RRB JE Stage II : Civil Engineering Quiz | 19th August

Dear aspirants,

RRB JE Stage II exam is scheduled to be conducted from 28th August to 1st September 2019. The overall merit for the selection will be made on the basis of the marks scored in stage II, so candidates need to prepare thoroughly for the second stage. To help the aspirants, Adda247 has come up with a study plan in which we will provide you daily quizzes of all technical subjects. The below quiz will be helpful for the candidates who opted Civil as the exam group in RRB JE stage II.

Q1. Match List-I (Property of soil) with List-II (Laboratory equipment) and select the correct answer using the codes given below
List_I
A. Graine size
B. Specific gravity
C. Coefficienty of permeability
D. Cohesion
List-II
1. Pycnometer
2. Permeameter
3. Vane shear apparatus
4. Pipette
Codes:
    A B C D
(a) 4 1 2 3
(b) 4 2 1 3
(c) 3 1 2 4
(d) 1 4 3 2

S1. Ans.(a)
Sol.

Q2. For a given soil sample,

(a) 2.00
(b) 1.75
(c) 1.50
(d) 1.25
Q3. At liquid limit, all soils possess
(a) same shear strength of small magnitude
(b) same shear strength of large magnitude
(c) different shear strengths of small magnitude
(d) different shear strengths of large magnitude

S3. Ans.(a)
Sol.

Q4. Inorganic soil with low compressibility are represented by
(a) MH
(b) SL
(c) ML
(d) CH

S4. Ans.(c)
Sol. In ML; M represents inorganic silt,
L represents low compressibility,
MH. Inorganic silt of high compressibility,
SL: Sand of low compressibility,
CH: Clay with high compressibility.

Q5. Vibrofloatation techniques is best suited for densifying
(a) very loose sands below water table
(b) layered clays
(c) organic clays
(d) coarse sands and gravels

S5. Ans.(a)
Sol.
Q6. Given below are methods of compaction:

1. Vibration technique
2. Flooding the soil
3. Sheep foot roller
4. Tandem roller
Heavy weights dropped from a height
The methods suitable for cohesionless soils include
(a) 1, 2 and 3
(b) 2, 3 and 4
(c) 1, 2 and 5
(d) 3, 4 and 5

S6. Ans.(c)
Sol. Cohesionless soil can be compacted by vibration; flooding and dropping heavy weight from height. Kneading and tamping actions provided by sheeps foot roller and tandem roller are not effective for cohesionless soils.

Q7. The unit weight of a soil at zero air voids depends on
(a) specific gravity
(b) water content
(c) unit weight of water
(d) All the above

S7. Ans.(d)
Sol. Unit weight at zero air void corresponds to dry density of soil.

∴ it depends on specific gravity, water content and unit weight of water.

Q8. The growth of population can be conveniently represented by a curve, which is amenable to mathematical solution. The type of this curve is
(a) semilog curve
(b) straight line curve
(c) logistic curve
(d) exponential curve

S8. Ans.(c)
Sol. Equation of logistic curve is given by,

Where, P_0= The population at the start6 pt. of the curve A
P_s= Saturation population
P= Population at any time from the origin A
K=Constant

Q9. The pipe mains carrying water from the source to the reservoir are designed for the
(a) maximum daily draft
(b) average daily draft
(c) maximum hourly draft of the maximum day
(d) maximum weekly draft

S9. Ans.(a)
Sol.

Q10. The domestic use of water amounts to _____ of the total water requirements per capita per day
(a) 40%
(b) 50%
(c) 20%
(d) 30%

S10. Ans.(b)
Sol. Total domestic water consumption usually amounts ot 50 – 60% of the total wter consumption.

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