DFCCIL'21 CE: Daily Practice Quiz. 12-August-2021 |_00.1
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DFCCIL’21 CE: Daily Practice Quiz. 12-August-2021

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

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

Q1. In chain surveying field work is limited to _______.
(a) Linear measurements only
(b) Angular measurements only
(c) Both linear and angular measurements
(d) All options are correct

Q2. The buckling load in a steel column is _______.
(a) Related to length
(b) Directly proportional to the slenderness ratio
(c) Inversely proportional to the slenderness ratio
(d) Non linearity of the slenderness ratio

Q3. The property of a soil which permits water to percolate through it, is called______.
(a) Moisture content
(b) Permeability
(c) Capillarity
(d) None of these

Q4. Euler’s equation for motion of liquids is based on the assumption that the ______.
(a) Flow is streamline
(b) Flow takes place continuously
(c) Flow is homogeneous and incompressible
(d) Flow is turbulent

Q5. If the depth is 8.64 cm on a field over a base period of 10 day, then the duty is
(a) 10 hectares per cumecs
(b) 100 hectares per cumecs
(c) 864 hectares per cumecs
(d) 1000 hectares per cumecs

Q6. Bending moment M and torque T is applied on a solid circular shaft. if the maximum bending stress equals to maximum shear stress developed, the M is equals to
(a) T/2
(b) T
(c) 2T
(d) 4T

SOLUTION

S1. Ans.(a)
Sol. In chain surveying only linear measurements are made that is lengths are only measured by chain or tape. Chain surveying is the simplest and the most accurate kind of surveying.

S2. Ans.(a)
Sol. As per Euler, The buckling load or Crippling load (P) of a column,
▭(P=(π^2 EI)/(l_eff^2 ))
Where,l_eff=effective length of column
Hence, the buckling load in a steel column is related to length.

S3. Ans.(b)
Sol. Soil permeability is the property of the soil to transmit water and air through it. The permeability in soil mechanics is a measure that how easily water can flow through a porous soil medium.

S4. Ans.(c)
Sol. Euler’s equation is based on the following assumptions:
❖ The fluid is non-viscous.
❖ The fluid is homogeneous and incompressible.
❖ The flow is continuous, steady and along the streamline.
❖ The velocity of the flow is uniform over the section.
❖ No energy or force (except gravity and pressure forces) is involved in the flow.

S5. Ans. (d)
Sol. Given, ∆ =8.64 cm = 0.0864 m, B = 10 days
Duty (D) = (8.64 × B)/(∆ ) = (8.64 × 10)/(0.0864 ) = 1000 hectares per cumecs.

S6. Ans. (a)
Sol. Maximum Bending Stress (σ_max)=32M/(πD^3 )
Maximum Shear Stress (τ_max)=16T/(πD^3 )
σ_max= τ_max (as per question)

32M/(πD^3 )= 16T/(πD^3 )

M = T/2

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