civil engineering MCQs – Page 55

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 Review each marked answer and report any item that may be outdated or unclear.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

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______________?
0

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_______________?
0

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_______________?
0

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_________________?
0

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________________?
0

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__________________?
0

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

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