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DFCCIL’21 CE: Daily Practice Quiz. 16-August-2021

Quiz: Civil Engineering
Exam: DFCCIL-JE
Topic: MISCELLANEOUS

Each question carries 1 mark
Negative marking: 1/4 mark
Time: 8 Minutes

Q1. The constant vertical distance between two adjacent contours is called _____.
(a) Horizontal interval
(b) Horizontal equivalent
(c) Vertical equivalent
(d) Contour interval

Q2. Water content of a soil sample is the difference of the weight of the given sample at the given temperature and the weight determined after drying it for 24 hours at temperatures ranging from ____.
(a) 80°C to 90° C
(b) 90°C to 95° C
(c) 95°C to 100° C
(d) 105°C to 110° C

Q3. Pick up the correct statement from the following _____.
(a) The void ratio in soils is defined as the ratio of the volume of voids to the volume of solids
(b) The porosity of a soil is defined as the ratio of the volume of voids to the gross volume of the soil
(c) The bulk density of a soil is defined as the unit weight of the soil
(d) All options are correct

Q4. According to the recommendations of Nagpur Conference the width formation of an ideal National Highway in hard rock cutting is _____.
(a) 8.9 m
(b) 7.9 m
(c) 6.9 m
(d) 6.5 m

Q5. If L is the length of a rail and R is the radius of a curve, the versine h for the curve is _____.
(a) h= L/4R
(b) h= L2/4R
(c) h= L2/8R
(d) h= L2/16R

Q6. Pick up the incorrect statement from the following.
(a) Manholes are provided in sewer pipes at suitable intervals
(b) Catch basins are generally provided in sewers for carrying drainage discharge
(c) Inlets are generally provided in all sewers
(d) None of the these

SOLUTION

S1. Ans.(d).
Sol. The constant vertical distance between two adjacent contours is called contour interval and the horizontal distance between two adjacent contours is called horizontal equivalent.

S2. Ans.(d).
Sol. This is the oven dry method of determination of water content, the temperatures ranging from 105°C to 110°C specially in case of inorganic soil and for organic soil the temperature is about 60°C.

S3. Ans.(d).
Sol.
The void ratio in soils is defined as the ratio of the volume of voids to the volume of solids.
▭(e=V_V/V_S )
The porosity of a soil is defined as the ratio of the volume of voids to the gross volume of the soil.
▭(n=V_V/V)
The bulk density of a soil is defined as the unit weight of the soil.
γ_b=WV

S4. Ans.(b).
Sol. Nagpur conference is the second 20 years road plan which is held at Nagpur (1961- 1981). According to the recommendations of Nagpur Conference, the width formation of an ideal National Highway in hard rock cutting is 7.9 m.

S5. Ans.(c).
Sol. If L is the length of a rail and R is the radius of a curve, the versine of curve (h) is given by –
▭(h=L^2/8R)

S6. Ans.(c).
Sol.
Inlets are not generally provided in all sewers.
Manholes are provided in sewer pipes at suitable intervals.
Catch basins are generally provided in sewers for carrying drainage discharge.

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