civil engineering MCQs – Page 242

Practise multiple-choice questions from civil engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

civil engineering Mcqs

4821. As per Whitneys theory, the maximum moment of resistance of the balanced section of a beam of width b and effective depth d is given by_______________?
0

A. 0.43acybd2

B. ^acybd2

C. 0.185acybd2

D. re acy is the cylinder compressive strength of concrete

E. ^acybd2

4822. According to Whitneys theory, ultimate strain of concrete is assumed to be_____________?
0

A. 3%

B. 0.3%

C. 0.03%

D. 0.10%

4823. In T-shaped R C. retaining walls, the main reinforcement in the stem is provided on______________?
0

A. the front face in one direction

B. the front face in both directions

C. the inner face in one direction

D. the inner face in both directions

4824. The depth of footing for an isolated column is governed by______________?
0

A. pan style="color: #003f1a;">2. shear force

B. an style="color: #003f1a;">1. maximum bending moment

C. pan style="color: #003f1a;">3. punching shear

D. correct answer is?

4825. In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always________________?
0

A. zero

B. tensile

C. compressive

D. tensile or compressive

4826. Which of the following losses of prestress occurs only in pretensioning and not in post-tensioning ?
0

A. elastic shortening of concrete

B. loss due to friction

C. creep of concrete

D. shrinkage of concrete

4827. A beam curved in plan is designed for_______________?
0

A. bending moment and torsion

B. shear and torsion

C. bending moment and shear

D. bending moment, shear and torsion

4828. The effect of adding calcium chloride in concrete is________________?
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A. e="color: #003f1a;">2. to decrease shrinkage

B. (1) and (3)

C. (2)and (4)

D. ="color: #003f1a;">1. to increase shrinkage

E. correct answer is?

F. e="color: #003f1a;">4. to decrease setting time

4829. If the foundations of all the columns of a structure are designed on the total live and dead load basis, then_________________?
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A. the settlement of exterior columns will be more than interior columns

B. there will be no differential settlement

C. there will be no settlement of columns

D. the settlement of interior columns will be more than exterior columns

4830. Shrinkage of concrete depends upon_____________?
0

A. pan style="color: #003f1a;">2. passage of time

B. an style="color: #003f1a;">1. humidity of atmosphere

C. correct answer is?

D. pan style="color: #003f1a;">3. stress

4831. Stress strain curve of high tensile steel_______________?
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A. does not show definite yield point but yield point is defined by 2% proof stress

B. does not show definite yield point but yield point is defined by 0.1% proof stress

C. has a definite yield point

D. does not show definite yield point but yield point is defined by 0.2% proof stress

4832. Which of the following has high tensile strength ?
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A. heat treated rolled wires

B. plain hot rolled wires

C. cold drawn wires

D. all have same tensile strength

4833. According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is__________________?
0

A. 0.55 d

B. 0.43 d

C. 0.68 d

D. 0.85 d

4834. Select the incorrect statement?
0

A. For heavy loads and large spans in buildings or bridges, post-tensioning system is cheaper than pretensioning system

B. none of the above

C. Pretensioning system has greater certainty about its durability.

D. The loss of prestress is more in pre-tensioning system than in post-tensioning system.

4835. Examine the following statements ___________?
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A. pan style="color: #003f1a;">4. Factor of safety for concrete should be based on its ultimate stress.

B. pan style="color: #003f1a;">2. Factor of safety for steel should be based on its ultimate stress,

C. pan style="color: #003f1a;">3. Factor of safety for concrete should be based on its yield stress,

D. an style="color: #003f1a;">1. Factor of safety for steel should be based on its yield stress,

E. correct statements are

4836. The critical section for finding maximum bending moment for footing under masonry wall is located_______________?
0

A. halfway between the middle and edge of the wall

B. at the edge of the wall

C. at the middle of the wall

D. at a distance equal to effective depth of footing from the edge of the wall

4837. According to Whitneys theory, depth of stress block for a balanced section of a concrete beam is limited to_______________?
0

A. 0.85 d

B. 0.68 d

C. 0.537 d

D. 0.43 d

4838. The purpose of reinforcement in prestressed concrete is________________?
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A. all of the above

B. to impart initial compressive stress in concrete

C. to resist tensile stresses

D. to provide adequate bond stress

4839. Ultimate strength of cold drawn high steel wires_______________?
0

A. increases with increase in diameter of bar

B. does not depend on diameter of bar

C. decreases with increase in diameter of bar

D. none of the above

4840. Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than__________________?
0

A. 35 MPa and 42 MPa

B. 42 MPa and 53 MPa

C. 42 MPa and 35 MPa

D. 53 MPa and 42 MPa

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