civil engineering MCQs – Page 30

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 Review each marked answer and report any item that may be outdated or unclear.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

581. If the water table rises upto ground surface, then the___________________?
0

A. total stress is increased due to de-crease in pore water pressure but effective stress does not change

B. effective stress is reduced due to increase in pore water pressure only but total stress does not change

C. total stress is reduced due to increase in pore water pressure only but effec-tive stress does not change

D. effective stress is reduced due to decrease in total stress only but pore water pressure does not change

582. Which of the following has high tensile strength ?
0

A. heat treated rolled wires

B. plain hot rolled wires

C. all have same tensile strength

D. cold drawn wires

583. In prestressed concrete______________?
0

A. forces of tension and compression change but lever arm remains unchanged

B. forces of tension and compressions remain unchanged but lever arm changes with the moment

C. both forces of tension and compres-sion as well as lever arm change

D. both forces of tension and compres-sion as well as lever arm remain unchanged

584. Ratio of permissible stress in direct compression and bending compression is______________?
0

A. less than 1

B. between 1.5 and 2.0

C. between 1 and 1.5

D. greater than 2

585. The main reinforcement in the toe of a T- shaped R C. retaining wall is provided on_______________?
0

A. e="color: #003f1a;">4. bottom face perpendicular to the wall

B. e="color: #003f1a;">2. top face perpendicular to the wall

C. correct answer is ?

D. ="color: #003f1a;">1. top face parallel to the wall

E. e="color: #003f1a;">3. bottom face paralleUo the wall

586. A 600 mm square bearing plate settles by 15 mm in plate load test on a cohesionless soil under an intensity of loading of 0.2 N/ram2. The settlement of a prototype shallow footing 1 m square under the same intensity of loading is_______________?
0

A. 25 mm

B. greater than 25 mm

C. 15 mm

D. between 15 mm and 25 mm

587. For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the diameter of bar nor less than_______________?
0

A. 15 mm

B. 25 mm

C. 40 mm

D. 30 mm

588. If C is creep coefficient, f is original pre-stress in concrete, m is modular ratio, E is Youngs modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is________________?
0

A. (C 1)mf eE

B. (1 C)mf + eE

C. (1 C) mf eE

D. (C 1)mf + eE

589. The maximum permissible size of aggregates to be used in casting the ribs of a slab, is______________?
0

A. 15 mm

B. 5 mm

C. 10 mm

D. 7.5 mm

590. The neutral axis of a T-beam exists_________________?
0

A. All the above

B. Within the flange

C. At the bottom edge of the slab

D. Below the slab

591. An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus_______________?
0

A. UDL of wall

B. UDL of wall + load from the roof

C. Triangular load of the wall

D. Triangular load + load from the roof

592. In a pile of length /, the points of suspension from ends for lifting it are located at______________?
0

A. 0.207 1

B. 0.293 /

C. 0.333 /

D. 0.25 /

593. For the design of retaining walls, the minimum factor of safety against overturning is taken as_____________?
0

A. 2.5

B. 1.5

C. 2.0

D. 3

594. In a ring beam subjected to uniformly distributed load______________?
0

A. e="color: #003f1a;">3. torsion at mid span is zero

B. e="color: #003f1a;">4. torsion at mid span is maximum

C. ="color: #003f1a;">1. shear force at mid span is zero

D. correct answer is ?

E. e="color: #003f1a;">2. shear force at mid span is maximum

595. Normally prestressing wires are arranged in the_______________?
0

A. center

B. lower part of the beam

C. upper part of the beam

D. anywhere

596. The percentage of reinforcement in case of slabs, when high strength deformed bars are used is not less than________________?
0

A. 0.3

B. 1

C. 0.15

D. 0.12

597. Select the incorrect statement?
0

A. none of the above

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

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

D. Pretensioning system has greater certainty about its durability.

598. Bishops method of stability analysis_______________?
0

A. assumes the slip surface as an arc of a circle

B. neglects the effect of forces acting on the sides of the slices

C. is more conservative

D. all of the above

599. Select the correct statement?
0

A. coefficient of compressibility of an over-consolidated clay is less than that of a normally consolidated clay

B. coefficient of compressibility of an over-consolidated clay is greater than that of a normally consolidated clay

C. coefficient of compressibility is cons-tant for any clay

D. none of the above

600. Critical section for shear in case of flat slabs is at a distance of_______________?
0

A. d/2 from periphery of column/capital/ drop panel

B. at the periphery of column

C. effective depth of slab from periphery of column/drop panel

D. at the drop panel of slab

Previous Next

Showing 581 to 600 of 6149 mcqs