civil engineering MCQs – Page 54

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 Review each marked answer and report any item that may be outdated or unclear.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
1061. In plastic analysis, the shape factor for a triangular section, is_________________?
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A. 2.34

B. 1.5

C. 2.5

D. 1.34

1062. The possible loading in various members of framed structures are_______________?
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A. compression or tension

B. bending

C. all of the above

D. shear or tension

E. buckling or shear

1063. m1 and m2 are the members of two individual simple trusses of a compound truss. The compound truss will be rigid and determinate if__________________?
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A. m = m1 + m2 + 1

B. m = m + m + 3

C. m = m1 + m2

D. m = m1 + m2 + 2

1064. Center of percussion is______________?
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A. point of suspension

B. the point of metacentre

C. the point of C.G.

D. the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis

E. the point in a body about which it can rotate horizontally and oscillate under the influence of gravity

1065. The horizontal thrust on the ends of a two hinged semicircular arch of radius carrying_________________?
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A. non of these

B. end, is

C. . All the above

D. A uniforml 4/3

1066. A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span________________?
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A. 2.0 cm

B. 2.5 cm

C. 4.0 cm

D. 3.0 cm

E. 5.0 cm

1067. Frictional force encountered after commencement of motion is called________________?
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A. post friction

B. kinematic friction

C. limiting friction

D. frictional resistance

E. dynamic friction
1068. A steel rod of sectional area 250 sq. mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated to 100C. If steel = 0.000012/C, Esteel = 0.2 MN/mm2, the tensile force developed at a temperature of 50C, is_________________?
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A. 100 N/mm 2

B. 120 N/mm2

C. 150 N/mm2

D. 80 N/mm2

1069. Metacentric height for small values of angle of heel is the distance between the________________?
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A. centre of gravity and centre of buoy-ancy

B. centre of buoyancy and metacentre

C. free surface and centre of buoyancy

D. centre of gravity and metacentre
1070. Pick up the correct statement from the following?
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A. All the above

B. Hoop strain of the walls of a cylinder due to liquid is (pd/2tE) (1 1/2m)

C. Volumetric change in the cylinder due to liquid is (pd/2tE) (5/2 2/m)

D. Longitudinal strain in the walls of a cylinder due to liquid is (pd/2 tE) (1/2 1/m)

1071. Total strain energy theory for the failure of a material at elastic limit, is known_________________?
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A. Rankines theory

B. Guests or Trecas theory

C. St. Venants theory

D. Haigs theory
1072. There are two hinged semicircular arches A, B and C of radii 5 m, 7.5 m and 10 m respectively and each carries a concentrated load W at their crowns. The horizontal thrust at their supports will be in the ratio of_______________?
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A. 1 : 1 : 2

B. 2 : 1 : 1

C. 1 : 1 : 2

D. None of these

1073. An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be________________?
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A. 12 kN/m2

B. 14 kN/m2

C. 4 kN/m2

D. 10 kN/m2

1074. In case of a simply supported I-section beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, is_________________?
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A. L/4

B. L/3

C. L/2

D. L/5
1075. The greatest load which a spring can carry without getting permanently distorted, is called_________________?
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A. Stiffness

B. Proof load

C. Proof resilience

D. Proof stress

1076. In a Sutro weir, the discharge is proportional to________________?
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A. H3/2

B. H1/2

C. H

D. H5/2

1077. A steel bar 20 mm in diameter simply-supported at its ends over a total span of 40 cm carries a load at its centre. If the maximum stress induced in the bar is limited to N/mm2, the bending strain energy stored in the bar, is___________________?
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A. 711 N mm

B. 411 N mm

C. 511 N mm=

D. 611 N mm
1078. A simply supported uniform rectangular bar breadth b, depth d and length L carries an isolated load W at its mid-span. The same bar experiences an extension e under same tensile load. The ratio of the maximum deflection to the elongation, is________________?
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A. (L/3d)

B. (L/2d)

C. L/d

D. L/2d

1079. The forces, which meet at one point, but their lines of action do not lie in a plane, are called______________?
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A. non-coplanar non-concurrent forces

B. intersecting forces

C. none of the above

D. non-coplanar concurrent forces

E. coplanar non-concurrent forces

1080. Pick up the correct statement from the following?
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A. The angle made by the coil with horizontal, is called the angle of helix

B. The pitch of a close coil spring, is very small

C. All the above

D. A wire wound in spiral form, is called a helical spring