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Important Paper ESE - Civil Engineering
Q1. If the coefficient of permeability is doubled and the coefficient of volume compressibility is simultaneously halved, the coefficient of consolidation
- Increases by 2 times
- decreases by 2 times
- Increases by 4 times
- decreases by 4 times
Answer: (c)
Consider the following statements:
Lime stabilization of soil leads to
- Decrease in shrinkage limit
- Increase in plastic limit
- Decrease in liquid limit
- Flocculation of clay particles
Which of the above statements are correct?
(a) 1, 2 and 3
(b) 1, 2 and 4
(c) 1, 3 and 4
(d) 2, 3 and 4
Answer: (d)
- Arrange the following soils with respect to increasing order of realizable friction ratio:
- Loose gravel fill
- Sands or gravels
- Clay sand mixtures and silts
Q4. Clay and peats
- 1, 2, 3 and 4
- 4, 2, 3 and 1
- 1, 3, 2 and 4
- 4, 3, 2 and 1
Answer: (d)
Q4. In a 7 m thick solid stratum, with its initial void ratio of 0.40, the void ratio decreases to 0.30 when the effective pressure on the stratum is increased by 10kg/cm 2 . The consolidation settlement of the stratum will be
- 5 cm
- 50 cm
- 100 cm
- 150 cm
Answer: (b)
Q5. A theodolite was set up at P and the angle of elevation to the top of a mobile tower ST was 30°. The staff reading held at a station of RL 100 m was 2.555 m, the telescope being horizontal. The horizontal distance between the foot of the tower and the instrument station is 810 m. The RL of the top of the tower is
- 578.25 m
- 579.50 m
- 580.25 m
- 582.40 m
Answer: (c)
Q6. A stratum of soil consists of three layers of equal thickness. The permeability of both the top and the bottom layers is 10 -4 cm/s; and that of the middle layer is10 -3 cm/s; then the value of the horizontal coefficient of permeability for the entire composite of the soil layers is
- 2 × 10 -4 cm/s
- 3× 10 -4 cm/s
- 4 × 10 -4 cm/s
- 5 × 10 -4 cm/s
Answer: (c)
Q7. A cylindrical soil specimen of saturated, clay, 3.50 cm diameter and 8 cm length, is tested in an unconfined compression testing machine. The specimen failed under a vertical load of 50 kg together with an accompanying additional deformation of 8 mm. What is the unconfined compressive strength of this clay?
- 4.67 kg/cm 2
- 5.0 kg/cm 2
- 5.5 kg/cm 2
- 6.0 kg/cm 2
Answer: (a)
- Consider the following statements related to the properties of a good quality soil sample:
- Area ratio should be low
- Cutting edge should be thick
- Inside clearance should be high
- Outside clearance should be low
Which of the above statements are correct?
(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) 1 and 4
Answer: (d)
- Consider the following statements:
- The proportioning of footing in sand is more often governed by settlement rather than by bearing capacity.
- The pressure bulb profiles under a strip footing form as co-axially imaginable bulbs under its length.
- Friction piles are also called ‘floating piles’.
Which of the above statements are correct?
(a) 1, 2 and 3
(b) 1 and 2 only
(c) 1 and 3 only
(d) 2 and 3 only
Answer: (b)
- Which of the following factors affect the bearing capacity of cohesive soils?
- Density of the soil
- Angle of shearing resistance of the soil
- Depth of the footing
Q4. Width of the footing
- 1, 2 and 3 only
- 1, 2 and 4 only
- 2, 3 and 4 only
- 1, 2, 3 and 4
Answer: (d)
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