DFCCIL'21 CE: Daily Practice Quiz. 30-August-2021 |_00.1
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DFCCIL’21 CE: Daily Practice Quiz. 30-August-2021

DFCCIL (Dedicated Freight Corridor Corporation of India Limited) Exam Date 2021 on September and October 2021 so boost your preparation by attempt this Civil Engineering Strength of Material quiz for DFCCIL recruitment 2021.

Quiz: Civil Engineering
Exam: DFCCIL-JE
Topic: Strength of Material

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

Q1. The strain energy stored in a cantilever beam loaded as shown, will be:
DFCCIL'21 CE: Daily Practice Quiz. 30-August-2021 |_40.1
(a) (P^2 l^3)/4E
(b) (P^2 l^3)/3EI
(c) (P^2 l^3)/2EI
(d) (P^2 l^3)/6EI

Q2. In case of cantilever, irrespective of the type of loading, the maximum bending moment and maximum shear force occur at–
(a) fixed end
(b) free end
(c) middle
(d) any point

Q3. A beam is fixed at one end and free at the other end. A load Acts in the center. The maximum bending moment will occur at–
(a) between center and fixed end
(b) under the load
(c) fixed end
(d) free end

Q4. A simply supported beam is subjected to a point load P at the middle of the beam. The correct normal stress distribution across its cross-section is given by which figure?

DFCCIL'21 CE: Daily Practice Quiz. 30-August-2021 |_50.1

Q5. The strength of the beam mainly depends on-
(a) section modulus
(b) its weight
(c) bending moment
(d) centre of gravity of the section

Q6. The shear stress distribution over a rectangular cross-section of a beam follows____________.
(a) A straight line path
(b) A circular path
(c) A parabolic path
(d) An elliptical path

SOLUTION

DFCCIL'21 CE: Daily Practice Quiz. 30-August-2021 |_60.1

S2. Ans.(a)
Sol. In case of cantilever, irrespective of type of loading, the maximum bending moment and shear force occur at fixed end because there is only one support at the fixed end which gives the reactive force or moment for equilibrium.

S3. Ans.(c)
Sol.DFCCIL'21 CE: Daily Practice Quiz. 30-August-2021 |_70.1

From the figure we can see that, the maximum bending moment at the fixed end.
Or we can directly say for cantilever beam maximum bending moment or shear force at the fixed end Irrespective of loading.
S4. Ans.(c)
Sol. for a simply supported beam subjected to a point load P at the middle of the beam, the normal stress distribution in given by

DFCCIL'21 CE: Daily Practice Quiz. 30-August-2021 |_80.1
S5. Ans.(a)
Sol. the strength of the beam mainly depends upon section modulus because the strength is mainly depends upon moment of resistance.
M_R=σ_b Z
σ_b is depend on material, so it is depend on section modulus.

S6. Ans.(c)
Sol. the shear distribution over a rectangular cross – section of a beam follows a parabolic path.

DFCCIL'21 CE: Daily Practice Quiz. 30-August-2021 |_90.1

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