10 Civil Engineering Quiz | TOS MCQ #mcq.cetjob.com

10 Civil Engineering Quiz | TOS MCQ

1 >>Pick up the correct statement from the following:
 ?

• (A) For I sections, the shear centre coincides with the centroid of the cross section of the beam
• (B) For channels, the shear centre does not concide its centroid
• (C) Bending loads should pass through the shear centre to avoid twisting
• (D) all

2 >>The assumption in the theory of bending of beams, is :
 ?

• (A) each layer is independent to expand or to contract
• (B) material is isotropic
• (C) Young's modulus is same in tension as well as in compression
• (D) all the above.

3 >>Stress may be defined as
 ?

• (A) force per unit area
• (B) force per unit volume
• (C) force per unit length
• (D) none of these.

4 >>In plastic analysis, the shape factor for a triangular section, is
 ?

• (A) 1.34
• (B) 2.5
• (C) 2.34
• (D) 1.5

5 >>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
 ?

• (A) 2 : 1 1/2 : 1
• (B) 1 : 1 1/2 : 2
• (C) 0.04
• (D) none of these.

6 >>The point of contraflexure is the point where
 ?

• (A) S.F. is zero.
• (B) B.M. is minimum
• (C) B.M. changes sign
• (D) B.M. is maximum

7 >>If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following:
 ?

• (A) Q = S x F
• (B) Q = S + F
• (C) Q = S - F
• (D) Q = F - S

8 >>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 joist will be,
 ?

• (A) 10m
• (B) 12m
• (C) 16m
• (D) 14m

9 >>Shear strain energy theory for the failure of a material at elastic limit, is due to
 ?

• (A) Haig
• (B) St. Venant
• (C) Von Mises.
• (D) Guest or Trecas

10 >>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’. Distances AD, DD’ and AD’ when measured were 4 cm, 3 cm and 5 cm respectively. The angle between the reactions at A and B is
 ?

• (A) 120°
• (B) 30°
• (C) 60°
• (D) 90°

11 >>Total strain energy theory for the failure of a material at elastic limit, is known
 ?

• (A) St. Venant's theory
• (B) Guest's or Trecas' theory
• (C) Rankine's theory
• (D) Haig's theory

12 >>Principal planes are subjected to
 ?

• (A) normal stresses as well as tangential stresses
• (B) tangential stresses only
• (C) normal stresses only
• (D) none of these.

13 >>The normal component of a force inclined through θ° is obtained by multiplying the force by
 ?

• (A) tan θ
• (B) sin θ
• (C) sin θ cos θ
• (D) cos θ

14 >>The shape factor of standard rolled beam section varies from
 ?

• (A) 1.20 to 1.30
• (B) 1.40 to 1.50
• (C) 1.10 to 1.20
• (D) 1.30 to 1.40

15 >>A material is said to be perfectly elastic if
 ?

• (A) it regains its original shape on removal of the load
• (B) it does not regain its original shape at all
• (C) It regains its original shape partially on removal of the load
• (D) none of these.

16 >>A truss containing j joints and m members, will be a simple truss if
 ?

• (A) j = 2m - 3
• (B) m = 2j - 3
• (C) j = 3m - 2
• (D) m = 3j - 2

17 >>In plastic analysis, the shape factor for rectangular section, is
 ?

• (A) 1.7
• (B) 1.4
• (C) 1.5
• (D) 1.6

18 >>Pick up the correct statement from the following:
 ?

• (A) The ratio of plastic moment to the yield moment, is called shape factor
• (B) In a fully plastic stage of the beam, the neutral axis divides the section in two sections of equal area
• (C) In a loaded beam, the moment at which the entire section of the beam becomes fully plastic, is called plastic moment
• (D) all

19 >>In plastic analysis, the shape factor for a circular section, is
 ?

• (A) 1.6
• (B) 1.7
• (C) 1.5
• (D) 1.8

20 >>Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as
 ?

• (A) Determinate beams
• (B) Indeterminate beams
• (C) Composite beams.
• (D) Compound beams

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