civil engineering Mcqs
1051. The equivalent length is of a column of length having both the ends fixed, is_________________?
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A. 2 L

B. L

C. L

D. L/2
1052. Ay between two stream lines represents________________?
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A. pressure

B. velocity

C. discharge

D. head

1053. The ratio of lateral strain to axial strain of a homogeneous material, is known___________________?
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A. Yield ratio

B. Poissons ratio

C. Plastic ratio

D. Hookes ratio

1054. At yield point of a test piece, the material__________________?
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A. Undergoes plastic deformation

B. Behaves in an elastic manner

C. Regains its original shape on removal of the load

D. Obeys Hookes law

1055. A compound bar consists of two bars of equal length. Steel bar cross -section is 3500 mm2and that of brass bar is 3000 mm2. These are subjected to a compressive load 100,000 N. If Eb = 0.2 MN/mm2 and Eb = 0.1 MN/mm2, the stresses developed are___________________?
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A. b = 6 N/mm2 s = 12 N/mm2

B. b = 8 N/mm2 s = 16 N/mm2

C. b = 10 N/mm2 s = 20 N/mm 2

D. b = 5 N/mm2 s = 10 N/mm2

1056. static equations i.e. H V M = 0, to a determinate structure, we may By applying the determine_________________?
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A. Shear forces only

B. All the above

C. Bending moments only

D. Supporting reactions only

1057. The equivalent length of a column of length L having one end fixed and the other end free, is______________?
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A. L

B. L/2

C. 2L

D. L

1058. If and are external and internal diameters of a circular shaft respectively, its polar moment of inertia, is________________?
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A. D4 d4)

B. D4 d4)

C. D4 d4)

D. D4 d4)
1059. A fluid of kinematic viscosity 0.4 cm2/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be__________________?
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A. 1.5 m/sec

B. 1 m/sec

C. less than 1 m/sec

D. 2 m/sec

1060. The unit of work or energy in S.I. units is________________?
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A. watt

B. pascal

C. kilogram meter

D. newton

E. joule
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

1081. Size of a venturimeter is specified by________________?
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A. pipe diameter

B. throat diameter

C. angle of diverging section

D. both pipe diameter as well as throat diameter

1082. The degree of indeterminacy of the frame in the given figure, is______________?
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A. 2

B. Zero

C. 3

D. 1
1083. Maximum strain theory for the failure of a material at the elastic limit, is known as_______________?
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A. St. Venants theory

B. Rankines theory

C. Guests or Trecas theory

D. Haigs theory

1084. The wake_______________?
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A. none of the above

B. always occurs before a separation point

C. is a region of high pressure intensity

D. always occurs after a separation point
1085. The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is_______________?
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A. parabolic distribution across the section

B. zero at the mid plane and varies linearly with distance from mid plane

C. zero at plates and increases linearly to midpoint

D. constant over the cross section

1086. Drag force is a function of________________?
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A. projected area of the body

B. mass density of the fluid

C. velocity of the body

D. correct answer is ?

1087. Pick up the correct statement from the following ?
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A. If tensile stress is less than axial stress, the section experiences compressive stress

B. All the above

C. If tensile stress is equal to axial stress, the section experiences compressive stress

D. The moment of inertia is calculated about the axis about which bending takes place

1088. The forces acting normally on the cross section of a bar shown in the given figure introduce_____________?
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A. Shear stress

B. Tensile stress

C. None of these

D. Compressive stress

1089. The maximum B.M. due to an isolated load in a three hinged parabolic arch, (span l and rise h) having one of its hinges at the crown, occurs on either side of the crown at a distance_______________?
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A. l

B. h/4

C. l/4

D. l

1090. An open cubical tank of 2 m side is filled with water. If the tank is rotated with an acceleration such that half of the water spills out, then the acceleration is equal to_______________?
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A. g/2

B. g

C. g/3

D. 2g/3

1091. Shear strain energy theory for the failure of a material at elastic limit, is due to_________________?
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A. Rankine

B. Guest or Trecas

C. Von Mises

D. St. Venant

1092. Maximum principal stress theory for the failure of a material at elastic point, is known________________?
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A. St. Venants theory

B. Rankines theory

C. Guests or Trecas theory

D. Von Mises theory

1093. Y are the bending moment, moment of inertia, radius of curvature, modulus of If M, I, R, E, F, and elasticity stress and the depth of the neutral axis at section, then________________?
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A. M/I = E/R = Y/F

B. M/I = E/R = E/Y

C. I/M = R/E = F/Y

D. M/I = R/E = F/Y

1094. The strain energy stored in a spring when subjected to greatest load without being permanently distorted, is called______________?
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A. Proof stress

B. Proof load

C. Proof resilience

D. Stiffness

1095. A masonry dam (density = 20,000 N/m3) 6 m high, one metre wide at the top and 4 m wide at the base, has vertical water face. The minimum stress at the base of the dam when the reservoir is full, will be_______________________?
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A. 75 N/m2

B. 750 N/m 2

C. 7500 N/m 2

D. 75000 N/m2

1096. The maximum magnitude of shear stress due to shear force F on a rectangular section of area A at the neutral axis, is__________________?
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A. F/2A

B. 2F/3A

C. F/A

D. 3F/2A
1097. The boundary layer thickness at a distance of l m from the leading edge of a flat plate, kept at zero angle of incidence to the flow direction, is O.l cm. The velocity outside the boundary layer is 25 ml sec. The boundary layer thickness at a distance of 4 m is__________________?
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A. 0.40 cm

B. 0.10 cm

C. 0.20 cm

D. 0.05 cm

1098. A short column (30 cm 20 cm) carries a load P 1 at 4 cm on one side and another load P2at 8 cm on the other side along a principal section parallel to longer dimension. If the extreme intensity on either side is same, the ratio of P1 to P2 will be_________________?
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A. 2-Mar

B. 3-Feb

C. 8/5

D. 8-May

1099. Coefficient of velocity of venturimeter_________________?
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A. decreases with higher Reynolds number

B. is equal to the coefficient of discharge of venturimeter

C. none of the above

D. is independent of Reynolds number

1100. In the truss shown in given figure the force in member DC is________________?
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A. 100 t compressive

B. Zero

C. Indeterminate

D. 100 t tensile