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Home » Engineering » Civil Engineering » Aptitude Test - 12
1. The assumption in the theory of bending of beams, is :
A. material is homogeneous
B. material is isotropic
C. Young's modulus is same in tension as well as in compression
D. material is homogeneous
2.The shape factor of standard rolled beam section varies from
A. 1.10 to 1.20
B. 1.20 to 1.30
C. 1.30 to 1.40
D. 1.10 to 1.20
3. Shear strain energy theory for the failure of a material at elastic limit, is due to
A. Rankine
B. Guest or Trecas
C. St. Venant
D. Rankine
4. The point of contraflexure is the point where
A. B.M. changes sign
B. B.M. changes sign
C. B.M. is minimum
D. B.M. changes sign
5.The normal component of a force inclined through θ° is obtained by multiplying the force by
A. sin θ
B. cos θ
C. tan θ
D. sin θ
6. Stress may be defined as
A. Strain is eqforce per unit lengthual to
B. force per unit volume
C. force per unit area
D. Strain is eqforce per unit lengthual to
7.Total strain energy theory for the failure of a material at elastic limit, is known
A. Guest's or Trecas' theory
B. St. Venant's theory
C. Rankine's theory
D. Guest's or Trecas' theory
8. Stress may be expressed in Newtons
A. per millimetre square (N/mm2)
B. per centimetre square (N/cm2)
C. per metre square (N/m2)
D. per millimetre square (N/mm2)
9.Principal planes are subjected to
A. normal stresses only
B. tangential stresses only
C. normal stresses as well as tangential stresses
D. normal stresses only
10. In plastic analysis, the shape factor for a circular section, is
A. 1.5
B. 1.6
C. 1.7
D. 1.5
11. A rolled steel joist is simply supported at its ends and carries a uniformly distributed load which causes a maximum deflection of 10 mm and slope at the ends of 0.002 radian. The length of the joi
A. 10 m
B. 12 m
C. 14 m
D. 10 m
12. A material is said to be perfectly elastic if
A. it regains its original shape on removal of the load
B. It regains its original shape partially on removal of the load
C. it does not regain its original shape at all
D. it regains its original shape on removal of the load
13.Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as
A. Compound beams
B. Indeterminate beams
C. Determinate beams
D. Compound beams
14.Pick up the correct statement from the following:
A. In a loaded beam, the moment at which the first yield occurs is called yield moment
B. In a loaded beam, the moment at which the entire section of the beam becomes fully plastic, is called plastic moment
C. In a fully plastic stage of the beam, the neutral axis divides the section in two sections of equal area
D. In a loaded beam, the moment at which the first yield occurs is called yield moment
15. The tangential component of stress on an plane inclined θ° to the direction of the force, may be obtained by multiplying the normal stress by
A. sin θ
B. cos θ
C. tan θ
D. sin θ
16. 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
A. 1 : 1 1/2 : 2
B. 2 : 1 1/2 : 1
C. 1 : 1 : 2
D. 1 : 1 1/2 : 2
17. If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following
A. Q = S + F
B. Q = S - F
C. Q = F - S
D. Q = S + F
18. In plastic analysis, the shape factor for a triangular section, is
A. 1.5
B. 1.34
C. 2.34
D. 1.5
19. Pick up the correct statement from the following:
A. The point of intersection of the bending axis with the cross section of the beam, is called shear centre
B. For I sections, the shear centre coincides with the centroid of the cross section of the beam
C. For channels, the shear centre does not concide its centroid
D. The point of intersection of the bending axis with the cross section of the beam, is called shear centre
20. For determining the support reactions at A and B of a three hinged arch, points B and C are joined and produced to intersect the load line at D and a line parallel to the load line through A at D'. D
A. 30°
B. 45°
C. 60°
D. 30°
21.Pick up the incorrect statement from the following : The torsional resistance of a shaft is directly proportional to
A. modulus of rigidity
B. angle of twist
C. reciprocal of the length of the shaft
D. modulus of rigidity
22.Which of the following has more fire resisting characteristics?
A. Marble
B. Lime stone
C. Compact sand stone
D. Marble
23.The rocks which are formed due to cooling of magma at a considerable depth from earth's surface are called
A. Plutonic rocks
B. Hypabyssal rocks
C. Volcanic rocks
D. Plutonic rocks
24.Plywood has the advantage of
A. Greater tensile strength in longer direction
B. Greater tensile strength in shorter direction
C. Same tensile strength in all directions
D. Greater tensile strength in longer direction
25. Due to attack of dry rot, the timber
A. Cracks
B. Shrinks
C. Reduces to powder
D. Cracks
26. Excess of alumina in brick earth makes the brick
A. Impermeable
B. Brittle and weak
C. To lose cohesion
D. Impermeable
27. Pick up the correct statement from the following:
A. In stone arches, the stones are placed with their natural beds radial
B. In cornices, the stones are placed with their natural beds as vertical
C. In stone walls, the stones are placed with their natural beds as horizontal
D. In stone arches, the stones are placed with their natural beds radial
28. The constituent of cement which is responsible for all the undesirable properties of cement is
A. Di-calcium silicate
B. Tri-calcium silicate
C. Tri-calcium aluminate
D. Di-calcium silicate
29. Inner part of a timber log surrounding the pitch, is called
A. Sapwood
B. Cambium layer
C. Heart wood
D. Sapwood
30.For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of
A. 1 : 2
B. 1 : 3
C. 1 : 4
D. 1 : 2
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