
a) 5.234
b) 2.456
c) 3.114
d) 4.233
Q.7
A clay sample 24mm thick takesminutes to consolidatewith double drainage. The field clay layer from which sample was obtained takesdays to consolidatewith double drainage. Find the depth of the clay layer in the field.
a) 4m
b) 7m
c) 3m
d) 2m
Q.8
A clay sample 24mm thick takesminutes to consolidatewith double drainage. The field clay layer from which sample was obtained takesdays to consolidatewith single drainage. Find the depth of the clay layer in the field.
a) 5m
b) 2m
c) 22m
d) 16m
Q.9
A clay sample 24mm thick takesminutes to consolidatewith single drainage. The field clay layer from which sample was obtained takesdays to consolidatewith single drainage. Find the depth of the clay layer in the field.
a) 200cm
b) 367cm
c) 400cm
d) 569cm
Q.10
A clay sample 24mm thick takesminutes to consolidatewith single drainage. The field clay layer from which sample was obtained takesdays to consolidatewith double drainage. Find the depth of the clay layer in the field.
a) 800cm
b) 500cm
c) 600cm
d) 480cm
Q.11
For a foundation, find the elapsed time in whichof ultimate settlement will occur. The coefficient of consolidation is 4*10-4cm2/s. The average drainage path is 50cm.
a) 19.9 hours
b) 15.5 hours
c) 13.9 hours
d) 17.5 hours
Q.12
For a foundation, find the elapsed time in whichof ultimate settlement will occur. The coefficient of consolidation is 4*10-4cm2/s. The average drainage path is 50cm.
a) 56.38 days
b) 43.78 days
c) 61.34 days
d) 78.23 days
Q.13
If initial voids ratio is 1.then find the compression index.
a) 0.524
b) 0.243
c) 0.728
d) 0.871
Q.14
If excess hydraulic pressure is 19.KN/m2 then find the hydraulic head.
a) 2m
b) 4m
c) 8m
d) 16m
Q.15
Find the hydrostatic pressure of water at depth 10m.
a) 98.1KN/m2
b) 54. 1KN/m2
c) 32. 1KN/m2
d) 43. 1KN/m2
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